| Proposal ID | 082128 |
| Title | XMM-Newton Observations of the Galactic Supernova Remnant HB21 (G89.0+4.7) |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0821280101 |
| DOI | https://doi.org/10.5270/esa-ldxqryu |
| Principal Investigator, PI | Prof Thomas Pannuti |
| Abstract | We propose to conduct pointed observations with XMM of the extendedX-ray-emitting plasma associated with the Galactic supernova remnant HB21. HB21is 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-raymorphology produced by thermal emission from an interior plasma. HB21 is one ofthe closest MMSNRs that is known to be interacting with adjacent molecularclouds in a dramatic fashion. Our proposed observations of HB21 will sample thebrightest portion of the central emission and will search for spectralvariations (such as in temperature and in elemental abundances) in theX-ray-emitting plasma with the intent of testing different theories for the origin of MMSNRs. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2019-04-16T12:37:31Z/2019-04-23T13:29:59Z |
| 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 | 2020-05-16T22:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "thermal emission", "interior plasma", "spectral variations", "closest mmsupernova remnant", "radio morphology coupled", "central emission", "xmm newton", "XMM-Newton", "adjacent molecular clouds", "xray emitting plasma", "XMM", "G89.0", "elemental abundance", "mmsupernova remnant" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof Thomas Pannuti, 2020, 'XMM-Newton Observations of the Galactic Supernova Remnant HB21 (G89.0+4.7)', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ldxqryu |