| Proposal ID | 091659 |
| Title | Monitoring the intermittent extreme HBL 1ES 2344+514 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0916590101 |
| DOI | https://doi.org/10.57780/esa-hs9gjtk |
| Principal Investigator, PI | Mr Axel Arbet-Engels |
| Abstract | We propose to monitor 1ES 2344+514 to better understand its intermittent extremestates. 1ES 2344+514 is a nearby BL Lac type object known for behaving as anextremely high-frequency peaked BL Lac object (EHBL) occasionally. During anX-ray flare in 1996, a shift of the synchrotron peak to frequencies above3*10**18 Hz was reported, suggesting that the EHBL nature is correlated with theflux level. Still, the small number of published MWL observations does not allowfor a coherent picture. In fact, thanks to recent Xray observations we organizedin 2020, we reveal an EHBL behaviour during low activity, while we also foundstrong flaring periods without EHBL characteristics. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2023-07-20T22:00:08Z/2023-07-21T04:06:48Z |
| Version | 20.10_20230417_1156 |
| 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 | 2024-08-12T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | XMM-Newton, OM, RGS, EPIC, X-ray, Multi-Mirror, SAS |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Mr Axel Arbet-Engels, 2024, 'Monitoring the intermittent extreme HBL 1ES 2344+514', 20.10_20230417_1156, European Space Agency, https://doi.org/10.57780/esa-hs9gjtk |