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 |
DOI | https://doi.org/10.57780/esa-0epxgxl |
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, Dr Koji Mukai, 2021, 086037, 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-0epxgxl |