A dataset provided by the European Space Agency

Name 074061
Title First View of the Accretion Disks in Normal Symbiotic Stars


DOI https://doi.org/10.5270/esa-gqa432k
Author Dr Jennifer Sokoloski
Description Accretion disks in symbiotic stars are often hidden by the optical emission from
the red-giant companion, UV from the ionized nebula, and soft X-rays from
colliding winds. A survey of symbiotic with Swift, however, has revealed that
the accretion disk dominates above 2 keV and in the rapidly variable portion of
the UV. To determine the basic properties of the large, wind- fed accretion
disks around the white dwarfs in symbiotic, we propose X-ray and UV observations
with XMM-Newton of the two most promising targets from our Swift survey. Only
XMM can provide the sensitive, contiguous, multi-wavelength observations to
determine the accretion rates, characterize the properties of the UV flickering
and test our conclusion that hard X-rays originate in the innermost accretion disk.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2014-08-19T17:44:35Z/2014-10-27T06:17:37Z
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 2015-11-14T23:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Jennifer Sokoloski, 2015, 074061, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-gqa432k