
| Proposal ID | 072115 |
| Title | X-ray Study of Born-Again Planetary Nebulae |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0721150101 |
| DOI | https://doi.org/10.5270/esa-0bgfafi |
| Principal Investigator, PI | Dr Martin Guerrero |
| Abstract | Mass-loading occurs when a fast, tenuous flow ablates a slow, dense clump,resulting in the mixing of cool material into the hot shocked gas. Mass-loadingexists in many astrophysical settings and affects the X- ray luminosity andtemperature of the hot gas. Chandra and XMM-Newton observations of theborn-again planetary nebula (PN) Abell 30 have revealed a puzzling soft pointsource at the central star and soft diffuse X-rays associated with interactionsbetween the fast stellar wind and H-poor ejecta, where mass- loading andcharge-exchange reactions occur. We request XMM-Newton observations of Abell 78,the only additional well-resolved born-again PN, to confirm the effects ofmass-loading and charge-exchange processes in born-again PNe. |
| Publications |
|
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2013-06-02T14:59:55Z/2013-06-03T07:30:10Z |
| 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 | 2014-06-18T00:00:00Z |
| Last Update | 2026-03-04 |
| Keywords | "central star", "dense clump", "astrophysical settings", "tenuous flow ablates", "resolved born", "mass loading", "XMM-Newton", "hot shocked gas", "fast stellar wind", "cool material", "xmm newton", "x ray luminosity", "abell 78", "Abell 30", "x ray", "soft diffuse xray", "mass loading exists", "XMM", "charge exchange processes", "planetary nebulae", "mass loading occurs", "hot gas" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Martin Guerrero, 2014, 'X-ray Study of Born-Again Planetary Nebulae', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-0bgfafi |