A dataset provided by the European Space Agency

Name 080229
Title V630 Cas and V1017 Sgr: Probing Accretion Disks on Intermediate Scales
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0802290201

DOI https://doi.org/10.5270/esa-v66ekzj
Author Dr Koji Mukai
Description V630 Cas and V1017 Sgr are 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. They also
appear to be luminous (> 10e33 ergs/s) X-ray sources in quiescence, severely
challenging the disk instability model. Here we propose XMM-Newton observations
of these objects to obtain X-ray spectra of sufficient quality to constrain the
white dwarf mass and the accretion rate. We also propose to obtain fast UV
photometry with the OM, since UV flickering has emerged as 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 2018-03-23T03:26:04Z/2018-03-23T14:42:45Z
Version 17.56_20190403_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 2019-04-19T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Koji Mukai, 2019, 080229, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-v66ekzj