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 |