A dataset provided by the European Space Agency

Name: Unveiling the X-ray faint intermediate polars- source of the Galactic Ridge X-ra
Published: 2020-04-16T22:00:00Z

Proposal ID	082331
Title	Unveiling the X-ray faint intermediate polars- source of the Galactic Ridge X-ra
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0823310801
DOI	https://doi.org/10.5270/esa-hi1go16
Principal Investigator, PI	Dr Hauke Worpel
Abstract	The poorly-understood Galactic Ridge X-ray Emission (GRXE) is an X-raybackground concentrated around the Galactic plane, primarily composed ofdifficult to resolve discrete sources. The most promising candidates for itsorigin above a few keV are the intermediate polars (IPs), a class of magneticcataclysmic variables (CVs), consisting of a strongly magnetic white dwarf and aRoche-lobe filling companion. Most of the 49 confirmed IPs are X-ray bright (L_Xvirgul 10^33 erg/s) but there may be a more numerous undiscovered population offainter (L_X virgul 10^31 erg /s) IPs. We propose to observe 8 underluminous IPcandidates to confirm their nature as IPs, to search for the underluminous IPpopulation, detect spin period
Publications	XMM-Newton observations of ^en intermediate polars and possible candidates \|Worpel, H., Schwope, A. D., et al. \| A&A \| 639-17 \| 2020 \| 2020A&A...639A..17W \| http://ui.adsabs.harvard.edu/#abs/2020A&A...639A..17W 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
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2019-03-18T04:57:50Z/2019-03-18T16:02:50Z
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	2020-04-16T22:00:00Z
Keywords	"xray bright l_x", "promising candidates", "intermediate polars ips", "fainter l_x", "xray background concentrated", "resolve discrete sources", "spin period", "numerous undiscovered population", "galactic plane", "underluminous ip candidates", "magnetic white dwarf", "underluminous ip population", "primarily composed"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Hauke Worpel, 2020, 'Unveiling the X-ray faint intermediate polars- source of the Galactic Ridge X-ra', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-hi1go16