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Proposal ID 020081
Title IS THE X-RAY EMISSION FROM THE CTTS XZ TAU ACCRETION DRIVEN
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DOI https://doi.org/10.5270/esa-3cdv3vs
Principal Investigator, PI Dr GIOVANNA GIARDINO
Abstract In order to address the question of the origin of X-ray emission in Classical TTauri stars we propose an XMM-Newton observation of XZ Tau. We propose tomonitor the source over 6 days to follow the variation of hydrogen columndensity in front of the star, over two rotational periods of the star. This willallow a rotational modulation of the hydrogen column density to be detected, ifpresent, and therefore unambiguously identify the existence on XZ Tau of aco-rotating accretion stream shadowing an X-ray bright hot spot. This will bestrong evidence for the X-ray emission mechanism being mainly accretion driven.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2004-03-04T16:02:29Z/2004-03-10T04:49:43Z
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 2005-04-30T00:00:00Z
Keywords "XMM", "xray emission mechanism", "mainly accretion driven", "XMM-Newton", "xray emission", "tauri stars", "rotational modulation", "xz tau", "hydrogen column density", "rotational periods", "xmm newton"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr GIOVANNA GIARDINO, 2005, 'IS THE X-RAY EMISSION FROM THE CTTS XZ TAU ACCRETION DRIVEN', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-3cdv3vs