We observe X-ray emission from low mass protostars and Herbig-Haro objects inthe HH24-26 region in Orion B molecular cloud. One goal is to establish theimportance of star-disk interactions in Class I protostars. We examine if the6.4 keV fluorescence line come from circumstellar disks, showing that thesedisks must be irradiated from plasma confined in large magnetic loops. Thesecond goal is to investigate the X-ray emission from Class 0 protostars, which is important since at this stage the central star has not yet assembled, hence the dynamo mechanism may not have started. The third goal is to investigate the origin of X-ray emission from Herbig-Haro objects, whose nature has not been well understood.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2003-09-03T12:51:35Z/2003-09-04T02:43:33Z
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.
European Space Agency, Dr Hideki Ozawa, 2004, 'X-ray observation of protostars in the HH24-26 region in Orion B molecular cloud', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-93rsvb4
