| Proposal ID | 020081 |
| Title | IS THE X-RAY EMISSION FROM THE CTTS XZ TAU ACCRETION DRIVEN |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0200810201 |
| 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 |
| Last Update | 2026-03-04 |
| Keywords | "xray emission mechanism", "mainly accretion driven", "XMM", "xz tau", "xmm newton", "XMM-Newton", "rotational modulation", "xray emission", "rotational periods", "hydrogen column density", "tauri stars" |
| 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 |