| Name | 088003 |
| Title | Understanding the gamma Cas phenomenon |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0880030201 |
| DOI | https://doi.org/10.57780/esa-b7ab2jg |
| Author | European Space Agency |
| Description | gamma Cas objects are Be stars presenting an unusually intense and hard X-ray emission. Currently, 25 such objects are known but the origin of their X-ray peculiarities remains debated. By means of snapshots of carefully selected objects, we propose to sensitively test one of the competing scenarios aiming at explaining this phenomenon. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2021-05-30T05:32:58Z/2022-03-22T05:00:32Z |
| Version | 19.17_20220121_1250 |
| 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 | 2023-04-12T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2023, Understanding The Gamma Cas Phenomenon, 19.17_20220121_1250, European Space Agency, https://doi.org/10.57780/esa-b7ab2jg |