| Proposal ID | 086359 |
| Title | Investigating accretion in the rare low-flux states of intermediate polars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0863590601 |
| DOI | https://doi.org/10.57780/esa-gonzuji |
| Principal Investigator, PI | Dr Aarran Shaw |
| Abstract | Magnetic cataclysmic variables are binary systems which contain a highlymagnetic white dwarf accreting matter along its magnetic field lines from alate-type companion. It has recently been found that a particular class of thesesystems known as intermediate polars occasionally enter previously unanticipatedlow states, during which the accretion-rate, and therefore flux,mysteriously decreases. Deep, pointed X-ray observations of these low states arerare, so we propose a 50ks XMM-Newton Target of Opportunity observation of thenext intermediate polar to enter such a state, in order to investigate theaccretion mechanisms (or lack thereof) in this poorly understood low-fluxregime. |
| Publications | No publications found for current proposal! |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2022-02-14T01:02:23Z/2022-02-18T09:15:30Z |
| 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 | 2023-03-16T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "intermediate polars", "XMM-Newton", "magnetic cataclysmic variables", "low flux regime", "intermediate polar", "investigating accretion", "xmm newton target", "accretion rate", "XMM", "accretion mechanisms", "rare low flux", "unanticipated `` low", "late type companion", "magnetic field lines", "mysteriously decreases", "binary systems" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Aarran Shaw, 2023, 'Investigating accretion in the rare low-flux states of intermediate polars', 21.51_20241115_1113, European Space Agency, https://doi.org/10.57780/esa-gonzuji |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |