| Name | 086389 |
| Title | Catching A Giant X-ray Flare In An Extragalactic Compact Star Cluster |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0863890201 |
| DOI | https://doi.org/10.57780/esa-woqjqdy |
| Author | European Space Agency |
| Description | We have discovered a new type of brief but very energetic flaring phenomenon in two X-ray sources associated with old, compact star clusters around nearby galaxies. These sources flare by factors of >100 to X-ray luminosities 1-2 orders of magnitude larger than the Eddington limit of a neutron star on time scales of <1 minute, yet the process does not destroy the object. These flares represent the most energetic sources ever discovered in globular clusters. We propose XMM-Newton observations of one of these sources that flares repeatedly to catch the flare with the pn to provide better timing and spectra during a flare to constrain the mass and emission mechanism of these intriguing objects. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2021-01-29T17:50:05Z/2021-01-30T17:16:45Z |
| Version | 18.02_20200221_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 | 2022-03-04T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2022, Catching A Giant X-Ray Flare In An Extragalactic Compact Star Cluster, 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-woqjqdy |