A dataset provided by the European Space Agency

Name: X-ray investigation of the first gamma-ray emitter associated with a WR star
Published: 2009-06-06T00:00:00Z

Proposal ID	050553
Title	X-ray investigation of the first gamma-ray emitter associated with a WR star
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0505530101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0505530201
DOI	https://doi.org/10.5270/esa-df7hryl
Principal Investigator, PI	Mr Jean-Christophe Leyder
Abstract	A systematic search for hard X-ray and soft gamma-ray emission from Wolf-Rayet(WR) stars, performed using the ISGRI imager, led to the detection of WR 115(26-51 keV). This high-energy emission is expected to be produced by non-thermalrelativistic particles, through several possible mechanisms. However, it isstill unknown which of these proposed mechanisms is responsible for the observedemission, and whether the corresponding X-ray emission is of a thermal ornon-thermal origin. Therefore, we propose to observe this first gamma-rayemitter associated with a WR+O system. These observations of WR 115 withXMM-Newton will help to confirm the origin of the emission seen at higherenergies, and to pinpoint the emission mechanisms thanks to a thorough analysis of its X-ray spectrum.
Publications	An All-Sky Atlas of Radio/X-ray Associations \|Flesch E. \| PASA \| 27-283 \| 2010 \| 2010PASA...27..283F \| http://ui.adsabs.harvard.edu/#abs/2010PASA...27..283F Exospheric solar wind charge exchange as seen by XMM-Newton \|Carter J. A. Semba S. \| AN \| 333-313 \| 2012 \| 2012AN....333..313C \| http://ui.adsabs.harvard.edu/#abs/2012AN....333..313C Classification of X-Ray Sources in the XMM-Newton Serendipitous Source Catalog \|Lin Dacheng Webb Natalie A. \| ApJ \| 756-27 \| 2012 \| 2012ApJ...756...27L \| http://ui.adsabs.harvard.edu/#abs/2012ApJ...756...27L Hot stars observed by XMM-Newton. I. The catalog and the properties of OB stars \|Naze Y. \| A&A \| 506-1055 \| 2009 \| 2009A&A...506.1055N \| http://ui.adsabs.harvard.edu/#abs/2009A&A...506.1055N The diversity of quasars unified by accretion and orientation \|Shen Yue Ho Luis C. \| Natur \| 513-210 \| 2014 \| 2014Natur.513..210S \| http://ui.adsabs.harvard.edu/#abs/2014Natur.513..210S Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift \|Yershov V. N. \| Ap&SS \| 354-97 \| 2014 \| 2014Ap&SS.354...97Y \| http://ui.adsabs.harvard.edu/#abs/2014Ap&SS.354...97Y The Chandra ACIS Timing Survey Project: glimpsing a sample of faint X-ray pulsators \|Israel G. L. Esposito P. et al. \| MNRAS \| 462-4371 \| 2016 \| 2016MNRAS.462.4371I \| http://ui.adsabs.harvard.edu/#abs/2016MNRAS.462.4371I The Million Optical - Radio/X-ray Associations (MORX) Catalogue \|Flesch Eric W. \| PASA \| 33-52 \| 2016 \| 2016PASA...33...52F \| http://ui.adsabs.harvard.edu/#abs/2016PASA...33...52F Exploring the end states of massive stars using the X-ray emission of neutron stars and supernova remnants \|Prinz Tobias \| PhDT \| 0-305 \| 2013 \| 2013PhDT.......305P \| http://ui.adsabs.harvard.edu/#abs/2013PhDT.......305P Contribution of a Non-Thermal Component to the X-Ray Emission of OB Stars \|Ryspaeva E. B. Kholtygin A. F. \| AstBu \| 75-127 \| 2020 \| 2020AstBu..75..127R \| http://ui.adsabs.harvard.edu/#abs/2020AstBu..75..127R 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 4XMM J182531.5u2212144036: A new persistent Be/X-ray binary found within the XMM-Newton serendipitous survey \|Mason A. B. Norton A. J. et al. \| PASA \| 41-e008 \| 2024 \| 2024PASA...41....8M \| http://ui.adsabs.harvard.edu/#abs/2024PASA...41....8M From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez Antonio C. \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R 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 New 511 keV Line Data Provide Strongest sub-GeV Dark Matter Constraints \|De la Torre Luque Pedro Balaji Shyam \| ApJ \| 973-L6 \| 2024 \| 2024ApJ...973L...6D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...973L...6D
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2008-04-10T11:43:50Z/2008-04-11T04:13:48Z
Version	17.56_20190403_1200
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	2009-06-06T00:00:00Z
Last Update	2025-08-04
Keywords	"XMM", "thorough analysis", "systematic search", "hard xray", "XMM-Newton", "x ray investigation", "nonthermal origin", "gamma ray emitter", "wr 115", "isgri imager", "nonthermal relativistic particles", "energy emission", "xmm newton", "xray spectrum", "wr star", "xray emission"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Mr Jean-Christophe Leyder, 2009, 'X-ray investigation of the first gamma-ray emitter associated with a WR star', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-df7hryl