| 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 | 2026-06-19 |
| Keywords | "underluminous ip candidates", "numerous undiscovered population", "magnetic white dwarf", "galactic plane", "intermediate polars ips", "underluminous ip population", "xray bright l_x", "fainter l_x", "spin period", "xray background concentrated", "galactic ridge xray", "resolve discrete sources", "promising candidates", "primarily composed" |
| 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. |