cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57780/esa-phzv79q
title: 087087

description: We propose XMM-Newton observations of 6 regions of the Large Magellanic Cloud with the strongest d_commacleand_comma star-formation openParSFclosePar episodes in the virgul6-50 Myr age range. These observations will probe the X-ray source populations in regions of different stellar content down to a luminosity of virgul10elev33 erg-s in our nearest star-forming galaxy thus addressing their dependence on their parent stellar populations openParstarburst age comma  metallicity etc.closePar The proposed observations will complement previous X-ray studies of the LMC and investigations in other galaxies where these faint XRBs cannot be observed.
DOI: 10.57780/esa-pn7ltur
title: 088468

description: Discoveries by the NASA TESS mission of nearby stars hosting planets either side of the ..radius-period valleyd_comma are presenting the very first opportunities to study the feature in the context of individual systems. Knowledge of the shared high- energy irradiation history of planets in such systems is a powerful tool that could provide crucial evidence towards determining which of the proposed mechanisms for sculpting the valley is correct. We propose XMM-Newton observations for two nearby TESS systems with planets either side of the valley comma  with the aim of measuring the XUV environment in which they reside. From these data comma  we will be able to investigate the photoevaporation and evolution history of the planets comma  and place them in the context of the wider population and the generation mechan
DOI: 10.57780/esa-pra8n64
title: 088419

description: The large number of radio-quiet thermally emitting isolated neutron stars openParINSsclosePar in our local volume suggests that they belong to a formerly neglected component of the overall population. At fainter fluxes comma  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 comma  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.
DOI: 10.57780/esa-pulyo7a
title: 088123

description: We propose to complete the mosaic of XMM observations in the nearby bright galaxy group NGC 5044. The two previous offset observations in the South and in the West showed a very low iron abundance comma  4 times less than that predicted by standard SNcc and SNIa enrichment models for rich clusters. The new XMM observations in the North and East will complete the mosaic and may point to an higher then expected uplifting of enriched gas by sloshing comma  advancing our understanding of metal enrichment in groups. If instead the low abundance will be confirmed it will be a challenge to current enrichment scenarios.
DOI: 10.57780/esa-puyaqk2
title: 086365

description: Following our successful discovery of a stable X-ray quasi-periodic oscillation openParQPOclosePar and an ultra fast outflow from the poster child tidal disruption flare openParTDFclosePar ASASSN-14li with XMM comma  we propose TOO observations openPar50+100 ksclosePar of a newly discovered TDF in cycle 19. The primary goals are to 1closePar search for a QPO whose period--combined with the black hole mass--will directly constrain the hole.s spin comma  2closePar measure the dependence of super-Eddington accretion flow properties on mass accretion rate using RGS spectra comma  and 3closePar search for a correlated behavior comma  and a time lag comma  between the X-ray and the UV light curves using OM data to measure the newly formed accretion disk.s size. All these science goals rely on highly sensitive comma  uninterrupted observations which can currently only be made by XMM.
DOI: 10.57780/esa-pvb6o1i
title: 086240

description: Recent discoveries of high-redshift quasars have provided new opportunities to investigate fundamental properties of the early Universe. X-ray observations of this quasar population are especially important for studies of black hole formation and the initial stages of feedback. We propose observations of two high-z radio-loud quasars with X-ray properties that represent the extremes of comparable sources to perform the followingdoublePoint openPar1closePar establish the formation of a Compton thick absorber at high redshift comma  openPar2closePar investigate the accretion disk structure via Fe K intensity and broadening. These results will provide an invaluable perspective on X-ray emission from exotic systems and establish the diversity in X-ray emission from young radio sources at the highest redshifts.
DOI: 10.57780/esa-q4xefpe
title: 084491

description: From a systematic study of the radio properties of luminous red quasars comma  we have found clear evidence that distinguishes them from normal quasars comma  suggesting that they are a special stage in AGN co-evolution with galaxies. To complement an on-going VLT-XSHOOTER program to explore the differences in the accretion disks of red quasars at z=1.5 comma  we propose new XMM- Newton observations of 5 carefully selected targets comma  which comma  in combination with an archival dataset of normal quasars comma  will allow a controlled study of openPar1closePar differences in nuclear obscuring columns comma  openPar2closePar intrinsic X-ray--optical spectral slope comma  and openPar3closePar coronal properties. With this comma  we aim to uncover whether red quasars have special accretion engines and mass outflow rates.
DOI: 10.57780/esa-q5fuk5g
title: 088272

description: We propose XMM-Newton observations of 3 sub-millimeter bright galaxies openParSMGsclosePar spanning z=2.1-3.6. These SMGs are gravitationally lensed by massive foreground galaxies comma  and each has an apparent luminosity >e14 Lsun comma  showing no sign for AGN in extensive multi-wavelength analysis. The combination of the sensitivity of XMM- Newton and the lensing magnification comma  as well as the intrinsic brightness of the SMGs comma  will enable us to study them individually. We will measure the collective X- ray emission from X-ray binaries and hence its ratio to the star formation rate for the first time and to potentially detect extremely obscured AGN over the rest-frame 2-35 keV range. This study will represent a key step in our multi- wavelength campaign to understand the working of such extreme galaxies.
DOI: 10.57780/esa-q5rfri3
title: 088350

description: We request a single comma  unphased comma  5-ks snapshot observation of the southern WR variable star WR 71. The binary status of this object is uncertain comma  but our recent observations show that its spectropolarimetric features resemble those of known WR+O binary systems. We seek to establish whether WR 71 displays bright X-ray emission similar to known colliding-wind binaries. If so comma  we will propose follow-up observations to characterize its X-ray spectrum and shed further light on its binary status.
DOI: 10.57780/esa-qinnhpf
title: 088058

description: The reason why the Herbig Ae-Be stars emit X-rays is not understood. A popular scenario is that the Herbig Ae-Be stars are not the sources of this emission comma  but rather the X-rays come from unresolved low-mass companion stars openParT-Tauri starsclosePar. However comma  our archival study shows that the most luminous Herbig Ae-Be stars can emit X-rays much above what is seen from T-Tauri stars comma  suggesting that -- at least for the most luminous  L>10elev3 comma L_keyOpen odotkeyClose   Herbig Ae-Be stars -- some other mechanism must be responsible for the X-ray emission. Only 8 Herbig Ae-Be stars in this key luminosity range have been observed in X-rays comma  and thus we propose a survey for XMM-Newton to measure the X-ray luminosities of a sample of 24 additional luminous Herbig Ae-Be stars.
DOI: 10.57780/esa-qnmxm5q
title: 089066

description: After a low state since 2002 comma  bright outbursts in 2016 were surrounded by intermediate activity openPar2015-2018closePar. Past observations have revealed a peak-shift towards higher energies hinting an EHBL-like nature comma  fast intranight and longterm variability as well as complex correlation patterns between wavebands. These features challenge a simple one-zone synchrotron self-Compton model. We request MAGIC observations coordinated with simultaneous multi- wavelength observations spanning a wide energy range comma  to understand the evolution of the broadband spectrum comma  compare different flux states comma  characterize variability patterns comma  study inter-band correlations and investigate the potential of the source as astrophysical neutrino emitter.
DOI: 10.57780/esa-qpwjbob
title: 086188

description: 2HWC J1928+177 is a bright Galactic gamma-ray source detected up to 100 TeV. It is a peculiar HAWC source comma  as VERITAS and HESS failed to detect its gamma-ray emission and there is no SNR or PWN nearby. At the HAWC source position comma  there is a variable X-ray source comma  potentially associated with a bright IR source. The non-thermal X-ray spectrum and the lack of aperiodic variability indicate that it is a TeV gamma-ray binary. XMM will determine the nature of the X-ray counterpart candidate comma  constrain its X-ray variability pattern for future TeV observations and search for other X-ray sources. If the X-ray counterpart candidate is not a TeV gamma-ray binary and no diffuse X-ray emission is found comma  the HAWC source would be the most remarkable dark accelerator with no counterpart below 10 TeV.
DOI: 10.57780/esa-qvlw7wp
title: 086320

description: High redshift quasars probe the formation and evolution of supermassive black holes openParSMBHsclosePar at early cosmic time. Here we propose XMM-Newton observations of J0439 at z = 6.5 comma  the most distant lensed quasar known to date. Aided by a magnification factor of virgul50 comma  it is the brightest quasar in optical and FIR at z>6 and unique target for the study of SMBH accretion at the reionization era comma  with typical BH mass but extremely high anticipated X-ray flux. With only 90 ks net exposure comma  a high quality X-ray spectrum with total counts of virgul8000 counts can be obtained comma  providing a high S-N X-ray view of an early SMBH for the first time. We will search for the ultra-fast outflows and measure the X-ray luminosity comma  spectral slope comma  coronal properties and optical-to-X-ray SED of this quasar.
DOI: 10.57780/esa-qw0qrfj
title: 085322

description: CCO pulsars are stable rotators with weak dipole B-fields and small spin-down rates comma  and are only detected in X-rays. We have been timing two CCO pulsars for 20 years. Surprisingly comma  we detected a glitch in the CCO 1E 1207.4-5209 comma  which is unprecedented for any pulsar with such a small spin-down rate. This has profound implications for both the B-field evolution of CCOs and the mechanisms that trigger glitches. We are starting to see similar features in the timing of the CCO PSR J0821-4300 in Puppis A comma  and propose here to continue timing it to distinguish between glitch activity and an alternative of accretion torque noise at a very low level from fall-back disks around CCOs.
DOI: 10.57780/esa-r2yea0z
title: 088602

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 comma  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 comma  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 comma  including multi-wavelength and time-domain investigations.
DOI: 10.57780/esa-r6nwjs1
title: 091199

description: #1 J003836.88-433709.8 openPartank replenishmentclosePar #5 J003836.88-433709.8 openPartank replenishmentclosePar #3 Mrk 817
DOI: 10.57780/esa-raxmflz
title: 086544

description: Accretion disc winds in X-ray binaries are not spherically symmetric structures comma  but their solid angle is difficult to determine because we usually only sample specific lines of sight. We can overcome this problem by studying Hercules X-1 comma  a binary with a precessing warped disc. Its disc wind is strongly varying within a precession cycle comma  indicating a small wind launching angle and strong vertical stratification. However comma  the available data originate from many precession cycles and could be plagued by long-term variability effects. With this proposal comma  we aim to finely sample the wind vertical structure within a single precession cycle comma  free of any long term deviations comma  to understand the wind launching angle comma  launching mechanism and to measure accurately the mass outflow rate.
DOI: 10.57780/esa-rdn0o0r
title: 088378

description: NGC 7793 P13 is one of the best targets among the ultra-luminous X-ray pulsars openParULXPsclosePar to study how neutron stars can sustain accretion rates orders of magnitude above their Eddington limit. It has strong pulsations and a known optical counterpart comma  which allowed us to determine the full orbital ephemeris using XMM- Newton data. In 2020 P13 entered an off-state comma  from which it is currently re- emerging. This gives us the unique opportunity to study the accretion flow as the accretion geometry is changing and will allow us to infer more physical parameter of the system comma  like the magnetic field. Therefore we propose to continue our successful campaign of AOs 17 19 to monitor the spectrum and pulse period of P13 and other sources in NGC 7793 throughout AO 20 with 2 40 ks observations.
DOI: 10.57780/esa-redq689
title: 084506

description: We propose 6 XMM observations of 25 ks each to explore the population of persistent LMXB among the faint hard X-ray sources discovered by INTEGRAL. Previous NuSTAR observations showed that diagnostics regularly used to exclude CV identifications may not be sufficient to conclusively identify hard X-ray sources. So comma  we could expect a significant number of magnetic CVs among identified persistent LMXBs. We will investigate the true nature of six poorly-known sources comma  and derive the main properties of these systems. These results will help to understand the LMXB population towards low fluxes comma  by correcting their surface density and-or studying the detailed X-ray properties of these individual sources.
DOI: 10.5281/zenodo.7805006
title: Il torrente Enza nelle carte Catasto Cessato Italiano dell'Archivio di Stato di Parma

description: Schedatura e metadatazione dei contenuti delle carte inerenti il corso del torrente Enza nel fondo archivistico <em>catasto cessato italiano</em> dell'Archivio di Stato di Parma
DOI: 10.57780/esa-rqxrfo7
title: 086284

description: We propose to observe 4 CH stars. These are carbon-enhanced Population II giant stars nearly all of which have white dwarf binaries comma  which are responsible for their unusual abundances. Based on their orbital parameters comma  distances comma  and stellar parameters comma  we have identified the best candidates for showing X-ray emission. None of these stars has yet been observed by anything more sensitive than ROSAT comma  but we anticipate that they should be detectable in a modest amount of XMM time. Discovering X-ray emission will open up a new understanding of the stellar winds from these stars comma  and of the otherwise hard-to-measure masses of their white dwarfs.
DOI: 10.5281/zenodo.7805005
title: Il torrente Enza nelle carte Catasto Cessato Italiano dell'Archivio di Stato di Parma

description: Schedatura e metadatazione dei contenuti delle carte inerenti il corso del torrente Enza nel fondo archivistico <em>catasto cessato italiano</em> dell'Archivio di Stato di Parma
DOI: 10.57780/esa-rrqidu2
title: 089081

description: The eROSITA instrument on-board Spectrum-Roentgen-Gamma openParSRGclosePar has performed the first imaging all-sky survey in the hard X-ray openPar2-10keVclosePar band. The final survey will be over 30 times deeper than previous hard X-ray surveys comma  yielding a large and very pure sample of AGN. Combining eROSITA data with observations from other multi-wavelength missions comma  a detailed picture of the AGN population can be constructed. We propose simultaneous NuSTAR+XMM follow up observations of a group of hard X-ray selected AGN observed with eROSITA. This pilot study will demonstrate the power of joint NuSTAR and XMM observations to break degeneracies present in different spectral models comma  motivating future joint NuSTAR comma  XMM and eROSITA investigations.
DOI: 10.57780/esa-rvqd7lk
title: 088376

description: We propose XMM-Newton observations of two middle-aged radio-quiet Fermi pulsars J0554+3107 and J0622+3749. The former is associated with the supernova remnant G179.0+2.6 which provides a great advantage for confident constraining its distance and evolution stage. Using Chandra comma  eROSITA and Swift shallow exposures we have found their X-ray counterparts. Thermal spectral components dominate their X-ray emission. Measurements of the parameters of these components are important for comparison with neutron star cooling theories and the study of fundamental properties of superdense nuclear matter inside the stars. However comma  any accurate conclusions are impossible due to low count statistics. We request for followup observations to study thermal emission from these pulsars.
DOI: 10.57780/esa-rvx058h
title: 086507

description: Red giants like Arcturus occupy a region in the X-ray Hertzsprung-Russell Diagram openParHRDclosePar known as the coronal graveyard. The physical cause for the sharp decline of X-ray emission beyond a so-called dividing line that separates X-ray emitting yellow giants from X-ray dark red giants is comma  despite decades of research comma  not finally answered. The recent X-ray detection of Arcturus with Chandra HRC-I motivates our request to obtain spectral information with XMM-Newton EPIC spectroscopy. An 80 ks exposure is sufficient to detect large absorbing column densities that may be expected if severe obscuration by layers above the giant.s corona cause the decrease in their observed X-ray luminosity.
DOI: 10.57780/esa-s3gcs8h
title: 086504

description: X-ray emission from young stars is a crucial agent in the formation of planetary systems comma  driving the chemistry and eventual dispersal of protoplanetary disks. K2.s 80-day monitoring of young stars in the Taurus star-forming region shows dramatic variability that points to changes in levels of accretion comma  circumstellar absorption and magnetic activity on timescales of days to weeks. Similar variability is expected in X-rays comma  causing important changes in the high-energy irradiation of planet-forming disks comma  but is largely unexplored in X-rays. Therefore comma  we propose the first large-scale X-ray monitoring campaign of well-characterized T Tauri stars with this cadence.
DOI: 10.57780/esa-sa9wix6
title: 084082

description: The LMC hosts the giant HII region 30 Doradus and the very massive stellar cluster R136. Observations suggest that a collision of large HI structures has triggered the formation of R136. The ROSAT LMC survey revealed a large diffuse structure extending from 30 Dor to the south comma  called the X-ray spur comma  which fills about 1-20 of the LMC and emits soft thermal X-rays. It seems to be located between the colliding HI gas comma  with the western edge coinciding with the location where the HI components meet. We propose observations of the X-ray spur with XMM-Newton to study the hot plasma with the aim to understand whether colliding large gas structures can trigger the formation of very massive stars and the heating of such a large part of the ISM.
DOI: 10.57780/esa-sfd5h2z
title: 086256

description: We propose a 100 ks XMM-Newton observation of J1641 comma  a z=6.047 QSO accreting at a super- Eddington rate openParlEdd=1.5closePar. Our exploratory Chandra observation of this object openParvirgul48 net countsclosePar reveals extremely bright X-ray emission comma  9 times brighter than the expectation based on its UV luminosity comma  in contrast to our knowledge of accretion at high Eddington ratio. Thanks to the extremely bright X-ray emission of the target comma  the new XMM-Newton observation will collect virgul400 net counts comma  which is the largest number of X-ray photons for a z>6 QSO comma  allowing us to constrain tightly the X- ray properties of this QSO comma  in particular its luminosity and photon index comma  and to check for variability.
DOI: 10.57780/esa-sgeryi3
title: 088604

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 comma  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 comma  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 comma  including multi-wavelength and time-domain investigations.
DOI: 10.57780/esa-shlgeer
title: 088240

description: Magnetars have gained favour as the engines of extreme supernova openParSNclosePar explosions comma  but direct observational evidence is lacking. A unique characteristic of a magnetar engine is non-thermal X-ray emission a few years after the explosion. This has so far eluded unambiguous detection due to the extremely high absorption by the ejecta itself before it expands sufficiently comma  and the rapid decay of the magnetar luminosity. To balance this trade-off comma  we propose to observe a small sample of SNe at intermediate epochs when the ejecta are expected to become transparent to soft X-rays. This allows us to detect or constrain the properties of the magnetar and shed light onto the engines of these extreme SNe.
DOI: 10.57780/esa-sj45ac3
title: 086309

description: The highest redshift quasars provide direct probes of the evolution of supermassive black holes openParSMBHsclosePar and the intergalactic medium at the earliest cosmic times. The discovery of a 7.8E8 Msun SMBH at z=7.54 openParJ1342+0928closePar put the strongest constrains on the seed BH and BH accretion history openParBanados et al. 2018closePar. Very recently comma  our team has found an even more extreme object comma  J1007 at z=7.5. J1007 is 1.8 times more luminous than J1342+0928 and hosts a SMBH with mass 1.6Eelev9 Msun comma  two times more massive than J1342+0928. The existence of J1007 posts the most significant challenge to our understanding of the formation of the earliest SMBHs. Here comma  we propose deep XMM-Newton observations to characterize the accretion properties of J1007 and investigate its formation and growth mechanisms.