| Name | 060453 |
| Title | Dying and relic radio galaxies: vibrant in X-rays |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0604530101 |
| DOI | https://doi.org/10.5270/esa-7w3sqjg |
| Author | European Space Agency |
| Description | If radio galaxies have a finite lifetime, then there should exist dying or relic examples i.e. radio galaxies whose central engines have ceased to be active but whose extended lobes have not yet faded from view. But only a very few are known at radio wavelengths: they are so rare because the relic stage is very short-lived for a radio galaxy whose lobes are no longer continuously injected with freshly accelerated particles from the hotspots. Though relic radio galaxies are very rare, they represent an unexplored phase in the life-cycle of radio galaxies: as radio galaxies die, their relativistic particles lose energy but dramatically increase the population of Lorentz factor 1000 particles which, importantly, inverse-Compton upscatter CMB photons to the X-ray band. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2009-05-20T08:43:51Z/2009-11-27T08:29:29Z |
| Version | 17.56_20190403_1200 |
| Mission Description | The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 | 2010-12-09T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2010, Dying And Relic Radio Galaxies: Vibrant In X-Rays, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-7w3sqjg |