cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The shape of convection in 2D and 3D global simulations of stellar interiors
Creators: name: Dethero, M. -G.
name: Pratt, J.
name: Vlaykov, D. G.
name: Baraffe, I.
name: Guillet, T.
name: Goffrey, T.
name: Saux, A. Le
name: Morison, A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Theoretical descriptions of convective overshooting often rely on a one-dimensional parameterization of the flow called the filling factor for convection. Several definitions of the filling factor have been developed, based on: (1) the percentage of the volume, (2) the mass flux, and (3) the convective flux that moves through the boundary. We examine these definitions of the filling factor with the goal of establishing their ability to explain differences between 2D and 3D global simulations of stellar interiors that include fully compressible hydrodynamics and realistic microphysics for stars. We study pairs of identical two- and three-dimensional global simulations of stars produced with MUSIC, a fully compressible, time-implicit hydrodynamics code. We examine (1) a $3 M_\odot$ red giant star near the first dredge-up point, (2) a $1 M_\odot$ pre-main-sequence star with a large convection zone, (3) the current sun, and (4) a $20 M_\odot$ main-sequence star with a large convective core. Our calculations of the filling factor based on the volume percentage and the mass flux indicate asymmetrical convection near the surface for each star with an outer convection zone. However, near the convective boundary, convective flows achieve inward-outward symmetry; for 2D and 3D simulations, these filling factors are indistinguishable. A filling factor based on the convective flux is contaminated by boundary-layer-like flows, making theoretical interpretation difficult. We present two new alternatives to these standard definitions, which compare flows at two different radial points. The first is the penetration parameter of Anders et al. (2022). The second is a new statistic, the plume interaction parameter. We demonstrate that both of these parameters capture systematic differences between 2D and 3D simulations around the convective boundary.
description: 15 pages, 16 figures
Apseudomorpha Sieg 1980
Creators: name: Morales-Núñez, Andrés G.
name: Heard, Richard W.
name: Bird, Graham J.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Tanaidacea
Metapseudidae
Apseudomorpha

description: Suborder Apseudomorpha Sieg, 1980
Superfamily Apseudoidea Leach, 1814
description: Published as part of Morales-Núñez, Andrés G., Heard, Richard W. & Bird, Graham J., 2019, Two new apseudomorphan species (Crustacea: Tanaidacea: Metapseudidae) from Mo'orea Island (Society Islands, French Polynesia) with taxonomic keys, pp. 213-247 in Zootaxa 4564 (1) on page 214, DOI: 10.11646/zootaxa.4564.1.8, http://zenodo.org/record/2588858
Exploring the time variability of the Solar Wind using LOFAR pulsar data
Creators: name: Susarla, S. C.
name: Chalumeau, A.
name: Tiburzi, C.
name: Keane, E. F.
name: Verbiest, J. P. W.
name: Hazboun, J. S.
name: Krishnakumar, M. A.
name: Iraci, F.
name: Shaifullah, G. M.
name: Golden, A.
name: Nielsen, A. S. Bak
name: Donner, J.
name: Grießmeier, J. M.
name: Keith, M. J.
name: Osłowski, S.
name: Porayko, N. K.
name: Serylak, M.
name: Anderson, J. M.
name: Brüggen, M.
name: Ciardi, B.
name: Dettmar, R. J.
name: Hoeft, M.
name: Künsemöller, J.
name: Schwarz, D.
name: Vocks, C.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: High-precision pulsar timing is highly dependent on precise and accurate modeling of any effects that impact the data. It was shown that commonly used Solar Wind models do not accurately account for variability in the amplitude of the Solar wind on both short and long time scales. In this study, we test and validate a new, cutting-edge Solar wind modeling method included in the \texttt{enterprise} software suite through extended simulations, and we apply it to investigate temporal variability in LOFAR data. Our model testing scheme in itself provides an invaluable asset for pulsar timing array (PTA) experiments. As improperly accounting for the solar wind signature in pulsar data can induce false-positive signals, it is of fundamental importance to include in any such investigations. We employ a Bayesian approach utilizing a continuously varying Gaussian process to model the solar wind referred to as Solar Wind Gaussian Process (SWGP). We conduct noise analysis on eight pulsars from the LOFAR dataset with most pulsars having a timespan of $\sim 11$ years encompassing one full solar activity cycle. Our analysis reveals a strong correlation between the electron density at 1 AU and the ecliptic latitude (ELAT) of the pulsar. Pulsars with $|ELAT|< 3^{\circ}$ exhibit significantly higher average electron densities. We observe distinct temporal patterns in electron densities in different pulsars. In particular, pulsars within $|ELAT|< 3^{\circ}$ exhibit similar temporal variations, while the electron densities of those outside this range correlate with the solar activity cycle. The continuous variability in electron density offered in this model represents a substantial improvement over previous models, which assume a single value for piece-wise bins of time. This advancement holds promise for solar wind modeling in future International Pulsar Timing Array data combinations.
description: Accepted in Section 9. Sun and the Heliosphere, Astronomy and Astrophysics
Megalestes heros Needham 1930
Creators: name: Yu, Xin
name: Xue, Junli
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Synlestidae
Megalestes
Megalestes heros

description: Megalestes heros Needham, 1930
(Fig. 3e; 4e; 5c, p; 6g)
Megalestes heros Needham, 1930: 229–230 [Fujian, Sichuan]; Asahina 1985b: 11, 13, figs. 32–33 [Guadun, Fujian]. Megalestes suensoni Asahina, 1956: 213–216, figs. 12–14 [Tien-Mu-Shan, Chekiang]; Chao 1965, proposed a junior synonym.
This is a large, endemic Chinese species mainly occurring in Fujian and Zhejiang. Needham (1930) did not provide any figures for this species. Asahina (1956) described M. suensoni on base of a female specimen from Tianmushan, Zhejiang. After carefully studying another female specimen collected from the type locality of M. suensoni Chao (1965) believed it was a junior synonym of M. heros, which was finally accepted by Asahina (1985b). Chao (1965) also doubted one of the type specimen of M. heros (the teneral male from Sichuan) was true of this species. We have explored Sichuan for many years and have never found M. heros, but the similar-sized species M. omeiensis is present. We agree with Chao (1965) to believe that Needham confused these two species in his original study.
description: Published as part of Yu, Xin & Xue, Junli, 2020, A review of the damselfly genus Megalestes Selys, 1862 (Insecta: Odonata Zygoptera: Synlestidae) using integrative taxonomic methods, pp. 245-270 in Zootaxa 4851 (2) on page 260, DOI: 10.11646/zootaxa.4851.2.2, http://zenodo.org/record/4407479
Apseudomorpha Miller 1940
Creators: name: Morales-Núñez, Andrés G.
name: Heard, Richard W.
name: Bird, Graham J.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Tanaidacea
Metapseudidae
Apseudomorpha

description: Genus Apseudomorpha Miller, 1940
Type-species. Apseudomorpha oahuensis Miller, 1940.
Species. Apseudomorpha albida (Shiino, 1951); A. avicularia (Barnard, 1914); A. drummi sp. nov.; A. fontainei Guţu, 1987; A. glebosa (Menzies, 1953); A. hirsuta (Stebbing, 1910); A. magdalenensis (Menzies, 1953); A. martinicana Guţu, 2009; A. negoescuae Guţu, 2007; A. oahuensis Miller, 1940; A. ortizi Guţu, 2006; A. timaruvia (Chilton, 1882); A. veleronis (Menzies, 1953); A. vestafricana Guţu, 2006.
Diagnosis. (modified from Guţu 2006). Body subcylindrical. Carapace usually with short and denticulate rostrum; ocular lobes well-developed containing visual elements. Pereonites wider than long. Pleon distinctly narrower than pereon, with five unfused, short, pleonites; pleotelson short, subcylindrical. Antennule biramous, usually shorter than cephalothorax; peduncle having one or more spiniform apophyses on inner margin of article-1; article-2 longer than article-3. Antenna with small squama. Mandible having thick palp with articles. Maxillule with palp having two articles. Cheliped and pereopod-1 lacking exopod. Cheliped sexually dimorphic; male strongly developed and subequal in size, basis appearing sub-ovoid, carpus stout and short, propodus and dactylus forming large chela; female having cheliped distinctly smaller and less robust than male, carpus narrow. Pereopod-1 subcylindrical, slightly large and generally similar to pereopods 2–3. Pleopods absent or reduced in size, when present (up to five pairs), uniramous or biramous. Uropods with short biramous rami
Remarks. Within the subfamily Metapseudinae, Apseudomorpha can be distinguished from the superficially similar genera Julmarichardia Guţu, 1989, Pseudoapseudomorpha Guţu, 1991, and Plectrocopus Guţu, 2006) by the absence of an exopod on the cheliped.
description: Published as part of Morales-Núñez, Andrés G., Heard, Richard W. & Bird, Graham J., 2019, Two new apseudomorphan species (Crustacea: Tanaidacea: Metapseudidae) from Mo'orea Island (Society Islands, French Polynesia) with taxonomic keys, pp. 213-247 in Zootaxa 4564 (1) on pages 214-215, DOI: 10.11646/zootaxa.4564.1.8, http://zenodo.org/record/2588858
Nanocavities for Molecular Optomechanics: their fundamental description and applications
Creators: name: Roelli, Philippe
name: Hu, Huatian
name: Verhagen, Ewold
name: Reich, Stephanie
name: Galland, Christophe
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Vibrational Raman scattering -- a process where light exchanges energy with a molecular vibration through inelastic scattering -- is most fundamentally described in a quantum framework where both light and vibration are quantized. When the Raman scatterer is embedded inside a plasmonic nanocavity, as in some sufficiently controlled implementations of surface-enhanced Raman scattering (SERS), the coupled system realizes an optomechanical cavity, where coherent and parametrically amplified light-vibration interaction becomes a resource for vibrational state engineering and nanoscale nonlinear optics. The purpose of this Perspective is to clarify the connection between the languages and parameters used in the fields of molecular cavity optomechanics (McOM) vs. its conventional, `macroscopic' counterpart, and to summarize the main results achieved so far in McOM and the most pressing experimental and theoretical challenges. We aim to make the theoretical framework of molecular cavity optomechanics practically usable for the SERS and nanoplasmonics community at large. While quality factors ($Q$'s) and mode volumes ($V$'s) essentially describe the performance of a nanocavity in enhancing light-matter interaction, we point to the light-cavity coupling efficiencies ($η$'s) and optomechanical cooperativities ($\mathcal{C}$'s) as the key parameters for molecular optomechanics. As an illustration of the significance of these quantities, we investigate the feasibility of observing optomechanically induced transparency with a molecular vibration -- a measurement that would allow for a direct estimate of the optomechanical cooperativity.
description: Includes an Appendix
Letheobia decorosa Buchholz & Peters
Creators: name: Wallach, Van
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Typhlopidae
Letheobia
Letheobia decorosa

description: Letheobia decorosa (Buchholz & Peters)
(Fig 3 B)
Cameroon gracile blind-snake
Typhlops (Ophthalmidion) decorosus Buchholz & Peters 1875, Mber. Königl. Akad. Wiss. Berlin 1875: 197. Type locality: Cameruns [= Cameroon], holotype ZMB 8322, collected by R. Buchholz.
Typhlops (Onychocephalus) buchholzi Peters 1881, S-Ber. Ges. Naturf. Freunde Berlin 1881(4): 71. Type locality: Mungo (West-Africa) [= Cameroon] (04°06’N, 09°32’E, elevation 45 m), holotype ZBM 8408.
Typhlops decorosus – Boulenger, 1893: 38; Sternfeld 1908a: 403; Boulenger 1920: 271; Werner 1921: 312; Roux-Estève 1974: 73, Fig. 44, 1975: 444; Hahn 1980: 55; McDiarmid et al. 1999: 98.
Letheobia decorosa – Chirio & Ineich, 2006: 42.
Description. Snout rounded, prominent. Rostral broad, rounded posteriorly; frontal subhexagonal; supraocular transverse, its lateral apex between preocular and ocular; eye not visible; nasal suture arising from first labial; SIP X (N2, P, O, O); MSR 24; MD 460–542; vertebrae 285–320; middorsal/vertebrae ratio 1.52–1.69; LD ratio 53–66. Dark pigmentation covers all except 3–5 midventral scale rows.
Size. Largest specimen (MNHN 1966.1248 – Ngaoundéré, Cameroon) 505 mm in total length.
Habitat. Forest-savanna mosaic.
Distribution. Central Cameroon and western Central African Republic, 45–500 m (Fig. 11).
Localities. CAMEROON. No locality ZMB 8322; Bafutu District BMNH 50.1.1.31; Bota BMNH 1967.106; Mungo ZMN 8408; Ngaoundéré MNHN 1966.1248-51. CENTRAL AFRICAN REPUBLIC. Bania MNHN 1931.80.
description: Published as part of Wallach, Van, 2007, A review of East and Central African species of Letheobia Cope, revived from the synonymy of Rhinotyphlops Fitzinger, with descriptions of five new species (Serpentes: Typhlopidae), pp. 31-68 in Zootaxa 1515 on page 44, DOI: 10.5281/zenodo.177278
Quantum signatures of bistability and limit cycle in Kerr-modified cavity magnomechanics
Creators: name: Gupta, Pooja Kumari
name: Chakraborty, Subhadeep
name: Kalita, Sampreet
name: Sarma, Amarendra K.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study a Kerr-modified cavity magnomechanical system with a focus on its bistable regime. We identify a distinct parametric condition under which bistability appears, featuring two stable branches and one unstable branch in the middle. Interestingly, our study reveals a unique transition where the upper branch loses its stability under a sufficiently strong drive, giving rise to limit cycle oscillation. Consequently, we report a rich phase diagram consisting of both bistable and periodic solutions and study quantum correlations around them. While in the bistable regime, we find the entanglement reaching different steady state value, in the unstable regime, entanglement oscillates in time. This study is especially important in understanding quantum entanglement at different stable and unstable points arising in a Kerr-modified cavity magnomechanical system.
Megalestes irma Fraser 1926
Creators: name: Yu, Xin
name: Xue, Junli
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Synlestidae
Megalestes
Megalestes irma

description: Megalestes irma Fraser, 1926
(Figs. 3b; 4b; 5f, s; 6l)
Megalestes irma Fraser, 1926: 32–33 [Gandtor, Sikkim]; Asahina 1985b: 5–8, figs. 11–18 [Sikkim; Nepal].
The first author examined the type specimens (2 m #m#, 1 f# Gandtor Sikhim, 5000–6000 ft, 1924-V-29, Fraser leg.) of this species and recorded the photos at BMNH in July 2017. This is a large species with paraprocts appearing unique (Figs. 4b, 6l) in having the basal tooth bent forward, which coincides with the description in Fraser (1926). The ligula resembles that of M. australis but without the terminal lateral lobes (Fig. 5f, s). The photos of M. irma in Gyeltshen et al. (2017) were actually of M. micans, which can be easily identified by the shape of the paraprocts and the basal tooth of the cerci (cf. Fig. 4 e–f, in Gyeltshen et al., 2017, for detailed discussion please see “ Megalestes micans Needham, 1930 ”). This species is known only from Sikkim and Nepal.
description: Published as part of Yu, Xin & Xue, Junli, 2020, A review of the damselfly genus Megalestes Selys, 1862 (Insecta: Odonata Zygoptera: Synlestidae) using integrative taxonomic methods, pp. 245-270 in Zootaxa 4851 (2) on page 261, DOI: 10.11646/zootaxa.4851.2.2, http://zenodo.org/record/4407479
ESO 137-001 -- a jellyfish galaxy model
Creators: name: Vollmer, B.
name: Sun, M.
name: Jachym, P.
name: Fossati, M.
name: Boselli, A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Ram pressure stripping of the spiral galaxy ESO 137-001 within the highly dynamical intracluster medium (ICM) of the Norma cluster lead to spectacular extraplanar CO, optical, H$α$, UV, and X-ray emission. The Halpha and X-ray tails extend up to 80 kpc from the galactic disk. Dynamical simulations of the ram pressure stripping event are presented to investigate the physics of the stripped gas and its ability to from stars, to predict HI maps, and to constrain the orbit of ESO 137-001 within the Norma cluster. Special care was taken for the stripping of the diffuse gas. In a new approach, we analytically estimate the mixing between the intracluster and interstellar media. Different temporal ram pressure profiles and the ICM-ISM mixing rate were tested. Three preferred models show most of the observed multi-wavelength characteristic of ESO 137-001. Our highest-ranked model best reproduces the CO emission distribution, velocity for distances <~ 20 kpc from the galactic disk, and the available NUV observations. The second and third preferred models reproduce best the available X-ray and Halpha observations of the gas tail including the Halpha velocity field. The angle between the direction of the galaxy's motion and the galactic disk is between 60 and 75 degrees. Ram pressure stripping thus occurs more face-on. The existence of a two-tail structures is a common feature in our models. It is due to the combined action of ram pressure and rotation together with the projection of the galaxy on the sky. Our modelling of the Halpha emission caused by ionization through thermal conduction is consistent with observations. HI emission distributions for the different models are predicted. Based on the 3D velocity vector derived from our dynamical model we derive a galaxy orbit, which is close to unbound.
description: accepted for publication in A&A. Movies for models A, B, and C can be found here: https://seafile.unistra.fr/f/d06f272d2840479aba7a/
The fast rise of the unusual Type IIL/IIb SN 2018ivc
Creators: name: Reguitti, A.
name: Dastidar, R.
name: Pignata, G.
name: Maeda, K.
name: Moriya, T. J.
name: Kuncarayakti, H.
name: Rodríguez, Ó.
name: Bersten, M.
name: Anderson, J. P.
name: Charalampopoulos, P.
name: Fraser, M.
name: Gromadzki, M.
name: Young, D. R.
name: Benetti, S.
name: Cai, Y. -Z.
name: Elias-Rosa, N.
name: Lundqvist, P.
name: Carini, R.
name: Cosentino, S. P.
name: Galbany, L.
name: Gonzalez-Bañuelos, M.
name: Gutiérrez, C. P.
name: Kopsacheili, M.
name: G., J. A. Pineda
name: Ramirez, M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an analysis of the photometric and spectroscopic dataset of the Type II supernova (SN) 2018ivc in the nearby (10 Mpc) galaxy Messier 77. Thanks to the high cadence of the CHASE survey, we observed the SN rising very rapidly by nearly three magnitudes in five hours (or 18 mag d$^{-1}$). The $r$-band light curve presents four distinct phases: the maximum light is reached in just one day, then a first, rapid linear decline precedes a short-duration plateau. Finally, a long, slower linear decline lasted for one year. Following a radio rebrightening, we detected SN 2018ivc four years after the explosion. The early spectra show a blue, nearly featureless continuum, but the spectra evolve rapidly: after about 10 days a prominent H$α$ line starts to emerge, with a peculiar profile, but the spectra are heavily contaminated by emission lines from the host galaxy. He I lines, namely $λλ$5876,7065, are also strong. On top of the former, a strong absorption from the Na I doublet is visible, indicative of a non-negligible internal reddening. From its equivalent width, we derive a lower limit on the host reddening of $A_V\simeq1.5$ mag, while from the Balmer decrement and a match of the $B-V$ colour curve of SN 2018ivc to that of the comparison objects, a host reddening of $A_V\simeq3.0$ mag is obtained. The spectra are similar to those of SNe II, but with strong He lines. Given the peculiar light curve and spectral features, we suggest SN 2018ivc could be a transitional object between the Type IIL and Type IIb SNe classes. In addition, we found signs of interaction with circumstellar medium in the light curve, making SN 2018ivc also an interacting event. Finally, we modelled the early multi-band light curves and photospheric velocity of SN 2018ivc to estimate the explosion and CSM physical parameters.
description: 19 pages, 22 figures, 3 tables, 3 appendices, accepted for publication on A&A
Letheobia jubana Wallach, 2007, sp. nov.
Creators: name: Wallach, Van
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Typhlopidae
Letheobia
Letheobia jubana

description: Letheobia jubana sp. nov.
(Fig 3 C)
Juba gracile blind-snake
Typhlops lineolatus lineolatus – (not Jan) Hoevers & Johnson 1982: 182; Lambert 1985: 66. Typhlops lineolatus— (not Jan) Lanza 1983: 219, 1990: 430.
Holotype. CAS 151201, a female from vicinity of Mareri, Juba Sugar Project, west bank of Juba River, Middle Juba region, southern Somalia (00°30’N, 42°46’E, elevation ca. 20 m), collected by P. M. Johnson, 25 January 1979, in a termite hill.
Paratypes. CAS 225258-61, MZUF 27179-84, with the same locality data as the holotype but collected by L. G. Hoevers and P. M. Johnson, 1977–1981, during bush clearing by bulldozers.
Diagnosis. Apparently most closely related to Letheobia decorosa of Cameroon, but differing in its rostral, which tapers posteriorly to a blunt point and has an obtusely angular keratinized cutting edge (rostral rounded posteriorly and snout rounded in L. decorosa); its frontal being smaller than a supraocular (larger in L. decorosa); and its lower middorsal count, 391–435 vs 460–542 in L. decorosa.
Description (paratype variations in parentheses). Snout with an obtusely angular keratinised horizontal edge. Rostral broad and saggitate, terminating in a blunt point; ventrally broad with parallel sides; frontal, supraoculars and interparietal subequal and transverse, supraocular with its lateral apex wedged between preocular and ocular; eye faintly visible beneath preocular; SIP X (N2, P, O, O); scale rows 26-24-22; MD 435 (391–430); L/D ratio 53 (44–57). Length 347 mm. Colouration – head yellow dorsally and laterally (largely brown in MZUF 27181), otherwise dorsum dark brown, each scale with a pale basal spot, larger laterally, ventrum immaculate.
Size. Largest specimen (CAS 225258 –– paratype) 510 mm in total length.
Habitat. The type series was bulldozed out of termitaria on levees of sandy loam on the west bank of the Juba River. The original vegetation consisted of tall riverine trees with undergrowth of shrubs and creepers. Distribution. Only known from the type locality (Fig. 11, inset top left).
description: Published as part of Wallach, Van, 2007, A review of East and Central African species of Letheobia Cope, revived from the synonymy of Rhinotyphlops Fitzinger, with descriptions of five new species (Serpentes: Typhlopidae), pp. 31-68 in Zootaxa 1515 on pages 44-45, DOI: 10.5281/zenodo.177278
Impact of solar wind turbulence on a planetary bow shock
Creators: name: Behar, E.
name: Pucci, F.
name: Wedlund, C. Simon
name: Henri, P.
name: Ballerini, G.
name: Preisser, L.
name: Califano, F.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Over the past decades, near-Earth spacecraft observations have provided insights into the physics of the bow shock, suggesting that solar wind intrinsic turbulence influences the bow shock dynamics. On the other hand, theoretical studies, based on global numerical simulations, have not yet investigated the global 3D interaction between a turbulent solar wind and a planetary magnetosphere. This paper addresses this gap for the first time by investigating the global dynamics of this interaction, providing new perspectives on the underlying physical processes. We examine how the turbulent nature of the solar wind influences the 3D structure and dynamics of magnetized planetary environments or magnetized Earth-like exoplanets, using the newly developed numerical code Menura. We use the hybrid PIC model Menura to conduct 3D simulations of the turbulent solar wind and its interaction with an Earth-like magnetized planet through global numerical simulations of the magnetosphere and its surroundings. We show that solar wind turbulence globally influences the shape and dynamics of the bow shock, the magnetosheath structures, and the ion foreshock dynamics. We show that a turbulent solar wind disrupts the coherence of foreshock fluctuations, induces large fluctuations on the quasi-perpendicular surface of the bow shock, facilitates the formation of bubble-like structures near the bow shock's nose, and modifies the properties of the magnetosheath region. None of these phenomena occur when comparing with the case in which the solar wind is laminar. The turbulent nature of the solar wind impacts the 3D shape and dynamics of the bow shock, magnetosheath, and ion foreshock region. This influence should be considered when studying solar wind-planet interactions in observations and simulations. We discuss the relevance of our findings for current and future missions launched into the heliosphere.
Distinguishing black holes with and without spontaneous scalarization in Einstein-scalar-Gauss-Bonnet theories via optical features
Creators: name: Wang, Xi-Jing
name: Meng, Yuan
name: Kuang, Xiao-Mei
name: Liao, Kai
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Spontaneous scalarization in Einstein-scalar-Gauss-Bonnet theory admits both vacuum-general relativity (GR) and scalarized hairy black holes as valid solutions, which provides a distinctive signature of new physics in strong gravity regime. In this paper, we shall examine the optical features of Gauss-Bonnet black holes with spontaneous scalarization, which is governed by the coupling parameter $λ$. We find that the photon sphere, critical impact parameter and innermost stable circular orbit all decrease as the increasing of $λ$. Using observable data from Event Horizon Telescope, we establish the upper limit for $λ$. Then we construct the optical appearances of the scalarized black holes illuminated by various thin accretions. Our findings reveal that the scalarized black holes consistently exhibit smaller shadow sizes and reduced brightness compared to Schwarzschild black holes. Notably, in the case of thin spherical accretion, the shadow of the scalarized black hole is smaller, but the surrounding bright ring is more pronounced. Our results highlight the observable features of the scalarized black holes, providing a distinguishable probe from their counterpart in GR in strong gravity regime.
description: 18 pages, 10 figures, matching the version published in EPJC
Untangling Stellar Components of Galaxies: Evaluation of Dynamical Decomposition Methods in Simulated Galaxies with GalaxyChop
Creators: name: Cristiani, Valeria A.
name: Abadi, Mario G.
name: Taverna, Antonela
name: Cabral, Juan
name: Benelli, Federico
name: Sánchez, Bruno
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Galaxy formation is intrinsically connected to the distinct evolutionary processes of disk and spheroidal systems, which are the fundamental stellar components of galaxies. Understanding the mutual dynamical interplay and co-evolution of these components requires a detailed dynamical analysis to allow for a disentanglement between them. We introduce JEHistogram, a new method for the dynamical decomposition of simulated galaxies into disk and spheroidal stellar components, utilizing the angular momentum and energy of star particles. We evaluate its performance against five previously established methods using a sample of equilibrium galaxies with stellar masses in the range $10^{10} \leq M_\mathrm{gal}/M_\odot \leq 10^{12}$. Our assessment involves several metrics, including the completeness and purity of stellar particle classification, scale lengths, mass density profiles, velocity dispersion, and rotational velocity profiles. While all methods approximate the properties of the original components, such as mass fractions and density or velocity profiles, JEHistogram demonstrates a better accuracy, particularly in the inner regions of galaxies where component overlap complicates separation. Additionally, we apply JEHistogram to a Milky Way-like galaxy from the IllustrisTNG cosmological simulations, showcasing its capability to derive properties like size, mass, velocity, color, and age of dynamically defined disk and spheroidal components. All dynamical decomposition methods analyzed are publicly accessible through the Python package GalaxyChop.
description: 16 pages, 18 figures, accepted in A&A
Megalestes kurahashii Asahina 1985
Creators: name: Yu, Xin
name: Xue, Junli
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Synlestidae
Megalestes
Megalestes kurahashii

description: Megalestes kurahashii Asahina, 1985
(Figs. 3g; 4g; 5t; 6d)
Megalestes kurahashii Asahina, 1985a: 2–11 [Thailand]; Asahina 1985b: 12–13 [Assam, India].
This is the first formal record of this species from China. It is unique in that the shape of the paraproct apex is flat and broad, decorated with some strong setae giving the appearance of a brush. To date, this species has only been reported from India, Thailand, and Yunnan, China. However, it is quite possible that it may also occur in Myanmar and Vietnam.
description: Published as part of Yu, Xin & Xue, Junli, 2020, A review of the damselfly genus Megalestes Selys, 1862 (Insecta: Odonata Zygoptera: Synlestidae) using integrative taxonomic methods, pp. 245-270 in Zootaxa 4851 (2) on page 261, DOI: 10.11646/zootaxa.4851.2.2, http://zenodo.org/record/4407479
Letheobia pembana Wallach, 2007, sp. nov.
Creators: name: Wallach, Van
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Typhlopidae
Letheobia
Letheobia pembana

description: Letheobia pembana sp. nov.
Pemba gracile blind-snake
Typhlops pallidus – (not Cope) Boettger 1913: 351; Boulenger 1915b: 616 (part); Moreau & Pakenham 1941: 108 (part); Loveridge 1957: 244 (part).
Rhinotyphlops pallidus – (not Cope) Pakenham 1983: 21 (part); Spawls et al. 2002: 295 (part), 2006: 92 (part).
Holotype. SMF 16688, a male from Pemba Island, Tanzania (05°15’S, 39°50’E, elevation <100 m), collected by A. Voeltzkow in 1905.
Diagnosis. A member of the Letheobia pallida complex, but distinguished by its more numerous scale rows (26-24-24 vs 24-22-22) and lower number of middorsals (353 vs 376-487).
Description. Snout rounded, prominent. Rostral very broad, truncated posteriorly; frontal crescentic; supraocular transverse, its lateral apex between nasal and ocular, the latter separated from the lip by a large subocular; eye not visible; nasal suture arising from second labial; SIP X (N1, P, O, O); scale rows 26-24-24; MD 353; L/D ratio 53. Length 158 mm. Colourless.
Etymology. Named for Pemba Island, the type locality.
Habitat. Coastal mosaic, probably cultivation steppe.
Distribution. Endemic to Pemba Island, Tanzania (Fig. 10).
description: Published as part of Wallach, Van, 2007, A review of East and Central African species of Letheobia Cope, revived from the synonymy of Rhinotyphlops Fitzinger, with descriptions of five new species (Serpentes: Typhlopidae), pp. 31-68 in Zootaxa 1515 on page 45, DOI: 10.5281/zenodo.177278
Unveiling Key Factors in the Solar Eruptions Leading to the Solar Superstorm in 2024 May
Creators: name: Wang, Rui
name: Liu, Ying D.
name: Zhao, Xiaowei
name: Hu, Huidong
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: NOAA Active Region (AR) 13664/8 produced the most intense geomagnetic effects since the ``Halloween'' event of 2003. The resulting extreme solar storm is believed to be the consequence of multiple interacting coronal mass ejections (CMEs). Notably, this AR exhibites an exceptionally rapid magnetic flux emergence. The eruptions we are focusing on all occurred along collisional polarity inversion lines (PILs) through ``collisional shearing'' during a three-day period of extraordinarily high flux emergence ($\sim$10$^{21}$ Mx hr$^{-1}$). Our key findings reveal how photospheric magnetic configurations in eruption sources influence solar superstorm formation and geomagnetic responses, and link exceptionally strong flux emergence to sequential homologous eruptions: (1) We identified the source regions of seven halo CMEs, distributed primarily along two distinct PILs, suggesting the presence of two groups of homologous CMEs. (2) The variations in magnetic flux emergence rates at the source regions correlate with CME intensities, potentially explaining the two contrasting cases of complex ejecta observed at Earth. (3) Calculations of magnetic field gradients around CME source regions show strong correlations with eruptions, providing crucial insights into solar eruption mechanisms and enhancing future prediction capabilities.
description: 4 figures, accepted for publication in A&A
Cryptapseudes Bacescu 1976
Creators: name: Morales-Núñez, Andrés G.
name: Heard, Richard W.
name: Bird, Graham J.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Tanaidacea
Metapseudidae
Cryptapseudes

description: Genu s Cryptapseudes Băcescu, 1976
Type-species. Cryptapseudes sankarankuttyi Băcescu, 1976 Species. Cryptapseudes acutifrons Băcescu, 1976; C. leroyi David & Heard, 2015; C. mamua sp. nov.; C. romanae Guţu, 1991; C. sankarankuttyi Băcescu, 1976.
Diagnosis. “Body small, robust. Antennule having main flagellum with two to five articles; minor flagellum uniarticulate. Antenna with small squama. Maxilliped with palp article-2 having strongly developed, distolateral spiniform seta. Cheliped and pereopod-1 with exopods. Pereonites with long, strongly developed, stiff, dorsolateral setae. Pleonites compressed and completely fused with telson, strongly developed upturned, spiniform process dorsally; five pairs of reduced biramous pleopods present. Sexual dimorphism pronounced; adult males with massive chelipeds; chelipeds of female much smaller than those of male. Uropodal endopod with six or fewer articles, exopod small, uniarticulate” (David & Heard 2015).
Remarks. The subfamilial status of metapseudid genus Cryptapseudes remains unsettled. Based on the presence of (1) an antennal squama, (2) exopods on the chela and pereopod-1, (3) five pairs of pleopods, and (4) the abdomen and telson being completely fused dorsally, David & Heard (2015: p. 293) questioned the placement of this genus within the Synapseudinae Guţu, 1972, which, as then defined, shared none of these characters. Following the same reasoning, Heard et al. (2018: p. 7) removed Cryptapseudes from the Synapseudinae indicating that it shares more characters in common with the subfamilies Metapseudinae Lang, 1970 and Chondropodinae Guţu 2008. The systematic status of Cryptapseudes and other genera within the Metapseudidae is being reevaluated and revised by Piotr Jóźwiak (pers. comm. 2016).
It should be noted that David & Heard (2015: fig. 4D) inadvertently confused pereopod-4 of the female with that of the already described pereopod-3 (see their fig. 4C). Pereopod-4, which is morphologically similar to pereopods 5 and 6, is correctly indicated in their lateral views of the male and female (see their fig. 1A, C).
description: Published as part of Morales-Núñez, Andrés G., Heard, Richard W. & Bird, Graham J., 2019, Two new apseudomorphan species (Crustacea: Tanaidacea: Metapseudidae) from Mo'orea Island (Society Islands, French Polynesia) with taxonomic keys, pp. 213-247 in Zootaxa 4564 (1) on page 230, DOI: 10.11646/zootaxa.4564.1.8, http://zenodo.org/record/2588858
Megalestes lieftincki Lahiri 1979
Creators: name: Yu, Xin
name: Xue, Junli
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Synlestidae
Megalestes
Megalestes lieftincki

description: Megalestes lieftincki Lahiri, 1979
Megalestes lieftincki Lahiri, 1979: 122–125, figs. 1–4 [Tahlia, Arunachal Pradesh, India]; Asahina 1985b: 11–12, figs. 27–31 [Salari, Kameng, Assam, India].
We did not examine any specimens of this species, since they are difficult to access. According to the figures in the original description in Lahiri (1979), this species resembles M. heros. Asahina (1985b) put character figures of M. lieftincki together with M. heros but provided no figure of the ligula for heros. Asahina (1985b) did not provide a key, and some emphasized characters, such as “disk-shaped” basal tooth of cerci with “bush of hairs” on the apex, actually exist in both species. Only one distinct character separates M. lieftincki from M. heros if the drawings in Lahiri (1979) and Asahina (1985b) are credible, that is, the dorsal side of S10 is flat (rare in Megalestes) in M. lieftincki but swelling in M. heros. M egalestes heros is limited to the Fujian and Zhejiang provinces of China which is about 2000 km away from the type locality of M. lieftincki. This makes it unlikely that M. lieftincki is conspecific with M. heros for which reason we regard it to be a good species. Nonetheless a more detailed description, if possible combined with genetic data, would be valuable.
description: Published as part of Yu, Xin & Xue, Junli, 2020, A review of the damselfly genus Megalestes Selys, 1862 (Insecta: Odonata Zygoptera: Synlestidae) using integrative taxonomic methods, pp. 245-270 in Zootaxa 4851 (2) on page 261, DOI: 10.11646/zootaxa.4851.2.2, http://zenodo.org/record/4407479
TODDLERS: A New UV to Millimeter Emission Library for Star-Forming Regions. II. Star Formation Rate Indicators Using Auriga Zoom Simulations
Creators: name: Kapoor, Anand Utsav
name: Baes, Maarten
name: van der Wel, Arjen
name: Gebek, Andrea
name: Camps, Peter
name: Smith, Aaron
name: Boquien, Médéric
name: Andreadis, Nick
name: Vicens, Sebastien
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Current galaxy formation simulations often approximate star-formation, necessitating models of star-forming regions to produce observables. In the first paper of the series, we introduced TODDLERS, a time-resolved model of UV-mm emission from star-forming regions implemented in the radiative transfer code SKIRT. This work uses SKIRT-TODDLERS to produce synthetic observations, demonstrating its potential through observables related to star-formation and comparing results with existing models in SKIRT. We calculate broadband and line emission maps for 30 Milky Way-like galaxies from the Auriga simulation at z=0. Analyzing FUV and IR data, we calculate kpc-resolved IR correction factors (k_IR), quantifying the ratio of FUV luminosity absorbed by dust to reprocessed IR luminosity. We use IR maps to calculate kpc-scale MIR (8 micron / 24 micron) and FIR (70 micron / 500 micron) colors. H alpha and H beta line maps are used to study the Balmer decrement and dust correction. We also verify the fidelity of our model FIR fine structure lines as SFR indicators. We find that the Auriga integrated UV-mm SEDs show higher FUV/NUV attenuation and lower 24 micron emission when using TODDLERS instead of the existing models in SKIRT, alleviating tensions with observations. The light-weighted mean k_IR increases with aperture and inclination, while its correlation with kpc-resolved sSFR is weaker than literature values. Kpc-scale MIR-FIR colors agree excellently with local observations, with anti-correlation degree varying by galaxy morphology. The Balmer decrement effectively corrects for dust, with attenuation law varying with dust amount. H alpha emission attenuation levels are comparable to high-density regions in state-of-the-art simulations. FIR fine-structure line emission-based luminosity-SFR relations align with global observations, [CII] showing best agreement.
description: 22 pages, 20 figures. Accepted for publication in Astronomy and Astrophysics on October 21, 2024
Letheobia pallida Cope
Creators: name: Wallach, Van
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Typhlopidae
Letheobia
Letheobia pallida

description: Letheobia pallida Cope
(Fig 4 A)
Pallid gracile blind-snake
Letheobia pallida Cope 1869, Proc. Acad. Nat. Sci. Philadelphia 20: 322. Type locality: Zanzibar [Island, Tanzania], collected by C. Cooke, lectotype MCZ 5723 (ex-Essex Inst. 504), designated herein; Barbour & Loveridge 1929: 295; Malnate 1971: 370.
Typhlops pallidus – Boulenger 1893: 54, 1915b: 616 (part); Tornier 1896: 66; Sternfeld 1908: 242, 1910: 12; Loveridge 1916: 82, 1924: 4 (part), 1936: 227; Werner 1921: 330; Moreau & Pakenham 1941: 108 (part); Loveridge 1957: 244 (part); Pitman 1974: 64 (part); Broadley & Howell 1991: 21 (part).
Rhinotyphlops pallidus – Roux-Estève 1974: 217, Fig. 151, 1975: 445 (part); Hahn 1980: 32; Meirte 1992: 20, Fig. 35; Broadley & Broadley 1996: 45 (part); McDiarmid et al. 1999: 83 (part); Spawls et al. 2002: 295 (part); Spawls et al. 2006: 92 (part).
Description. Snout rounded, prominent. Rostral very broad, truncated posteriorly; frontal crescentic; supraocular transverse, its lateral apex between nasal and ocular, the latter separated from the lip by a large subocular; eye not visible; nasal suture arising from second labial; SIP X (N1, P, O, O); scale rows 24-22-22; MD 418– 433; vertebrae 274; MD/V ratio 1.54–1.58; L/D ratio 53–62. Colourless.
Size. Largest specimen (MCZ 5723 – Zanzibar Island) 192 mm in total length.
Habitat. Coastal mosaic. One of the types was taken from a well (Cope 1869).
Distribution. Endemic to Zanzibar Island, Tanzania (Fig 10).
Localities. Zanzibar Island (Pakenham, 1983) ANSP 3300 (paralectotype); BMNH 68.2.29.135, 1950.1.5.34; MCZ 5723 (lectotype).
Comment. C. Cooke collected the two syntypes from Zanzibar, East Africa: ANSP 3300 (ex-Essex Inst. no. 411) & MCZ 5723 (ex-Essex Inst. no. 504). Barbour & Loveridge (1929: 295) cited MCZ 5723 as the “ holotype and genotype”whereas Malnate (1971: 370) cited ANSP 3300 as a “ syntype,” noting that Cope’s Essex Institute specimen (no. 504) was the presumed MCZ “ holotype ” listed by Barbour & Loveridge. In support of this the MCZ Reptile Catalogue reads “from a well” in the remarks column; the specimen was received from the Peabody Museum, which incorporated the Essex Institute, in 1886. However, in Cope’s description (1869: 322) he states that the ANSP specimen he described was “presented by C. Cooke to the Essex Institute, Salem, Mass. (Mus. 504)” and that “it was taken from a well.” His measurement of the specimen was 160 mm; the MCZ specimen measures 196 mm in length. We have examined both specimens: ANSP 3300 bears an old tag reading 411 and measures 158 mm in length. We hereby designate the larger and better preserved specimen at the MCZ (5723) as the lectotype.
description: Published as part of Wallach, Van, 2007, A review of East and Central African species of Letheobia Cope, revived from the synonymy of Rhinotyphlops Fitzinger, with descriptions of five new species (Serpentes: Typhlopidae), pp. 31-68 in Zootaxa 1515 on page 45, DOI: 10.5281/zenodo.177278
Uroleucon (Uroleucon) mongolicum Holman 1975
Creators: name: Kanturski, Mariusz
name: Barjadze, Shalva
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Aphidomorpha
Aphididae
Uroleucon
Uroleucon mongolicum

description: Uroleucon (Uroleucon) mongolicum Holman, 1975
(Figs 1–5)
Uroleucon mongolicus Holman, 1975: 171
Material examined: HOLOTYPE. apterous viviparous female, MONGOLIA, Čulud, 16.viii.1963, on Serratula sp., H. Szelegiewicz leg., APH-8540, ZMPA; PARATYPES. 1 apterous viviparous female, other data as in holotype, APH-8542, ZMPA; 1 apterous viviparous female, APH-8541, ZMPA; 1 alate viviparous female, APH-8543, ZMPA; 1 apterous viviparous female, 198 (2127), IECA; 1 apterous viviparous female, 198 (2127), IECA; Darchan, 04.viii.1963, 2 apterous viviparous females, on Serratula centauroides, H. Szelegiewicz leg., APH-8547, ZMPA; 1 apterous viviparous female, APH-8548, ZMPA; 1 apterous viviparous female, APH-8549, ZMPA; 1 alate viviparous female, APH-8550, ZMPA; 1 alate viviparous female, 114 (2141), IECA; 2 apterous viviparous females, 114 (2141), IECA; Zaisan, 11.viii.1963, 2 apterous viviparous females, on Serratula centauroides, H. Szelegiewicz leg., APH- 8544, ZMPA; 1 apterous viviparous female, APH-8545, ZMPA; 1 alate viviparous female, APH-8546, ZMPA; 2 apterous viviparous females, 157 (2083), IECA.
Remarks: This species has been described thoroughly by Holman (1975) from apterous (Fig. 1b) and alate viviparous (Fig. 1d) females collected by Henryk Szelegiewicz from three localities in Northern Mongolia. Apart from U. lebanonense, it is also similar to U. pilosellae, which also has 3:3:3 setae on HT I. Uroleucon mongolicum can be distinguished easily from U. pilosellae by the fragmented antesiphuncular sclerites, which may be developed as two or three small sclerites in contrast to the large, crescent–shaped and very well developed presiphuncular sclerites in U. pilosellae. Outside Mongolia, U. mongolicum has been reported from Korea and the Russian far east (as U. mongolicum cardui) (Pashchenko 2000; Blackman & Eastop 2020).
U. mulgedii are from Holman (1991).
description: Published as part of Kanturski, Mariusz & Barjadze, Shalva, 2020, A new species of the aphid genus Uroleucon from Lebanon, with notes on the systematic positions of U. altaicum, U. bielawskii and U. mulgedii (Hemiptera: Aphididae), pp. 548-561 in Zootaxa 4853 (4) on pages 554-557, DOI: 10.11646/zootaxa.4853.4.4, http://zenodo.org/record/4411111