| Proposal ID | 074450 |
| Title | Magnetically funneled accretion challenged by X-rays from T Tauri |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0744500201 |
| DOI | https://doi.org/10.5270/esa-u05w38p |
| Principal Investigator, PI | Dr Christian Schneider |
| Abstract | Young, forming stars accrete matter along magnetic field lines from the inneredge of the protoplanetary disk. The impact of this material on the stellarsurface produces an X-ray emitting plasma of high density usually confirmed byX-ray observations. However, our target, the X-ray bright classical T Tauri star(CTTS) T Tau deviates strongly from this picture. In particular, the density ofthe cool plasma usually associated with the accretion process is too low to becompatible with the standard accretion scenario. We propose to obtain three 40ks exposures to test whether this is due to a transient phenomenon or if T Taupermanently differs from established CTTS properties. In that case, a differentaccretion type and a different soft X-ray generating process must be present. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2014-08-15T08:47:09Z/2014-09-07T04:47:40Z |
| 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 | 2015-09-29T22:00:00Z |
| Keywords | "xray bright classical", "tau deviates", "cool plasma", "tau permanently differs", "magnetic field lines", "protoplanetary disk", "accretion type", "established ctts properties", "tauri star ctts", "xray emitting plasma", "stellar surface produces", "accretion process", "transient phenomenon", "standard accretion scenario", "inner edge" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Christian Schneider, 2015, 'Magnetically funneled accretion challenged by X-rays from T Tauri', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-u05w38p |