A dataset provided by the European Space Agency

Name: Observing Aql X-1 to understand the hard X-ray emission from NS transients
Published: 2017-10-13T22:00:00Z

Proposal ID	074352
Title	Observing Aql X-1 to understand the hard X-ray emission from NS transients
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0743520201 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0743520301
DOI	https://doi.org/10.5270/esa-xie59bd
Principal Investigator, PI	Dr John Tomsick
Abstract	At low luminosities, the X-ray spectra of neutron star (NS) LMXB transientsoften contain two components: one is due to thermal emission from the NS surfaceand is reasonably well-understood, while the other is a hard power-law ofunknown origin. Recently, observations of Cen X-4 in quiescence with XMM-Newtonand the Nuclear Spectroscopic Telescope Array (NuSTAR) have provided the firstlook at the broadband spectrum. The hard component is sharply cutoff above 10keV and is consistent with a bremsstrahlung emission mechanism. We propose ajoint XMM-Newton, NuSTAR, and Swift Target of Opportunity program to observe AqlX-1 in order to compare the broadband spectrum from this system to that of CenX-4.
Publications	Classification of 4XMM-DR9 sources by machine learning \|Zhang, Yanxia, Zhao, Yongheng, \| MNRAS \| 503-5263 \| 2021 \| 2021MNRAS.503.5263Z \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.503.5263Z Robust constraints on feebly interacting particles using XMM-Newton \|Luque, Pedro De la Torre, Balaji, Shyam, \| PhRvD \| 109-L101305 \| 2024 \| 2024PhRvD.109j1305L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j1305L Multimessenger search for electrophilic feebly interacting particles from supernovae \|Luque, Pedro De la Torre, Balaji, Shyam, \| PhRvD \| 109-103028 \| 2024 \| 2024PhRvD.109j3028L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j3028L Importance of Cosmic-Ray Propagation on Sub-GeV Dark Matter Constraints \|De la Torre Luque, Pedro, Balaji, Shyam, \| ApJ \| 968-46 \| 2024 \| 2024ApJ...968...46D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...968...46D
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2016-09-28T15:45:52Z/2016-09-28T23:41:43Z
Version	PPS_NOT_AVAILABLE
Mission Description	The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact	https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published	2017-10-13T22:00:00Z
Keywords	"NuSTAR", "hard component", "hard xray emission", "swift target", "low luminosities", "XMM", "ns surface", "bremsstrahlung emission mechanism", "broadband spectrum", "aql x", "XMM-Newton", "hard power law", "xray spectra", "thermal emission", "cen x", "ns transients", "xmm newton"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr John Tomsick, 2017, 'Observing Aql X-1 to understand the hard X-ray emission from NS transients', PPS_NOT_AVAILABLE, European Space Agency, https://doi.org/10.5270/esa-xie59bd