| Proposal ID | 078284 |
| Title | What is the structure of NGC 1624-2s giant magnetosphere? |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0782840501 |
| DOI | https://doi.org/10.5270/esa-yvdrpgi |
| Principal Investigator, PI | Dr Veronique Petit |
| Abstract | We propose to obtain new observations of the magnetic O star NGC 1624-2, whichhas the strongest magnetic field ever detected in a O-star. With such a strongfield, NGC 1624-2 is trapping 95% of its wind into closed loops, and is a uniquelaboratory for the study of magnetically confined stellar winds. Two Chandraobservations, obtained at rotational phases when the magnetic field is theclosest to pole-on and equator-on, respectively, revealed that the intrinsicX-ray emission produced within the magnetosphere is strong, but heavilyattenuated by the trapped wind. With the higher effective area of XMM-Newton, wewill now use the variability of the X-ray flux and hardness over the stellarrotation to diagnose the hot plasma structure of NGC 1624-2s enormous magnetosphere. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2016-09-02T00:39:58Z/2017-03-22T18:21:14Z |
| Version | 17.56_20190403_1200 |
| 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 | 2018-04-19T22:00:00Z |
| Last Update | 2025-08-04 |
| Keywords | "XMM", "XMM-Newton", "rotational phases", "heavily attenuated", "closed loops", "hot plasma structure", "trapped wind", "xray flux", "stellar rotation", "xmm newton", "magnetic field", "NGC 1624", "star ngc 1624", "strongest magnetic field", "giant magnetosphere ?.", "ngc 1624", "xray emission", "trapping 95" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Veronique Petit, 2018, 'What is the structure of NGC 1624-2's giant magnetosphere?', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-yvdrpgi |