| Proposal ID | 088487 |
| Title | Accretion physics in AR UMa, an extremely magnetized polar |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0884870101 |
| DOI | https://doi.org/10.57780/esa-3h1lcdd |
| Principal Investigator, PI | Dr Axel Schwope |
| Abstract | We propose a triggered observation of the highest magnetized polar, AR UMa. Ourtarget with a magnetic field of about 230MG gives access to an as yet unexploredparameter regime of magnetic accretion. It escaped a high-state X-rayobservation so far due to an extended low state. Utilizing the broad spectralrange covered by XMM-Newton including the OM, we will simultaneously determinethe energy content of the main cooling channels of the accretion plasma:cyclotron radiation in the UV, plasma radiation in hard X-rays and re-processedradiation in soft X-rays. We will compare our observations with accretion columnmodels and study quantitatively the energy balance of the cooling plasma as afunction of the accretion rate and the magnetic field strength. |
| Publications | No publications found for current proposal! |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2023-05-09T20:31:40Z/2023-05-10T08:51:40Z |
| Version | 21.51_20241115_1113 |
| 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 | 2024-05-18T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | XMM-Newton, OM, RGS, EPIC, X-ray, Multi-Mirror, SAS |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Axel Schwope, 2024, 'Accretion physics in AR UMa, an extremely magnetized polar', 21.51_20241115_1113, European Space Agency, https://doi.org/10.57780/esa-3h1lcdd |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |