A dataset provided by the European Space Agency

Name 086037
Title Probing Accretion Disks on Intermediate Size Scales: the Case of V630 Cas
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0860370101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0860370201

DOI https://doi.org/10.5270/esa-[xxxxxxx]
Author Dr Koji Mukai
Description V630 Cas is one of several long-period cataclysmic variables with rare, long-duration, dwarf nova outbursts. The characteristics of these outbursts are likely shaped by the large physical size of the accretion disks. Moreover, they often are luminous (> 10e33 ergs-s) X-ray sources in quiescence, severely challenging the disk instability model. Here we propose an XMM-Newton observation of V630 Cas in quiescence to constrain the white dwarf mass and the accretion rate, possibly adding it to the list of troubling systems with a high accretion rate white dwarf with a large, quiescent accretion disk. We also propose to obtain fast UV photometry with the OM, since UV flickering is a key diagnostic of accretion for the related class of symbiotic stars.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2020-06-28T20:07:12Z/2020-08-04T03:25:46Z
Version 18.02_20200221_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 2021-08-27T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2021-08-27T00:00:00Z, 086037, 18.02_20200221_1200. https://doi.org/10.5270/esa-[xxxxxxx]