Proposal ID | 074061 |
Title | First View of the Accretion Disks in Normal Symbiotic Stars |
Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0740610101 |
DOI | https://doi.org/10.5270/esa-gqa432k |
Principal Investigator, PI | Dr Jennifer Sokoloski |
Abstract | Accretion disks in symbiotic stars are often hidden by the optical emission fromthe red-giant companion, UV from the ionized nebula, and soft X-rays fromcolliding winds. A survey of symbiotic with Swift, however, has revealed thatthe accretion disk dominates above 2 keV and in the rapidly variable portion ofthe UV. To determine the basic properties of the large, wind- fed accretiondisks around the white dwarfs in symbiotic, we propose X-ray and UV observationswith XMM-Newton of the two most promising targets from our Swift survey. OnlyXMM can provide the sensitive, contiguous, multi-wavelength observations todetermine the accretion rates, characterize the properties of the UV flickeringand test our conclusion that hard X-rays originate in the innermost accretion disk. |
Publications |
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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 Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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 |
Last Update | 2025-01-27 |
Keywords | "basic properties", "accretion disk dominates", "xmm newton", "uv flickering", "symbiotic stars", "swift survey", "hard xray", "accretion rates", "multi wavelength", "ionized nebula", "innermost accretion disk", "XMM-Newton", "soft xray", "normal symbiotic stars", "red giant companion", "white dwarfs", "promising targets", "optical emission", "XMM", "accretion dis", "colliding winds" |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Dr Jennifer Sokoloski, 2015, 'First View of the Accretion Disks in Normal Symbiotic Stars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-gqa432k |