cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57780/esa-6m2x0p1
title: 086356

description: The high-energy radiative environment around low-mass stars is driven by emissions from the stellar upper atmosphere comma  including the transition region and corona. These emissions from X-rays to ultraviolet wavelengths have important consequences for exoplanetary atmospheres and their evolution comma  including significant mass loss and atmospheric chemistry. We propose to measure the X-ray emission in a UV selected sample of active M-dwarfs to examine the rotational evolution of both X-rays and UV emission comma  and constrain how M-dwarf coronal structure changes with angular momentum evolution. These data will enable new efforts to estimate otherwise unobservable extreme ultraviolet emission comma  an important ingredient in planet atmospheric modeling comma  through modeling of the coronal atmosphere.
DOI: 10.57780/esa-6togn8k
title: 088309

description: A powerful new approach to study early galaxy formation is through massive relic galaxies openParMRGsclosePar which are local analogs of the high-redshift red nuggets thought to represent progenitors of today.s early-type galaxies. X-ray observation of the hot diffuse gas of MRGs is the most viable means to measure the global properties like the halo concentration comma  mass comma  and baryon fraction comma  but only two MRGs have been identified that are suitable for such an X-ray analysis. To remedy this comma  we constructed a sample of MRGs to map in detail their X-ray emission. We propose a snapshot survey of the 5 MRGs in the sample which lack any X-ray data. Deep follow-up exposures with XMM-Newton and Chandra of promising targets will then be sought for detailed analysis of their mass distributions.
DOI: 10.57780/esa-718ow1g
title: 086394

description: A linear correlation between X-ray and optical CORCHETE_OPENOIIICORCHETE_CLOSE line luminosities in AGN is thought to manifest the ionization of low-density gas by the field of high- energy photons from the central black hole vicinity. It is often used to estimate the AGN ionizing flux from optical spectra. We identified 33 AGN powered by low-mass BHs openPar<6e5 MSunclosePar. They form a tight openParspread 0.23dexclosePar sub- linear openParL_OIIIvirgulL_Xelev0.48closePar relation that steepens and puffs up once more massive objects are included. We propose to observe a complete flux limited sample of 21 AGN with low-mass BHs openPar<1e6 MSunclosePar with available optical IFU spectroscopy. We will pin down the transition mass where the L_OIII-L_X slope changes and check whether it is connected to AGN-driven outflows comma  internal structure comma  dynamics comma  and star formation
DOI: 10.57780/esa-7b9wyrz
title: 088499

description: The growth of Supermassive Black Holes powering luminous quasars at the Epoch of Reionization openParEoR comma  z>6closePar is a hot topic in astrophysics. These quasars are being characterized with large multiwavelength campaigns with current flagship observatories. X-ray observations performed so far provided mostly < 15 counts in 0.5-10 keV spectra and thus a poor characterization of their properties. We propose HYPERION comma  a 2.3 Ms Multi-Year Heritage programme comma  to dramatically improve data quality to 100 counts for 15 luminous quasars at EoR comma  delivering unprecedented constraints on nuclear properties comma  accretion comma  ejection comma  disc-corona complex. It will nicely complement observations at other wavelengths enabling meaningful X-ray spectroscopic studies at EoR to begin.
DOI: 10.57780/esa-7bbh6vc
title: 087261

description: We propose a joint 6x30 ks Chandra and 6x40 ks XMM-Newton monitoring campaign of the lens system RXJ1131 to reach the following goalsdoublePoint openPar1closePar Confirm and validate  the microlensing method of constraining the spin and inclination angle of a  z=0.658 lensed quasar. openPar2closePar Identify the origin of the soft excess comma  and openPar3closePar  compare these results to those obtained by employing the relativistic Fe line method. The Chandra observations are crucial in resolving the 4 images comma  unambiguously identifying a microlensing event comma  and providing the unlensed source spectrum. XMM-Newton has the required effective area to provide constraints on the soft and hard reflection components originating from the disk.
DOI: 10.57780/esa-7bmip5l
title: 087102

description: Recent observations point out that Low-luminosity active galactic nuclei comma  such LINERs and low power Seyfert galaxies comma  might have a different torus configuration compared to more powerful AGNs. The shape of the Compton hump observed above 10 KeV is an excellent tool to study the geometry and the physical features of the reflector. The purpose of this proposal is study a low powered openParL-LEdd sim 10elev-5closePar Seyfert galaxy NGC 5033 comma  to study the characteristics of the material surrounding the SMBH. We ask for observations with NuSTAR and XMM-Newton to study the relation between the accretion rate and properties of the reflector openPartorus covering fraction and column densityclosePar and to compare with existing comma  similar quality data of a LINER with equal black hole mass and accretion rate.
DOI: 10.57780/esa-7ect356
title: 086046

description: We propose a 100ks observation of the original black widow PSR J1959+2048 comma  increasing by >3x the X-ray exposure of its intrabinary shock. Fits to these data determine the binary inclination i openParused in measurement of the neutron star massclosePar and the wind momentum flux and sweep-back openParused to measure the companion evaporation rateclosePar. The X-ray spectra also probe the nature of the IBS particle acceleration comma  likely due to reconnection in the striped pulsar wind. These measurements advance our understanding of evolution in such close binaries and can help constrain the properties of high density matter.
DOI: 10.57780/esa-7f7vp93
title: 086252

description: Our X-ray surveys of UV-emitting AGB stars show that 40% of objects with FUV emission and FUV-NUV flux ratios >virgul0.2 have variable X-ray emission characterized by very high temperatures openParTx virgul 35-160 MKclosePar and luminosities openParLx virgul 0.002-0.2 LsunclosePar comma  indicating the presence of accretion associated with a close binary companion. However comma  the UV-emitting AGB star population is dominated by objects with little or no FUV emission comma  and we do not know whether the UV emission from these is intrinsic to the AGB star or extrinsic openPari.e. comma  due to binarityclosePar. We propose a small X-ray survey of NUV-bright AGB stars with low openPar<0.1closePar FUV-NUV flux ratios to help distinguish between intrinsic and extrinsic models of the puzzling high-energy emission of cool AGB stars.
DOI: 10.57780/esa-7gz9cju
title: 087093

description: Multi-epoch broadband spectroscopy of the ultraluminous X-ray source openParULXclosePar NGC1313 X-1 has revealed unusual spectral variability.  When fit with  accretion disk models comma  the data show two distinct groups in the L-T plane comma  each of which exhibits its own positive L-T correlation.  Understanding this behaviour is likely key to understanding the structure of super-Eddington accretion flows.  Holmberg IX X-1 also shows some evidence for this behaviour comma  but there is currently only one broadband observation in the high-flux regime comma  meaning this cannot yet be firmly established.  This proposal aims to take a series of 4 XMM+NuSTAR observations openPareach 25+50ksclosePar of Holmberg IX X-1 in its high-flux state in order to determine whether it does show the same unusual behaviour as NGC1313 X-1.
DOI: 10.57780/esa-7i8qcdp
title: 086514

description: Heavily obscured accretion is believed to be an extremely important phase in the growth of supermassive black holes comma  and to produce a signi cant fraction of the Cosmic X-ray background. Studying in detail the broad-band X-ray emission of the 830 AGN reported in the 70-months Swift-BAT catalog comma  we found evidence of CT obscuration in 55 objects comma  which makes this the largest sample of CT AGN in the local Universe. We propose to observe the remaining 10-55 sources which lack an XMM-Newton or Suzaku observation as a ful l program. These observations will constrain the brightest end of the luminosity function of CT AGN and the evolution of the covering factor of the CT material comma  besides serving as a benchmark to study luminous CT AGN at higher redshifts.
DOI: 10.57780/esa-7jjwf04
title: 088156

description: Whereas supermassive black holes openParSMBHsclosePar are found in essentially every galactic bulge comma  very few SMBHs are known in purely bulgeless galaxies. Identifying such a population is crucial to our understanding of the origins of SMBHs and the secular pathways for their growth. However comma  to date comma  there are only a handful of confirmed SMBHs in purely bulgeless galaxies known in the Universe. We have identified a population of bulgeless galaxies that display extreme red mid-infrared colors thus far exclusively associated in extragalactic sources with powerful AGNs and hidden broad line in several targets comma  despite showing no evidence for accretion activity. We request XMM observations to confirm the AGNs anddetermine their luminosites.
DOI: 10.57780/esa-7k5gmdu
title: 086158

description: The origin of X-ray emission in Herbig Ae-Be stars comma  intermediate-mass pre-main sequence stars comma  is still disputed comma  as these objects are not expected to be able to drive a dynamo to sustain magnetic activity. Their progenitors comma  the intermediate-mass T Tauri stars openParIMTTSclosePar comma  cover the transition from a convective core to a fully radiative one comma  which is important for the presence of a magnetic field comma  and thus their X-ray activity. At the same time IMTTS are still accreting from their protoplanetary discs comma  which also contributes to their X-ray output. We have compiled a openParto our knowledge completeclosePar sample of 75 IMTTS comma  and aim to compare their X-ray properties in relation to their masses comma  ages and accretion rates. We apply for an XMM survey for 29 IMTTS to complete the sample coverage in X-rays.
DOI: 10.57780/esa-7q9dx81
title: 088234

description: Knowledge of the structure and kinematics of gas around supermassive black holes is vital to understanding accretion and thus AGN feedback. To this end comma  we comma  the AGN STORM 2 team comma  have been awarded a Large 198-orbit Hubble Space Telescope program and a Las Cumbres Observatory Key Project to measure reverberation lags in Mrk 817. Previous UV-optical reverberation mapping campaigns have successfully mapped the outer accretion disc and broad line region comma  but reveal that X-rays openParthought to be the primary driver of multi-wavelength variabilityclosePar do not correlate with longer wavelengths as well as expected. X-ray spectral and timing measurements are necessary to track changes in the geometry and dynamics of the inner accretion flow that likely affect our inference of the outer disc and outflow str
DOI: 10.57780/esa-7x39ypu
title: 087092

description: Periodically pulsed X-ray emission from the nearby B2 star Rho Oph A have been discovered along with a variable magnetic field and strongly modulated radio emission. All these observations fit in a model of an oblique magnetic rotator comma  where comma  alternatively comma  the magnetic poles and their radio emission point towards the Earth. In this proposal we request to use NuSTAR and XMM-Newton to monitor Rho Oph A for about two rotational periods openPartotal exposure virgul140 ksclosePar in order to clarify the link between X-rays comma  radio emission and magnetism which requires us to firmly characterize its high energy openPar> 10 keVclosePar emission. The hard X-ray spectrum will provide a clear signature of non-thermal emission and a better knowledge of the auroral emission and particle acceleration in magnetic B stars.
DOI: 10.5281/zenodo.7805104
title: Il torrente Parma nelle carte Catasto Cessato Italiano dell'Archivio di Stato di Parma

description: Schedatura e metadatazione dei contenuti delle carte inerenti il corso del torrente Parma nel fondo archivistico <em>catasto cessato italiano</em> dell'Archivio di Stato di Parma
DOI: 10.57780/esa-7y7k3br
title: 086222

description: The Ophiuchus cluster exhibits a curious concave gas discontinuity near its core. It was discovered by Werner et al comma  who considered a possibility of it being a boundary of an AGN-inflated bubble comma  but discounted it because it required too powerful an outburst. Using very low-frequency openPar70-240 MHzclosePar data from MWA-GLEAM and GMRT comma  we found that it is in fact a giant bubble filled with diffuse radio emission with an extremely steep spectrum. It appears to be a fossil of the most powerful AGN outbursts seen in any cluster - with the central AGN being a negligible radio source at present. We propose to survey this sector of the cluster to map the X-ray cavity comma  look for signs of cluster-scale sloshing possibly triggered by this powerful event openParhinted at by ROSATclosePar comma  and clarify the merger details.
DOI: 10.5281/zenodo.7805103
title: Il torrente Parma nelle carte Catasto Cessato Italiano dell'Archivio di Stato di Parma

description: Schedatura e metadatazione dei contenuti delle carte inerenti il corso del torrente Parma nel fondo archivistico <em>catasto cessato italiano</em> dell'Archivio di Stato di Parma
DOI: 10.57780/esa-83fdugw
title: 080407

description: The detection of jet-breaks in short GRBs afterglow light curves provided evidence that their emission is collimated. The knowledge of the jet opening angle openPartheta_jclosePar distribution of short GRBs is mandatory for a proper understanding of the true energetics and rate of this class of events. Only a handful of the short GRBs observed by Swift to date has a robust estimate of theta_j. We propose here to overcome this limit by carrying out ToO XMM-Newton observations of a sub-sample of Swift short GRBs openParselected maximizing the possibility of multi-wavelength follow-upclosePar comma  hunting for a jet-break signature in their late-time X-ray afterglow light curves. The increasing evidence for compact object binary progenitors makes short GRBs one of the most promising sources of GWs.
DOI: 10.57780/esa-89hpnik
title: 086298

description: Studies of heavily obscured active galactic nuclei openParAGNclosePar suggest that the torus that causes the obscuration is patchy comma  rather than uniform. The line-of-sight column density openParNH_losclosePar of the obscuring material should vary over weeks to months comma  but such an evidence has been observed only in a few X-ray detected AGN comma  due to lack of large samples of heavily obscured AGN with multi-epoch observations. We propose for a XMM monitoring of NGC 1358 comma  a nearby Compton thick openParCT-closePar AGN with small torus covering factor and NH_los significantly larger than the torus average column density. Through this monitoring comma  we expect to measure significant variability in NH_los and detect a transition from CT- to Compton thin comma  thus improving our knowledge on the properties of the obscuring material surrounding AGN.
DOI: 10.57780/esa-89w35m2
title: 080445

description: We propose a 35 ks XMM-Newton observation during the outburst of a very-faint X-ray transient. These peculiar X-ray binaries are underluminous by orders of magnitudes compared to the well-studied classical openParbrightclosePar X-ray transient population. Some of them have been identify as accreting neutron stars comma  whereas only one black hole has been conclusively identified so far. However comma  the nature of the vast majority remains unclear. This XMM-Newton observation will allow us to carry out a detailed spectral analysis of a very faint transient openPar< 10 performed so farclosePar in order to openPariclosePar shed light on the nature of this growing population and openPariiclosePar the reason for their sub-luminous behaviour.
DOI: 10.57780/esa-89wn7nz
title: 088509

description: We propose the first simultaneous XMM-Newton and NuSTAR observation openPar130ksclosePar of the highly-variable AGN NGC 6814. We will apply the latest self-consistent broad-band spectroscopic models comma  robustly anchoring the fit with simultaneous UV-optical and hard X-ray measurements. We will also track the rapid variations of the source comma  extending Fourier lag measurements into the reflection band >10keV for the first time. Additionally comma  through the first ever Chandra observation of this source openPar60ksclosePar comma  we will resolve the FeK profile for the first time comma  allowing us to disentangle any components of inner and outer disc reflection.
DOI: 10.57780/esa-8eky90i
title: 088304

description: The role played by active galactic nuclei openParAGNclosePar in the evolution of galaxies from an actively star-forming state to quiescence is still poorly understood. Post- starburst galaxies comma  particularly those caught early in their transition comma  provide an important testing ground for examining this question. There are hints that a large fraction of post-starburst galaxies may contain AGN or AGN-driven activity. We undertook a 10ks snapshot survey of 12 post-starburst galaxies with Chandra and detected X-ray emission in 9 of the 12 observed. However comma  these data have in- sufficient counts to determine the nature of this emission and distinguish between AGN and thermal emission. We propose to observe two of the most interesting galaxies from this sample in order to characterize their nuclear emission.
DOI: 10.57780/esa-8gb6iwo
title: 084094

description: We propose a 72 ks XMM-Newton EPIC observation toward G7.7-3.7 comma  a candidate historical supernova remnant openParSNRclosePar comma  with the aim of pinning down its association to the guest star which appeared in 386 CE for 2--4 months. If confirmed comma  G7.7-3.7 would be one of four historical Type-II SNRs comma  enlarging the small sample that is used for studying the endpoints of massive stars. G7.7-3.7 may be the only known SNR to be produced from a rare comma  low-luminosity Type-IIP SN openPar5% of all Type-II SNeclosePar and is therefore worthy of detailed study. The proposed XMM-Newton observation will greatly improve the accuracy of the SNR-shock age and allow us to study the SNR s properties and search for synchrotron emission.
DOI: 10.57780/esa-8h3lpmb
title: 084004

description: The Messier catalogue is one of the most famous lists of astronomical objects. By creation comma  the Messier catalogue contains the brightest and nearest objects of each objects class in the Northern Sky. Therefore comma  every extended Messier object is of huge archival value for detailed multi-wavelength studies and most suited to be observed with XMM-Newton. We propose the observation of the missing openParvisibleclosePar objects of the Messier catalogue with an exposure time of 20 ks to establish a legacy data set within the fulfil program of XMM-Newton.
DOI: 10.57780/esa-8hbz3on
title: 086161

description: Brightest Cluster Galaxies openParBCGsclosePar residing in the centers of galaxy clusters are typically quenched giant ellipticals. Optical studies hinted comma  and our previous XMM-Newton observations confirmed comma  that some superluminous disk galaxies are BCGs. The existence of such a BCG population is at odds with our understanding of the formation of these galaxies. Our AO-18 XMM-Newton program aimed to confirm the presence of additional superluminous disk galaxies at the center of galaxy clusters. However comma  due to soft proton flares comma  one of the most promising superluminous spiral galaxy and its host cluster could not be characterized. We request a short follow-up observation to carry out a dependable analysis of the galaxy cluster and its superluminous spiral BCG.
DOI: 10.57780/esa-8ijtzij
title: 084228

description: CCO pulsars are stable rotators with weak dipole B-fields and small spin-down rates. Old radio pulsars with similar spin parameters as CCOs are never seen to glitch. However comma  the CCOs are much younger than their timing ages comma  and we have discovered the first CCO glitch comma  in our X-ray monitoring of 1E 1207.4-5209. CCOs are theorized to have strong comma  buried crustal B-fields that will diffuse out in <1 Myr. The detection of a glitch therefore supports a recent conjecture that they could be triggered by the diffusion of these strong fields. We propose to continue timing 1E 1207.4-5209 comma  to verify the unexpected large change in its post-glitch spin-down rate comma  and to monitor the CCO in Puppis A for similar glitches. These observations may allow a first measurement of NS surface magnetic field growth
DOI: 10.57780/esa-8nahomj
title: 086501

description: We propose an 855 ks openPar9x95 ksclosePar large program on the well-known narrow line Seyfert 1 galaxy comma  RE J1034+396 comma  in order to study the X-ray quasi-periodic oscillation openParQPOclosePar in unprecedented detail. These signatures of strong gravity are common to high accretion-rate processes across the mass range. The QPO in RE J1034+396 is already confirmed in 6 XMM-Newton observations comma  though 4 of these are too short to study the feature at high frequency resolution. We will conclusively measure the harmonic oscillation and use spectral- timing methods to place important constraints on the underlying physical QPO mechanism. We will also use the dynamics of this feature to provide insight into the accretion-ejection processes associated with high- Eddington rates. This is an observation only XMM-Newton can make
DOI: 10.57780/esa-8sgmkbs
title: 084144

description: All TeV-emitting supernova remnant openParSNRclosePar shells that have been detected so far show strong non-thermal X-ray synchrotron emission comma  evidencing the presence of supra-TeV electrons. Here comma  we propose to observe the Southern part of the newly identified TeV SNR shell HESS J1534-571 with XMM-Newton in an exploratory 30 ks pointing comma  to pin down the X-ray emission from the object. Previous Suzaku pointings on the Northern part of the shell have revealed a surprisingly low level of X-ray synchrotron emission from this part of the object comma  which may indicate that HESS J1534-571 differs from the other known TeV SNRs and potentially exhibits hadronic TeV emission. The proposed XMM-Newton observation will scrutinize this result before strong conclusions can be drawn.
DOI: 10.57780/esa-8t46ohc
title: 089101

description: NuSTAR can make a transformational advance in our understanding of how luminous accreting black holes work through long observations of rapidly-variable comma  X-ray-bright AGN. This enables X-ray reverberation studies comma  already a commonplace feature of AGN comma  to proceed to the next level and follow the behavior of the powerful dynamic corona and map the accretion flow immediately next to the black hole comma  measuring both spin and mass of the black hole. We propose a 500ks NuSTAR observation of the X-ray brightest high variability NLS1 AGN 1H1934-063 comma  with 260ks of XMM comma  to measure relativistic reflection and reverberation in 3 flux states.
DOI: 10.57780/esa-8tcfcs8
title: 084464

description: We propose an XMM-Newton observation of V407 Lup comma  a nova in outburst in 2016 comma  thought to be an intermediate polar comma  as it settles back into quiescence. The goal is to learn about the physics of this special type of novae by measuring the spectrum and the white dwarf rotation period in the early phase of inter-outburst magnetic accretion comma  and possibly by monitoring the final quenching of thermonuclear burning comma  which may end at the poles of the magnetic white dwarf later than on the rest of the accreted envelope. During its eruption comma  V407 Lup has been the object of a detailed multiwavelength study by our group. We intend to follow up and explore how the magnetic field modulates the secular evolution.