|Title||Pre-planned ToO of a pre-main sequence star undergoing an optical-IR outburst|
|Author||Dr Nicolas Grosso|
|Description||Dramatic optical-IR outbursts from PMS stars, which signal the onset of rapid mass-infall onto such stars through their accretion disks, cannot be predicted. However, our Chandra and XMM monitoring of the outburst of V1647 Ori demonstrates that an high accretion rate can also produce an X-ray outburst, and, indeed, that X-ray monitoring of PMS accretion bursts represents a new observational window on the magnetic interaction between the stellar magnetosphere and the accretion disk. We have been allocated Chandra ToO time to monitor with snapshots, beginning just after discovery, any such outbursts during Cycle 9. We propose an 120 ks-exposure XMM ToO of any X-ray outburst confirmed with Chandra to perform X-ray spectroscopy and to investigate X-ray variability on a timescale of a day.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2009-10-29T00:00:00Z, 055164, 17.56_20190403_1200. https://doi.org/10.5270/esa-7g4cjvs|