| Proposal ID | 080411 |
| Title | Unveiling the Xray faint intermediate polars-source of the Galactic Ridge X-rays |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0804110101 |
| DOI | https://doi.org/10.5270/esa-jmefv2o |
| Principal Investigator, PI | Dr Hauke Worpel |
| Abstract | The poorly-understood Galactic Ridge X-ray Emission (GRXE) is an X-raybackground concentrated around the Galactic plane, primarily composed ofdifficult to resolve discrete sources. The most promising candidates for itsorigin above a few keV are the intermediate polars (IPs), a class of magneticcataclysmic variables (CVs), consisting of a strongly magnetic white dwarf and aRoche-lobe filling companion. Most of the 49 confirmed IPs are X-ray bright (L_Xapprox 10^33 erg/s) but there may be a more numerous undiscovered population offainter (L_X approx 10^31$ erg/s) IPs. We propose to observe 13 underluminous IPcandidates to confirm their nature as IPs, to search for the underluminous IPpopulation, detect spin period |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2017-04-19T03:56:18Z/2018-04-21T14:31:22Z |
| 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 | 2019-05-14T22:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "xray bright l_x", "intermediate polars ips", "magnetic white dwarf", "spin period", "resolve discrete sources", "underluminous ip candidates", "galactic ridge xray", "promising candidates", "primarily composed", "xray background concentrated", "galactic plane", "underluminous ip population", "numerous undiscovered population", "fainter l_x" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Hauke Worpel, 2019, 'Unveiling the Xray faint intermediate polars-source of the Galactic Ridge X-rays', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-jmefv2o |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |