cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57780/esa-oe5qmob
title: 090471

description: Every major modern hydrodynamical simulation suite now includes a prescription for AGN feedback to reproduce realistic populations of galaxies. However these simulations generally do not offer much insight into the nature of feedback. On the other hand the hot gas content of galaxy groups is highly sensitive to the implemented feedback scheme: the predicted gas fraction differs by an order of magnitude from one simulation to another. Here we propose to observe a sample of 40 galaxy groups exhibiting X-ray emission on scales  and amp amp amp gt 12 with the aim of providing benchmark thermodynamic and gas fraction profiles out to R500 without requiring any extrapolation. The proposed program will gather a well controlled sample of systems spanning an order of magnitude in mass 1e13  and amp amp amp lt  M500  and amp amp amp lt  1e14 Mo. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-p31uxna
title: 091308

description: Following a series of remarkable recent discoveries we now know that some of the most luminous members of the ultraluminous X-ray source (ULX) population are actually powered by highly super-Eddington pulsars (i.e. neutron stars) making them the most extreme sustained accretors known. Six such systems are now known but NGC5907 ULX1 stands out as the most luminous peaking at Lx virgul 1e41 erg/s. Here we propose a pair of simultaneous NuSTAR+XMM observations of NGC5907 ULX1. These will allow us to continue to track the long-term evolution of the neutron star spin help investigate why the pulsations are transient in some ULX pulsars and explore the nature of the long-term 78d X-ray period present in this system. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pe99k2x
title: 090447

description: We propose 880ks XMM-Newton observations of the most massive bright high-redshift galaxy clusters in the Universe detected in the first All-Sky Survey. The XMM-Newton data will enable detailed studies of the density and temperature structure of the intracluster medium (ICM) in these clusters of galaxies. Precise ICM mass measurements and temperature information will enhance the pioneering eROSITA studies of the evolution of baryons in their deep potential wells by constraining the properties of this crucial massive cluster population. Furthermore by combining the eROSITA data with the proposed XMM-Newton follow-up observations we will constrain the detailed structure formation process as a function of mass redshift and environment as well as understanding the (an-)isotropy of the Universe. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pfflva2
title: 088609

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: 10.25549/examiner-c44-11335
title: Seaplane tender USS Gardiners Bay, 1951

description: 18 images. Seaplane tender USS Gardiners Bay, 24 July 1951. Captain Frank G. Raysbrook (Commanding Officer); Commander J.R. MacKroth (Executive Officer).; More descriptive information with originals.
DOI: 10.57780/esa-pl7dlab
title: 091360

description: Low mass ( and amp amp amp lt 10^6Msun) AGN are important not just for understanding the evolution of supermassive black holes but they vary rapidly through accretion states allowing the study of physical processes which are unaccessible with larger mass AGN. NGC 4395 (virgul10^5Msun) is the brightest and most variable low mass AGN. Previous observations suggest that the X-ray spectrum shows both harder when brighter and softer when brighter behaviour. This transition is not seen in any other single AGN and may represent a change from coronal synchrotron to disc black body seed photons. This scenario cannot be confirmed without Nustara??s high energy band. Thus we propose 6x50 ks NuSTAR+6x25 XMM simultaneous pointings. We will also coordinate with HiPERCAM@GTC to obtain precise lags to probe the outer disc. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pupcvrm
title: 090441

description: Epsilon Lupi is the only close binary star system where both massive main-sequence components have strong magnetic fields. Thus it is a natural laboratory for the study of the influence of magnetism on binarity. We have discovered radio emissions from this system that revealed double-peaked enhancement near the periastron phase as well as pseudo-cyclic variations across the orbital phase. The double-peak enhancement is likely to be an effect of magnetospheric interaction. If this scenario is correct one would also expect X-ray counterparts to the radio enhancements in the form of enhancement in the X-ray light curve at similar phases. Thus we request 55 ks of XMM-Newton time to search for the evidence of magnetospheric interaction and orbital variability in our unique target. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-q07rtyv
title: 090077

description: PSR J2215+5135 appears to be one of the heaviest neutron stars known.  However the precise mass depends on the model-dependent measurement of the orbital inclination. Our project constrains this value in two ways by measuring the structure of the orbital X-ray light curve peaks caused by relativistic particles in the intrabinary shock and by obtaining a clear ultraviolet  light curve of the pulsar.s heated companion. The measurements also probe the shock geometry flaring activity and particle acceleration and test  whether the pulsar can complete evaporate of its companion before it spins down. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-qhus63q
title: 086419

description: The discovery of three millisecond pulsars (MSPs) swinging between an accretion and rotation powered states has provided evidence for the existence of a peculiar evolutionary phase of binary pulsars. These sources are known as .transitional. MSPs (tMSPs). We have recently identified the source CXOU J110926.4-650224 as a strong tMSP candidate. We propose simultaneous high-time resolution observations of this system using XMM-Newton (20 ks) and the VLT HAWK-I (3.5 hr) to: (i) search for correlations or anti-correlations between the X-ray and near infrared emissions down to time scales of tens of seconds and (ii) understand the mechanism of mode switching and (iii) whether it operates in all the tMSPs. [truncated! Please see actual data for full text]
DOI: 10.25549/examiner-c44-72992
title: Train wreck inquest, 1956

description: 26 images. Train wreck inquest, 3 February 1956. John England (Agent for Santa Fe); S. Ernest Roll; David Gardner (Engineer for Santa Fe); Frank Parrish (train engineer-defendant); inquest jury; Linwood Lester; Master Sergeant Virgil Connor; Malcomb Hobbs (sailor); Private James D. Lance; F.N. Stuppi (Santa Fe railroad); Private Richard V. Jackson; Arthur Murdock; Adolf Alexander; Virgil Cockrell; Win Stanley (Deputy Coroner); George Spickard (conductor); Homer Smith (fireman); William Hines (brakeman). (Sleeve reads: A-11701-025).; Caption slip reads: "Photographer: Monteverde. Date: 1956-02-03. Assignment: Train wreck. Jurors front row, (l to r) Ronald R. Ketcham, Fred A. McCanlies, W. Herbert Allen, C.S. McLean, [...] D. Ezell; back row, l to r. Homer L. Garrett, Earl Vaugh, [...] Sweeney, A.W. Anderson, Paul Sheely. Jury L to R. 31: Shows all witnesses seated; engineer in front center. 32/29/30: Blue ribbon jury. 8: Witness sailor Malcolmb Hobbs in back is Deputy Coroner Win Stanley - Ernie Roll. 7/21/22: Shows general scene of Santa Fe witness David Gardner, Division Eng inner & Ernie Roll pointing at rail map etc. Jury in right of pix. 27/28: Shows Ernie Roll handing photo of tracks to jury. David Gardner Santa Fe Division engineer explains to jury. 26: General view shows Arthur Murdock on stand - jury on right Adolph Alexander questioning from left. 25: L to R John England, special agent - Engineer Frank Parrish & Special Agent Virgil Cockrell of Santa Fe. 38/37: Train engineer Frank Parrish as he listens intently to testimony. 39: L to R. David Gardner explains meaning of "flange" marks on rail section (not from actual scene) Ernie Roll conducts questions. 23: Mr. F.N. Stuppi, Asst. Gen. Mgr. of Santa Fe, points to chart showing speed limits along route in question. 24: Arthur Murdock, road foreman of engineers. 19/20: Long shot shows entire room shown, Ernie Roll questioning Arthur Murdock of Santa Fe. 33/34: Geo Spickard, conductor & Homer Smith - fireman. 6: William Hines, brakeman. 5: Frank Parrish, engineer. 3: Linwood Lester, passenger on train. 4: M/Sgt. Vigril L. Connor, U.S.M.C. passenger. 14: Pvt. James D. Lance passenger from Camp Pendelton Marine base. 13: Pvt. Richard V. Jackson U.S.M.C. 50: F.N. Stuppi Asst Gen Mgr of Santa Fe. 49: F.N. Stuppi & Ernie Roll, D.A. - Roll holds Santa Fe time table & rules for employees
DOI: 10.57780/esa-qzq0ky9
title: 088205

description: The Magellanic Clouds are an ideal site to study super-soft X-ray sources given their moderate and well known distances with low Galactic foreground absorption. In the course of the eROSITA all-sky surveys the MCs are scanned frequently. This provides the unique opportunity to detect new SSS in the full Magellanic System as already demonstrated during the first survey. We propose three triggered XMM observations of 20 ks each of new or unexplored SSS in the MS. Our goal is to study their spectral and temporal properties in detail and identify their nature by combining the existing multi-wavelength follow-up facilities we have with the SALT transients collaboration and the GROND on the ESO/MPG telescope. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-r3yvh51
title: 090322

description: We propose to observe nearby repeating fast radio bursts (FRBs) with XMM Newton to probe for X-ray counterparts to radio bursts. This will test whether they are consistent with predictions from young magnetar progenitor theories. Recent evidence such as the detection of a FRB-like burst from the Galactic magnetar SGR 1935+2154 suggests that magnetars may be the engines of at least some FRBs. We will compare X-ray observables like burst luminosity and temporal properties to those predicted from magnetar progenitor theories. To probe as deep as possible we will provide fully simultaneous radio coverage to provide times of radio bursts during the XMM observations. This will allow us to search for X-ray bursts in as narrow a time and spatial window as possible. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-rawfzdl
title: 091439

description: We propose a joint 100 ks Chandra and 30 ks XMM-Newton study of the low-metallicity galaxy NGC3109. By combining unprecedented spatial resolution of Chandra with the soft XMM-Newton response we will obtain a census of X-ray binaries probe the nature of accreting sources and find hot bubbles in this template low-metallicity galaxy. New Chandra observations will complement the HST observations of massive stars in NGC3109. Obtaining first robust measurements of X-ray sources in NGC3109 is a necessary next step to progress in our understanding of massive binary star evolution and feedback at low-metallicities and by proxy in early cosmic times. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-ri2y89n
title: 091019

description: For SDSSJ1430+2303
DOI: 10.57780/esa-s5jwkjs
title: 091240

description: After a 10-year hiatus Mrk 590 has partially re-ignited with repeated major X-ray and UV flare-ups captured by Swift monitoring. We wish to seize this rare opportunity to document the onset of AGN activity as it occurs since this can lead to significant insight on the long-standing issue of how AGNs are triggered and fueled. We will use approved Swift XRT monitoring to trigger up to 4 single-visit NuSTAR observations of which up to 3 are joint with XMM (or NICER). Together these data are needed to determine if a standard thin accretion disk is being built up as the AGN turns on (and then characterize this event) or if alternate physics are at play. 1 [truncated! Please see actual data for full text]
DOI: 10.25549/examiner-c44-72991
title: Train wreck inquest, 1956

description: 26 images. Train wreck inquest, 3 February 1956. John England (Agent for Santa Fe); S. Ernest Roll; David Gardner (Engineer for Santa Fe); Frank Parrish (train engineer-defendant); inquest jury; Linwood Lester; Master Sergeant Virgil Connor; Malcomb Hobbs (sailor); Private James D. Lance; F.N. Stuppi (Santa Fe railroad); Private Richard V. Jackson; Arthur Murdock; Adolf Alexander; Virgil Cockrell; Win Stanley (Deputy Coroner); George Spickard (conductor); Homer Smith (fireman); William Hines (brakeman). (Sleeve reads: A-11701-025).; Caption slip reads: "Photographer: Monteverde. Date: 1956-02-03. Assignment: Train wreck. Jurors front row, (l to r) Ronald R. Ketcham, Fred A. McCanlies, W. Herbert Allen, C.S. McLean, [...] D. Ezell; back row, l to r. Homer L. Garrett, Earl Vaugh, [...] Sweeney, A.W. Anderson, Paul Sheely. Jury L to R. 31: Shows all witnesses seated; engineer in front center. 32/29/30: Blue ribbon jury. 8: Witness sailor Malcolmb Hobbs in back is Deputy Coroner Win Stanley - Ernie Roll. 7/21/22: Shows general scene of Santa Fe witness David Gardner, Division Eng inner & Ernie Roll pointing at rail map etc. Jury in right of pix. 27/28: Shows Ernie Roll handing photo of tracks to jury. David Gardner Santa Fe Division engineer explains to jury. 26: General view shows Arthur Murdock on stand - jury on right Adolph Alexander questioning from left. 25: L to R John England, special agent - Engineer Frank Parrish & Special Agent Virgil Cockrell of Santa Fe. 38/37: Train engineer Frank Parrish as he listens intently to testimony. 39: L to R. David Gardner explains meaning of "flange" marks on rail section (not from actual scene) Ernie Roll conducts questions. 23: Mr. F.N. Stuppi, Asst. Gen. Mgr. of Santa Fe, points to chart showing speed limits along route in question. 24: Arthur Murdock, road foreman of engineers. 19/20: Long shot shows entire room shown, Ernie Roll questioning Arthur Murdock of Santa Fe. 33/34: Geo Spickard, conductor & Homer Smith - fireman. 6: William Hines, brakeman. 5: Frank Parrish, engineer. 3: Linwood Lester, passenger on train. 4: M/Sgt. Vigril L. Connor, U.S.M.C. passenger. 14: Pvt. James D. Lance passenger from Camp Pendelton Marine base. 13: Pvt. Richard V. Jackson U.S.M.C. 50: F.N. Stuppi Asst Gen Mgr of Santa Fe. 49: F.N. Stuppi & Ernie Roll, D.A. - Roll holds Santa Fe time table & rules for employees
DOI: 10.57780/esa-syocmng
title: 090461

description: We propose offset pointings of two intermediate ( M_{500} =1.5 - 3.5 times 10^{14} {rm M}_odot ) mass clusters MKW3s and A2589 to derive metal abundances up to  0.9 R_{500}  and   0.7 R_{500}  respectively a challenging distance for systems with these masses. By combining X-ray data with optical data we will derive the iron-yields for these systems and compare them with expected iron yields from supernova rates. Since intermediate mass clusters represent a bridge between galaxy groups and massive galaxy clusters this study will help to solve the conundrum of the different behavior of galaxy groups which seem to match expected values from supernovae and massive clusters which feature a discrepancy by a factor  3-7 . [truncated! Please see actual data for full text]
DOI: 10.57780/esa-syu2fk1
title: 090256

description: In XMM/AO18 we embarked on a project to reveal previously unrecognized magnetic CVs based on common (though not universal) optical fingerprints. This has led to the successful discovery of a low luminosity intermediate polar (LLIP) which we are continuing in our AO20 program. In this proposal we request fullfill observation of a sample of supposed dwarf novae with high Fx/Fopt ratios and high X-ray luminosity making them excellent candidates to be previously unrecognized LLIPs. If many of our targets are confirmed as LLIPs their space density may be comparable to or higher than typical intermediate polars (IPs) that are more X-ray luminous. LLIPs may well be the missing links in the evolution of magnetic white dwarfs in interacting binaries. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-t6l6tb9
title: 088284

description: We aim to determine the frequency and characteristics of X-ray emission from RV Tau variables stars. Only one RV Tau variable star has been targeted by modern X- ray observatories and its detected X-ray emission is surprising and difficult to understand. We request 140 ks to study a pilot sample of four RV Tau variable stars in order to establish if X-ray emission is ubiquitous amongst these luminous and pulsating stars. The requested observations would determine the characteristics of any X-ray emission and help identify the origin of the X-ray emission. As known and suspected binary systems discovering X-ray emission from these stars can open new windows into binary evolution at their intermediate stages. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-teih14l
title: 089320

description: Since 2016 the IceCube collaboration is distributing alerts of high-energy neutrino detections in order to allow follow-up searches for possible counterparts. Finding them would provide important clues on the origin of the high-energy neutrinos and on the nature of the high-energy cosmic ray accelerators. We ask for pointed ToO observation of the High Energy Starting Events and Extremely High Energy neutrinos detected by IceCube and reported in GCNs. We will employ the best available knowledge of the INTEGRAL instruments to hunt for a possible hard X-ray and gamma-ray counterparts. In absence of a detection we will set the most stringent upper limits. We intend to promptly communicate the results of our ToOs to the general community thus supporting additional multiwavelength follow-ups. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-tfgvqfz
title: 090313

description: We propose a 122 ks XMM-Newton observation of the merging galaxy cluster MACS J1752+4440. The system is characterized by remarkable double bullets in X-ray and the symmetric giant double radio relics which together indicate a high-speed post-merger resembling the Bullet Cluster however observed at a later phase. This unique combination offers a rare opportunity to address long-standing puzzles in cluster mergers including generation/propagation of plasma shocks and particle acceleration. The observation will enable us to 1) measure X-ray shocks at the location of the relics 2) reveal thermodynamic properties of the double bullets 3) constrain the merger scenario and 4) quantify the re-acceleration efficiency of diffusive shock acceleration. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-tlu97u5
title: 089040

description: Accreting pulsar SMC X-1 exhibits a superorbital cycle likely caused by a warped precessing accretion disk which drives behaviors like pulsation transience and varying spectral obscuration levels. The superorbital cycle is typically virgul55 days but has excursions driven by instability in the disk geometry where the period increases to 44 days. There exists no  broad-band spectral and timing coverage of superorbital excursion. This  proposal asks for simultaneous NuSTAR and XMM observations to sample the upcoming 2022 excursion. A unique opportunity to use tomography to probe the fluctuating disk geometry and investigate the effect of excursion on obscuration levels pulse shape and pulsation transience. [truncated! Please see actual data for full text]
DOI: 10.25549/examiner-c44-72984
title: Train wreck inquest, 1956

description: 26 images. Train wreck inquest, 3 February 1956. John England (Agent for Santa Fe); S. Ernest Roll; David Gardner (Engineer for Santa Fe); Frank Parrish (train engineer-defendant); inquest jury; Linwood Lester; Master Sergeant Virgil Connor; Malcomb Hobbs (sailor); Private James D. Lance; F.N. Stuppi (Santa Fe railroad); Private Richard V. Jackson; Arthur Murdock; Adolf Alexander; Virgil Cockrell; Win Stanley (Deputy Coroner); George Spickard (conductor); Homer Smith (fireman); William Hines (brakeman). (Sleeve reads: A-11701-025).; Caption slip reads: "Photographer: Monteverde. Date: 1956-02-03. Assignment: Train wreck. Jurors front row, (l to r) Ronald R. Ketcham, Fred A. McCanlies, W. Herbert Allen, C.S. McLean, [...] D. Ezell; back row, l to r. Homer L. Garrett, Earl Vaugh, [...] Sweeney, A.W. Anderson, Paul Sheely. Jury L to R. 31: Shows all witnesses seated; engineer in front center. 32/29/30: Blue ribbon jury. 8: Witness sailor Malcolmb Hobbs in back is Deputy Coroner Win Stanley - Ernie Roll. 7/21/22: Shows general scene of Santa Fe witness David Gardner, Division Eng inner & Ernie Roll pointing at rail map etc. Jury in right of pix. 27/28: Shows Ernie Roll handing photo of tracks to jury. David Gardner Santa Fe Division engineer explains to jury. 26: General view shows Arthur Murdock on stand - jury on right Adolph Alexander questioning from left. 25: L to R John England, special agent - Engineer Frank Parrish & Special Agent Virgil Cockrell of Santa Fe. 38/37: Train engineer Frank Parrish as he listens intently to testimony. 39: L to R. David Gardner explains meaning of "flange" marks on rail section (not from actual scene) Ernie Roll conducts questions. 23: Mr. F.N. Stuppi, Asst. Gen. Mgr. of Santa Fe, points to chart showing speed limits along route in question. 24: Arthur Murdock, road foreman of engineers. 19/20: Long shot shows entire room shown, Ernie Roll questioning Arthur Murdock of Santa Fe. 33/34: Geo Spickard, conductor & Homer Smith - fireman. 6: William Hines, brakeman. 5: Frank Parrish, engineer. 3: Linwood Lester, passenger on train. 4: M/Sgt. Vigril L. Connor, U.S.M.C. passenger. 14: Pvt. James D. Lance passenger from Camp Pendelton Marine base. 13: Pvt. Richard V. Jackson U.S.M.C. 50: F.N. Stuppi Asst Gen Mgr of Santa Fe. 49: F.N. Stuppi & Ernie Roll, D.A. - Roll holds Santa Fe time table & rules for employees
DOI: 10.57780/esa-tvvbs4e
title: 093219

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]