A dataset provided by the European Space Agency

Name: Magnetic accretion in high-accretion rate polars
Published: 2016-04-22T22:00:00Z

Proposal ID	074418
Title	Magnetic accretion in high-accretion rate polars
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0744180801
DOI	https://doi.org/10.5270/esa-0oa37zu
Principal Investigator, PI	Dr Axel Schwope
Abstract	The spectral components of polars -- strongly magnetic CVs -- are barelydisentangled without sufficient spectral coverage. XMM-Newton plus NuSTAR cansolve the riddle but the frequent low states of the brightest members preventedsystematic studies of high-accretion rate polars (HARPs). We thus began TOO-likeXMM-Newton observations of the brightest systems in their high states andpropose to continue in AO13 with one further trigger. We will investigate thephysics of the hard X-ray emitting shock, the heated accretion pole cap, theatmosphere of the white dwarf, the absorption in the shock and in the flow, thelines in the accretion flow and the reflection from the white dwarf byphase-resolved X-ray spectroscopy and high-speed OM-photometry.
Publications	The various accretion modes of AM Herculis: Clues from multi-wavelength observations in high accretion states \|Schwope, A. D., Worpel, H., et al. \| A&A \| 642-134 \| 2020 \| 2020A&A...642A.134S \| http://ui.adsabs.harvard.edu/#abs/2020A&A...642A.134S 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	2015-04-06T02:36:01Z/2015-04-06T15:06:01Z
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	2016-04-22T22:00:00Z
Keywords	"spectral coverage", "NuSTAR", "barely disentangled", "prevented systematic", "XMM", "xmm newton", "magnetic cvs", "frequent low", "magnetic accretion", "spectral components", "white dwarf", "accretion flow", "XMM-Newton", "brightest systems", "accretion rate polars", "speed om photometry"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Axel Schwope, 2016, 'Magnetic accretion in high-accretion rate polars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-0oa37zu