| Name | 088497 |
| Title | Follow-up observations of the Quasi-Periodic-Eruption active galaxy GSN 069 |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0884970101 |
| DOI | https://doi.org/10.57780/esa-kthltru |
| Author | European Space Agency |
| Description | One of the most unexpected and surprising results from recent XMM-Newton observations of active galactic nuclei (AGN) is the discovery of a new X-ray variability pattern from the active galaxies GSN 069 and RX J1301.9+2747, both reported by our team recently. In both cases, the X-ray light curve exhibits recurrent X-ray bursts of high amplitude (up to a factor of 100 with respect to the stable quiescent level) dubbed quasi periodic eruptions (QPEs). QPEs have been observed in GSN 069 over the course of about one year, and the latest observations show that the phenomenon has apparently disappeared. We propose here two relatively short XMM-Newton observations of GSN 069 separated by about 6 months to clarify whether QPE disappearance is transient or permanent. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2021-06-30T12:33:07Z/2021-12-03T20:21:25Z |
| Version | 19.16_20210326_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 | 2022-12-30T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2022, Follow-Up Observations Of The Quasi-Periodic-Eruption Active Galaxy Gsn 069, 19.16_20210326_1200, European Space Agency, https://doi.org/10.57780/esa-kthltru |