| Proposal ID | 011249 |
| Title | A Study of the Local Bubble spectrum by X-ray shadowing the Aquila Rift cloud |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0112490101 |
| DOI | https://doi.org/10.5270/esa-f2cw33k |
| Principal Investigator, PI | Dr Bernd Aschenbach |
| Abstract | GT- The nearby molecular cloud Aquila Rift at a distance of 100 pc marks the interface between the Local Bubble (LB) and the Loop I superbubble. Backgroundemission up to at least 1.5 keV is efficiently blocked off by N(H)=1.5 10^{22}cm^{-2}. Thus we will study the pure LB spectrum in this energy range. Thespectral resolution of EPIC pn will allow us to measure relative lineintensities and thus to distinguish between collisional ionization equilibriumand non-equilibrium plasma states. In particular, the open question of a 3/4 keVcontribution of the LB to the X-ray background can be resolved. On- and off-cloud observations can allow to discriminate between fore- and backgroundspectra. Three adjacent 20 ksec observations will cover the steepest gradient. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2003-09-15T02:22:42Z/2003-09-19T11:35:19Z |
| 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 | 2004-10-31T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "equilibrium plasma", "xray background", "xray shadowing", "cm ^{", "aquila rift cloud", "epic pn", "spectral resolution", "local bubble spectrum", "steepest gradient", "background spectra", "EPIC", "energy range", "pc mar", "background emission", "pure lb spectrum", "collisional ionization equilibrium", "efficiently blocked", "local bubble lb", "relative line intensities" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Bernd Aschenbach, 2004, 'A Study of the Local Bubble spectrum by X-ray shadowing the Aquila Rift cloud', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-f2cw33k |