| Name | 088105 |
| Title | M dwarf dips\: signposts of mega-slingshot prominences? |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0881050101 |
| DOI | https://doi.org/10.57780/esa-u5xip4y |
| Author | European Space Agency |
| Description | Suspicious dips have recently been found in the light curves of some young M dwarfs. At first these dips were thought to be transiting exoplanets, but the changing phase and depth over time scales of weeks makes an exoplanetary origin unlikely. We suggest the presence of extremely dense slingshot prominences as the cause for this variability. We have recently discovered an M dwarf with this behavior that is very X-ray bright, allowing to test the slingshot prominence scenario by testing whether a deep dip in X-rays occurs at the same time as the shallow optical dip. We propose to observe the star for 1.2 rotation periods, i.e.\ a total of 115\,ks with XMM-EPIC. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2022-04-16T21:52:41Z/2022-04-18T10:28:46Z |
| Version | PPS_NOT_AVAILABLE |
| 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 | 2023-05-07T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2023, M Dwarf Dips\: Signposts Of Mega-Slingshot Prominencesquestionmark, PPS_NOT_AVAILABLE, European Space Agency, https://doi.org/10.57780/esa-u5xip4y |