| 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 | 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 | 2018-04-19T22:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "ngc 1624", "NGC 1624", "strongest magnetic field", "stellar rotation", "closed loops", "heavily attenuated", "XMM-Newton", "hot plasma structure", "rotational phases", "xray flux", "XMM", "trapping 95", "trapped wind", "xray emission", "giant magnetosphere ?.", "star ngc 1624", "magnetic field", "xmm newton" |
| 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?', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-yvdrpgi |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |