|Title||Interactions of flares, accretion and wind in young stars|
|Author||Dr Hans Moritz Guenther|
|Description||Young stars can produce X-rays by different mechanisms: Coronal activity, accretion shocks and shocks in outflows. We propose to observe two targets within one field-of-view (FOV): SU Aur is accreting mass from a disk and shows violent coronal activity. We will study the time evolution of stellar flares on time scales from seconds to minutes using the high count rate in the EPIC and the OM to discover interactions with the accretion streams: The signature of the flare onset will differ in X-rays and UV between flares on coronal loops and flares on those field lines, which carry the accretion stream from the disk. AB Aur is more massive, it shows a tentative modulation in the X-ray luminosity apparently without spectral changes and contrary to model expectations.|
|Publication||The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
Consistent dust and gas models for protoplanetary disks. I. Disk shape, dust settling, opacities, and PAHs . Woitke, P., Min, M., et all. . A&A . 586-103 . 2016 . 2016A&A...586A.103W ,
X-Ray Emission and Disk Irradiation of HL Tau and HD 100546 . Skinner, Stephen L., Gu00fcdel, Manuel, . ApJ . 888-15 . 2020 . 2020ApJ...888...15S ,
|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, 2012-05-08T00:00:00Z, 067196, 17.56_20190403_1200. https://doi.org/10.5270/esa-f3j0nz2|