| Proposal ID | 065163 |
| Title | Thermal Emission or Charge Exchange from the North Polar Spur |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0651630101 |
| DOI | https://doi.org/10.5270/esa-agj074g |
| Principal Investigator, PI | Dr Dimitra Koutroumpa |
| Abstract | We propose a coupled observation of the North Polar Spur (NPS) and a nearbyoff-spur region in order to determine whether the soft X-ray spectrum of the NPSis solely produced by hot plasma thermal emission, or whether some fraction ofthe emission is produced by charge exchange (CX) collisions between neutralparticles and ions within the hot gas envelope of the Loop I/NPS superbubble.Our goal is to confirm and measure the shift in energy of the He-like O VII andNe IX triplet centroids measured at low significance in previous observations ofthe NPS with XMM-Newton and Suzaku. These shifts are predicted by the CXemission models but not in thermal emission models. We request the new ON/OFFobservations of the NPS in order to avoid large spatial variations of the cosmic background |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2011-02-19T11:49:58Z/2011-03-27T18:52:33Z |
| 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 | 2012-04-12T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "thermal emission", "spatial variations", "soft xray spectrum", "spur region", "xmm newton", "nps superbubble", "low significance", "XMM-Newton", "thermal emission models", "neutral particles", "north polar spur", "cx emission models", "cosmic background", "hot gas envelope", "XMM", "charge exchange" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Dimitra Koutroumpa, 2012, 'Thermal Emission or Charge Exchange from the North Polar Spur', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-agj074g |