A dataset provided by the European Space Agency

Proposal ID 030684
Title The energy budget of soft X-ray selected polars
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0306840901
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0306841001

DOI https://doi.org/10.5270/esa-y1o3cq6
Principal Investigator, PI Dr Klaus Reinsch
Abstract Since the early days of X-ray astronomy one of the central questions in ourunderstanding of accretion onto magnetic white dwarfs in compact binaries iswhether their observed ratio between soft and hard X-ray emission is inaccordance with theoretical expectations or not. We propose to address thisissue with XMM-Newton observations of a sample of soft X-ray selected polarsfrom the ROSAT All-Sky Survey. The X-ray characteristics of our sample membersare complementary to the parameter space covered by observations of polars inthe XMM-Newton GTO programme. A detailed study of the spectral components, theirflux contributions, and the physical structure of the accretion regions in thesesystems will, therefore, provide new insight into this long-lasting problem.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2005-08-15T06:39:38Z/2005-08-22T17:06:19Z
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 2006-09-25T00:00:00Z
Last Update 2025-01-27
Keywords "hard xray emission", "spectral components", "compact binary", "xmm newton", "energy budget", "xray characteristics", "XMM-Newton", "xray astronomy", "magnetic white dwarfs", "ROSAT", "accretion region", "soft xray", "XMM", "flux contributions", "parameter space covered", "physical structure", "sky survey"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Klaus Reinsch, 2006, 'The energy budget of soft X-ray selected polars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-y1o3cq6