| Proposal ID | 091099 |
| 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=0910990101 |
| DOI | https://doi.org/10.57780/esa-ky0e5vv |
| Principal Investigator, PI | Mr Axel Arbet-Engels |
| Abstract | We propose to monitor 1ES 2344+514 over seven months with the goal of betterunderstanding its intermittent extreme behaviour. 1ES 2344+514 is a nearby(z=0.044) high energy peaked BL Lac. So far, clear extreme behaviour of thesource has been observed only in high states. During an X-ray flare in 1996, ashift of the synchrotron peak to frequencies above 3*10**18 Hz was reported. Asimilarly extreme behaviour was not found in subsequent MWL campaigns during lowstates, thus suggesting the extreme behaviour being a feature of high states.Still, the small number of published MWL observations does not allow for acoherent picture of the complex spectral behaviour of 1ES 2344+514. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2022-08-05T19:34:11Z/2022-08-06T03:35:51Z |
| Version | 21.51_20241115_1113 |
| 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 | 2023-08-23T00:00:00Z |
| Last Update | 2026-07-09 |
| 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, 2023, 'Monitoring the intermittent extreme HBL 1ES 2344+514', 21.51_20241115_1113, European Space Agency, https://doi.org/10.57780/esa-ky0e5vv |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |