cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57780/esa-isvxwvy
title: 089080

description: The long-awaited HAWC discovery of TeV gamma-ray emission from the eastern and western lobes of W50 nebula powered by the microquasar SS433 was the first evidence that accreting X-ray binaries can efficiently accelerate particles to TeV-PeV energies indicating a new class of Galactic PeVatrons. The proposed NuSTAR and XMM observations will complete a broad-band X-ray survey of the particle acceleration and jet termination sites of the W50/SS433 system. Spatially-resolved X-ray spectroscopy will resolve the non-thermal X-ray emission characterize thermal X-ray knots in the western lobe and constrain the jet acceleration efficiency. Our multi-wavelength approach with the proposed observations will provide deep insights to this unique mini-AGN jet interacting with the W50 nebula. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-iy88xil
title: 090334

description: We propose to carry out a simultaneous fit of X-ray images and GBT/MUSTANG-2 SZE measurements for three closest-pair merging clusters discovered by the Subaru HSC Survey. The high angular resolution of 9 arcsec FWHM of MUSTANG-2 allows us to map out the Compton y parameter. A combination of high angular resolution SZE and X-ray imaging enables us to resolve the degeneracy between the number density and temperature in the y parameter and perform a spatially-resolved multi-component analysis to understand complex gas distributions in merging clusters. The HSC survey efficiently discovers on-going mergers and measures WL masses of the main- and sub- halos. Multi-wavelength X-ray SZE and WL studies will provide us with a comprehensive picture of merger boosts of gas properties. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-j0qzhzf
title: 090126

description: The large number of radio-quiet thermally emitting isolated neutron stars (INSs) in our local volume suggests that they belong to a formerly neglected component of the overall population. At fainter fluxes source confusion and contamination from other classes of X-ray emitters hamper the identification of new members due to the large positional and spectral errors. In preparation for the full sensitivity of the eROSITA All-Sky Survey the use of serendipitous data from XMM-Newton proves an excellent opportunity to test search algorithms and discover new INSs. We propose to investigate newly selected candidates from the 4XMM-DR9 catalogue with the immediate goals to improve spectral determination and source localisation for future follow-up studies. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-jg9s0do
title: 088474

description: We propose the observation of two hyper-luminous extra-galactic sources with possible quasi-periodic variability belonging to a sample of virgul40 super- soft X-ray sources we recently discovered. The luminosity and temperature of the objects in this sample is larger than 10^41 erg/s and around 60-100 eV respectively making them either Tidal Disruption Event candidates or Intermediate Mass Black Hole candidates. We propose the observation of 2 of the most extreme sources for which we have a single observation showing hints of short-term variability. Our goal is to check their short-term light-curves for QPOs and their long-term one in order to confirm or exclude their TDE nature. [truncated! Please see actual data for full text]
DOI: 10.25549/examiner-c44-54361
title: Griffith Park Observatory, trip to the moon, 1953.

description: 5 images. Griffith Park Observatory, trip to the moon, 25 May 1953. Doctor Dinsmore Alter; Harold Garb -- 18 -- in space suit.; Caption slip reads: "Photographer: Miller. Date: 1953-05-25. Reporter: Harmon. Assignment: Moon trip. Dr. Dinsmore Alter receives congratulations of preview audience on sixth annual moon trip, Griffith Park. 'Space Cadet' Harold Garb, 18, of South Pasadena, attends moon trip garbed out in latest equipment".
DOI: 10.57780/esa-k4nutjj
title: 091219

description: We propose joint XMM and NuSTAR observations of 12 high-redshift (z  and amp amp amp gt  3) blazars which exhibit brightest and flattest X-ray spectra and host massive ( and amp amp amp gt 1e9 Msun) black holes. Joint Xmm and NuSTAR observations will lead to the most accurate estimation of the beaming factor which will allow us to put stringent constraint on the space density of blazar parent population and in turn the evolution of massive black holes in jetted AGNs within the first two billion years. Using XMM+NuSTAR data we will also probe the role played by the intergalactic medium in the X-ray absorption towards high-redshift blazars [truncated! Please see actual data for full text]
DOI: 10.57780/esa-knf7ujy
title: 091680

description: Covering the central 20*2.5deg2 of the Milky Way disc with 20ks XMM exposures will allow us to measure the flows of hot baryons emerging from the energetic activity in the disc to detail their impact on the surroundings and to connect the sources in the disc with the base of the Galactic outflow. By connecting the requested XMM scan with the shallow all sky eROSITA survey we will determine whether the activity in the Galactic disc is important for feeding and sustaining the Galactic corona. This study will provide us with an excellent archetype for advancing our understanding of galaxy evolution theory in a Milky-Way-class galaxy. This project will produce a legacy dataset that will be used in the future for multiple purposes including multi-wavelength and time-domain investigations. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-kthltru
title: 088497

description: One of the most unexpected and surprising results from recent XMM-Newton observations of active galactic nuclei (AGN) is the discovery of a new X-ray variability pattern from the active galaxies GSN 069 and RX J1301.9+2747 both reported by our team recently. In both cases the X-ray light curve exhibits recurrent X-ray bursts of high amplitude (up to a factor of 100 with respect to the stable quiescent level) dubbed quasi periodic eruptions (QPEs). QPEs have been observed in GSN 069 over the course of about one year and the latest observations show that the phenomenon has apparently disappeared. We propose here two relatively short XMM-Newton observations of GSN 069 separated by about 6 months to clarify whether QPE disappearance is transient or permanent. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-ky0e5vv
title: 091099

description: We propose to monitor 1ES 2344+514 over seven months with the goal of better understanding its intermittent extreme behaviour. 1ES 2344+514 is a nearby (z=0.044) high energy peaked BL Lac. So far clear extreme behaviour of the source has been observed only in high states. During an X-ray flare in 1996 a shift of the synchrotron peak to frequencies above 3*10**18 Hz was reported. A similarly extreme behaviour was not found in subsequent MWL campaigns during low states thus suggesting the extreme behaviour being a feature of high states. Still the small number of published MWL observations does not allow for a coherent picture of the complex spectral behaviour of 1ES 2344+514. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-ky6r3rp
title: 090275

description: Stacking of SZ signals (Y) by stellar mass produces a significant signal which has been used to infer the halo gas mass of galaxies. Interpreting the stacked signal assumes the Y distribution (at fixed M*) is narrow symmetric and for a uniform sample of objects. These conditions are violated when stacking in stellar mass bins so one must understand the distribution of Y as a function of galaxy environment (M* gal/M*tot). This cannot be obtained from the weak individual SZ signals but can be inferred from X-ray observations. We propose to complete our X-ray studies of 15 nearby galaxies that were previously used in a stack of SZ signals. We will measure the distribution of Y _X  (X-ray analog of SZ) to quantify the dependence of halo gas mass on galaxy environment. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-l33ndl0
title: 090344

description: We propose to study one known hyperluminous X-ray source NGC 470 HLX1 simultaneously with XMM and NuSTAR for the first time. Archival soft X-ray data suggest that the source exhibits a hard pulsator like spectra and shows a marginal hint of pulsed signal. This motivates us to detect the pulsation in the new high S/N data with high confidence and study its broadband spectral properties to understand its underlying accretion mechanism which was previously not possible due to unavailability of broadband X-ray data. Pulsar population in HLXs are rare hence if the detection of pulsation emerge to be a real signal NGC 470 HLX1 will be the second HLX pulsar. Therefore we propose to coordinate a simultaneous observation with 70 ksec XMM and 120 ksec NuSTAR exposure for NGC 470 HLX1. [truncated! Please see actual data for full text]
DOI: 10.15468/dl.urj5gr
title: Occurrence Download

description: A dataset containing 103 species occurrences available in GBIF matching the query:
{
 "and" : [
 "GadmGid is ITA.13_1",
 "TaxonKey is Rhinolophus ferrumequinum (Schreber, 1774)"
 ]
}

 The dataset includes 103 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0017446-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/examiner-c44-54845
title: Smog, 1953

description: 5 images. Smog, 24 September 1953. Views from City Hall Tower and 6th Street Bridge; Hall of Justice; Board of Education; Temple Street and Hollywood Freeway between Temple Street and Board of Education looking west from City Hall; Federal Building -- North Spring Street and North Main Street; General view toward Civic Center looking Northwest from 6th Street Bridge.; Caption slip reads: "Photographer: Hecht. Date: 1953-09-24. Assignment: Smog. 74/75: Lower right corner -- Hall of Justice, upper right corner -- Board of Education, Temple Street on the left and Hollywood Freeway between Temple Street and the Board of Education. (Looking West from City Hall tower). 3: Federal Building in the center with N. Spring Street on the left and N. Main Street on the right. (Looking North from City Hall tower). 128/129: General view toward civic center looking Northwest from 6th Street bridge".
DOI: 10.57780/esa-l7x8c31
title: 092377

description: We request one 130ks XMM-Newton observation of a radio-flaring high-synchrotron-peaked BL Lac object that is affected by the so-called Doppler crisis. For this intriguing class of objects previous radio observations have typically found sub-luminal apparent jet speeds while their bright variable very-high-energy TeV gamma-ray emission and multiwavelength spectral models suggest very-high Doppler factors. We will observe such an object with the Event Horizon Telescope (EHT) as part of a triggered proposal. In order to understand the multiwavelength emission and possibly resolve the Doppler crisis for this source we request quasi-simultaneous XMM-Newton observations which will provide an independent probe of the Doppler factor by studying minute-scale variations in the X-ray light curve. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-ljs6edu
title: 089140

description: We ask for ToO observations of flaring AGNs. The scientific motivations are many: they provide unprecedented photon statistics valuable for both scoping the intrinsic spectra and variability of AGN and competing models for those (one-zone or two-zones leptonic or hadronic) as well as detecting new VHE gamma-ray emitting sources (e.g. FSRQs gravitationally lensed quasars) and source classes (e.g. NlSy1) that can only be detected during bright flares. We will take triggers from: 1. Optical (Tuorla blazar monitoring program) 2. SWIFT (GCN/ATel alerts) or MAXI (ATel) 3. Fermi-LAT (MAGIC internal analysis chain and priv. comm.) 4. VHE I?-rays flare based on MAGIC/VERITAS/H.E.S.S./HAWC/FACT 5.VHE I?-ray flare seen by MAGIC (self-trigger) 6. Fast rise/decay seen by FACT 7. ATel/GCN. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-ly5z7jg
title: 091159

description: The goal of this proposal is a detailed long-term study of the temporal and spectral behaviour of the blazar 1ES 1959+650 to investigate further features seen in past campaigns with MAGIC and build-up a legacy data sample. After a  low state since 2002 bright outbursts in 2016 were surrounded by intermediate activity (2015-2018). Past observations have revealed a peak-shift towards higher energies hinting an EHBL-like nature fast intra-night and long-term variability as well as complex correlation patterns between wavebands. These features  challenge simple one-zone synchrotron self-Compton models and suggest a more complex emission region. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-m5526ag
title: 091479

description: Dedicated ToO proposal for GSN 069 19 x 13 ks obs  one obs per rev To be observed in revolutions: 4208-4209-4210-4212-4213-4214-4216-4217-4219-4221- 4222-4223-4225-4226-4227-4228-4229-4230-4231
DOI: 10.25549/examiner-c44-16896
title: Olympic fighting, 1951

description: 8 images. Olympic fighting, 10 July 1951. Jim Dunn versus Red Martinez; Ramon Perez versus Bob Schilling; Enric Bolanos versus James Carter.; Caption slip reads: "Photographer: Jensen. Assignment: Olympic fites. For Test: J-57: Jim Dunn vs Red Martinez (down). J-58: Jim Dunn vs Red Martinez (down 6th round). 47: Ramon Perez vs Bob Schilling (down) and 48: KO'd 1st round".
DOI: 10.57780/esa-mcqwepx
title: 088463

description: We recently carried out the 3CR snapshot survey designed to complete the X-ray coverage of all extragalactic radio sources listed in the Third Cambridge catalog (3CR). Here we request XMM-Newton follow up observations of two low-redshift radio galaxies: 3CR403.1 and 3CR430 harbored in galaxy clusters. We aim at estimating spectral parameters of both galaxy clusters surrounding these FRII radio galaxies and measure the extension of the galaxy cluster tracing the diffuse X-ray emission due to the intergalactic medium (IGM) in comparison with the detected radio structures at virgul150 MHz. We will also be able to compare galaxy cluster properties of both our targets with those of FRIs at similar z crucial to test results recently achieved with our statistical analyses. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-md4nas3
title: 093059

description: #1 SGR1806-20 #2 B2 0917+23 #6#8 ESO 198-G23 (tanks replenishment)
DOI: 10.57780/esa-mp1l5em
title: 090424

description: We have recently identified an exceptional strong lensing cluster at z=1.335: A bright giant arc with a spectroscopically measured redshift z=3.29 is seen at a large angular radius of 18 and two additional multiply lensed background sources have been identified in recent HST imaging. XMM data are needed to determine whether this remarkable lensing strength is generated by a single massive cluster with a deep potential well or projection effects of multiple correlated or uncorrelated structures along the line of sight. We request joint Chandra observations to identify exclude point sources and VLT MUSE observations to search for line-of-sight structures in the redshift distribution of galaxies. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-mpktuwd
title: 089043

description: While future soft X-ray (0.5--2 keV) surveys are being designed to discover high-redshift (z  and amp amp amp gt  9) heavy-seed mass black holes (hsBHs) with M BH virgul 10^5 M SUN a rest-frame hard X-ray spectral model is crucial to understand how many hsBHs can be detected. Motivated by this we propose a simultaneous 70-ksec NuSTAR and 20-ksec XMM-Newton observation to a local AGN in POX 52 with M BH virgul 3x10^5 M SUN and L 2-10 virgul 10^42 erg s^-1 resembling the future targets. While there are two expected X-ray models: (1) a power-law with low-energy cutoff like ultra-luminous X-ray sources and (2) one with high-energy cutoff and reflected emission like Seyfert galaxies the superior sensitivity of NuSTAR above 10 keV will distinguish them and provide a reliable hard X-ray spectral template. [truncated! Please see actual data for full text]
DOI: 10.25549/examiner-c44-72872
title: Santa Fe train wreck, 1956

description: 21 images. Santa Fe train wreck, 22 January 1956. 1 prize out. (Sleeve reads: A-11701-022).
DOI: 10.57780/esa-mwthbmh
title: 091679

description: Covering the central 20*2.5deg2 of the Milky Way disc with 20ks XMM exposures will allow us to measure the flows of hot baryons emerging from the energetic activity in the disc to detail their impact on the surroundings and to connect the sources in the disc with the base of the Galactic outflow. By connecting the requested XMM scan with the shallow all sky eROSITA survey we will determine whether the activity in the Galactic disc is important for feeding and sustaining the Galactic corona. This study will provide us with an excellent archetype for advancing our understanding of galaxy evolution theory in a Milky-Way-class galaxy. This project will produce a legacy dataset that will be used in the future for multiple purposes including multi-wavelength and time-domain investigations. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-myvgk5n
title: 090335

description: We propose to perform two 35 ksec ToO follow-up observations of X-ray luminous sources that we identify in association with IceCube cosmic high-energy neutrinos using the AMON multimessenger framework. Since identification of the first probable source of high-energy neutrinos in 2018 the blazar TXS 0506+056 multiwavelength follow-up of IceCube.s neutrino alerts has proven its utility for characterizing multimessenger neutrino and electromagnetic sources and we aim to use this approach to identify more such sources. We will conduct XMM-Newton follow-up studies of counterparts identified via Swift/XRT observations. While capable of rapid response [truncated! Please see actual data for full text]
DOI: 10.57780/esa-n14gd4g
title: 091539

description: #2 ZTF22abajudi #3 LSI +61 303 #4#5 WISEA J045649.8-2037 #7 1ES 1927+654  #9 4U 0142+61 #10 LS V +44 17 #13 PSR B1259-63 #14 GRB 230307A#16 GRB 230307A #17 GRB230307A
DOI: 10.57780/esa-n55537v
title: 090331

description: The rare active galactic nuclei (AGN) that are oriented toward us so that their accretion flow exhibits disk-like megamaser emission present a remarkable opportunity to study the geometry of the AGN obscurer on typically unresolvable parsec scales. Not only is their orientation highly constrained but their black hole masses are well measured which is otherwise difficult to achieve in obscured AGN. Their high obscuring columns allow us to directly detect and more robustly model the reprocessed X-ray spectra onto which features due to the geometry of the obscuring gas are imprinted. With a total of 256 ks of XMM-Newton and 310 ks of NuSTAR time we propose to significantly expand the sample of nearby AGN for which obscurer geometry can be uniquely constrained using broadband X-ray data. [truncated! Please see actual data for full text]
DOI: 10.25549/examiner-c44-54431
title: Coliseum Commission, 1953

description: 4 images. Coliseum Commission, 01 December 1953. Mrs. Rollin Brown; Maurie Luxford; Robert Burns; Ralph Matteson; McIntyre Faries; William Mealey; Kenneth Hahn; Standish Mitchell; William Nicholas.; Caption slip reads: "Photographer: Olmo. Date: 1953-12-01. Reporter: Durslag. Assignment: Coliseum Commission. 73-74: L to R, seated: Mrs. Rollin Brown; Maurie Luxford; Robert Burns. L to R, standing: Ralph Matteson; McIntyre Faries; William Mealey; Kanneth Hahn; Standish Mitchell; William Nicholas. 75-76-8: L to R: Kenneth Hahn; Maurie Luxford; Standish Mitchell".
DOI: 10.57780/esa-n82eiuh
title: 086421

description: Fast optical-infrared photometry applied to black hole transients has shown to be one of the most powerful tools to probe the jets in its innermost regions. Extending this approach to accreting neutron stars (NS) we discovered during AO17 the presence in 4U1728-34 of subsecond correlated variability between the X-ray and IR emission arising most probably from a relativistic jet. Moreover we also detected an IR burst lagging an X-ray burst allowing us to measure the orbital period of the system. These new fascinating results open a new window on the study of the accretion processes around NS. We ask to perform 6 (total 63ks) XMM pointings to be matched by 6 (total 14h) HAWK-I@VLT observations of 4U 0614+09 and 4U 1728-34 4U 1705-44 in order to explore the fast variability in NS. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-ndanenm
title: 088218

description: Magnetars are neutron stars mainly powered by their huge magnetic fields. They go through long stretches of quiescence interrupted by periods of activity via short X-ray bursts large giant flares and yearly-timescale X-ray outbursts. Lately several normal pulsars showed magnetar-like emission and an FRB-like event was observed during a short X-ray burst prompting important questions on the exact physics and reach of the magnetar phenomenon. We propose a Joint XMM (85ks) and NuSTAR (170ks) ToO program aimed at gathering new insights on the physics involved in the magnetar outbursts. We will trigger this program on any object that will undergo a magnetar-like outburst during AO20 (especially non-canonical magnetars or FRB-like emitters). [truncated! Please see actual data for full text]
DOI: 10.57780/esa-o5qnzw6
title: 090323

description: We propose to complete the last virgul5% of high-quality observations for the eeHIFLUGCS galaxy cluster sample (16 of 376 clusters). The sample is based on ROSAT with completely and homogeneously redetermined fluxes as well as updated redshifts. For the already observed clusters we have also identified  and amp amp amp gt 10 double/triple clusters and clusters dominated by AGN emission which then fall below the flux limit of 5e-12 erg/s/cm2. With the completed follow-up observations we will decrease the uncertainties in OmegaM by a factor of 2.8 compared to those obtained with the HIFLUGCS sample. If these virgul5% do not get observed the flux-limited sample drops by almost a factor of 3 to a disappointing 140 clusters. The observations will have long lasting legacy value for a range of astrophysical studies. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-o8kbz62
title: 090191

description: The nature and location of the missing baryons in the universe remains a major mystery. We propose joint Chandra and MUSTANG-2/GBT observations of two close pairs of galaxy clusters recently detected in SZ by ACT with possible intergalactic gas filaments between them. The MUSTANG-2 and ACT SZ data will be combined to model the SZ on both large and small scales. Both the Chandra X-ray image and SZ allow the separation of the cluster and the filament gas. Recently X-ray and SZ observations have been used to study the filament between the clusters Abell 399 and 401. The combination of X-ray and SZ observations allows the density temperature pressure and 3D shape of the filaments to be determined. These observations will help constrain the nature of the missing baryons in the universe. [truncated! Please see actual data for full text]
DOI: 10.25549/examiner-c44-73276
title: Lake Hughes fire, 1953

description: 17 images. Lake Hughes fire, 24 August 1953. General views of brush fire at Lake Hughes.; Caption slip reads: "Photographer: Olmo. Date: 1953-08-24. Reporter: Adler. Assignment: Lake Hughes fire. Brush fire near Lake Hughes. Firemen & boys trying to keep flames from jumping firebreak; County Fire Chief Keith Klinger".