A dataset provided by the European Space Agency

Name: The Fastest Stellar Winds as New Sources of Hard X-rays
Published: 2009-06-28T00:00:00Z

Proposal ID	055022
Title	The Fastest Stellar Winds as New Sources of Hard X-rays
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0550220101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0550220201
DOI	https://doi.org/10.5270/esa-nx8i1ny
Principal Investigator, PI	Dr Lidia Oskinova
Abstract	Wolf-Rayet stars of the oxygen subclass (WO) are massive stars in their terminalevolutionary stage short before exploding as supernova or GRB. We predict thatWO stars emit hard X-rays. They posses the fastest stellar winds among allnon-degenerate stars, with velocities of 2 per cent of the speed of light.Strong shocks should develop in these winds and heat the plasma to 100 MK,resulting in X-ray emission. We request a 75 ksec observation of the closest WOstar, WR 142, to obtain EPIC spectra and measure the parameters of the hotplasma, as a stringent test for the theory of X-ray production in hot starwinds. In addition, our FoV will comprise 16 neighbouring OB stars. With theirX-ray spectra we will probe the causality behind the correlation between bolometric and X-ray luminosity.
Publications	Discovery of X-Ray Emission from the Wolf-Rayet Star WR 142 of Oxygen Subtype \|Oskinova L. M. Hamann W.-R. et al. \| ApJ \| 693-44 \| 2009 \| 2009ApJ...693L..44O \| http://ui.adsabs.harvard.edu/#abs/2009ApJ...693L..44O Hard X-Ray Emission in the Star-Forming Region ON 2: Discovery with XMM-Newton \|Oskinova L. M. Gruendl R. A. et al. \| ApJ \| 712-763 \| 2010 \| 2010ApJ...712..763O \| http://ui.adsabs.harvard.edu/#abs/2010ApJ...712..763O 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 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 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 Chandra Observations of the Massive Star-forming Region Onsala 2 \|Skinner Stephen L. Sokal Kimberly R. \| ApJ \| 871-116 \| 2019 \| 2019ApJ...871..116S \| http://ui.adsabs.harvard.edu/#abs/2019ApJ...871..116S 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 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
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2008-05-28T08:29:43Z/2008-05-31T00:09:15Z
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	2009-06-28T00:00:00Z
Last Update	2025-01-27
Keywords	"EPIC", "stringent test", "epic spectra", "neighbouring ob stars", "hard xray", "oxygen subclass wo", "xray production", "wolf rayet stars", "fastest stellar winds", "wr 142", "hot plasma", "massive stars", "degenerate stars", "xray emission", "closest wo star", "xray spectra", "xray luminosity", "hot star winds"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Lidia Oskinova, 2009, 'The Fastest Stellar Winds as New Sources of Hard X-rays', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-nx8i1ny