|Title||XMM-Newton Observations of the Galactic Supernova Remnant HB21 (G89.0+4.7)|
|Author||Prof Thomas Pannuti|
|Description||We propose to conduct pointed observations with XMM of the extended X-ray-emitting plasma associated with the Galactic supernova remnant HB21. HB21 is a Galactic mixed-morphology SNRs (MMSNRs): like other sources in its class, HB21 exhibits a shell-like radio morphology coupled with a center-filled X-ray morphology produced by thermal emission from an interior plasma. HB21 is one of the closest MMSNRs that is known to be interacting with adjacent molecular clouds in a dramatic fashion. Our proposed observations of HB21 will sample the brightest portion of the central emission and will search for spectral variations (such as in temperature and in elemental abundances) in the X-ray-emitting plasma with the intent of testing different theories for the origin of MMSNRs.|
|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, 2020-05-16T22:00:00Z, 082128, 17.56_20190403_1200. https://doi.org/10.5270/esa-ldxqryu|