A dataset provided by the European Space Agency

Name: The buddies of Babcock.s star - X-ray emission from extreme magnetic ApBp starsquestionMark
Published: 2011-12-22T00:00:00Z

Proposal ID	065123
Title	The buddies of Babcock.s star - X-ray emission from extreme magnetic ApBp stars?
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0651230101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0651230201 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0651230301
DOI	https://doi.org/10.5270/esa-i3il18l
Principal Investigator, PI	Dr Jan Robrade
Abstract	We propose XMM-Newton observations of two extreme magnetic Ap/Bp stars, HD 75049and HD 137509, that exhibit surface field strengths of about 30 kG. HD 75049 isan Ap star and its extraordinary large magnetic field is dominated by a strongdipole component. The B9p star HD 137509 exhibits a similar surface fieldstrength, but the underlying magnetic structure has a far more complex fieldgeometry. Our targets have magnetic fields that rival famous Babcock.s star thatwas recently established as a bright X-ray source. X-ray emission fromintermediate mass stars is thought to originate from magnetically confinedwind-shocks and the aim of this proposal is to test, whether HD 75049 and HD137509 emit X-rays and if so, to determine their basic X-ray properties.
Publications	Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift \|Yershov, V. N., \| Ap&SS \| 354-97 \| 2014 \| 2014Ap&SS.354...97Y \| http://ui.adsabs.harvard.edu/#abs/2014Ap&SS.354...97Y X-rays from magnetic intermediate mass Ap/Bp stars \|Robrade, Jan, \| AdSpR \| 58-727 \| 2016 \| 2016AdSpR..58..727R \| http://ui.adsabs.harvard.edu/#abs/2016AdSpR..58..727R The Million Optical - Radio/X-ray Associations (MORX) Catalogue \|Flesch, Eric W., \| PASA \| 33-52 \| 2016 \| 2016PASA...33...52F \| http://ui.adsabs.harvard.edu/#abs/2016PASA...33...52F Classification of 4XMM-DR9 sources by machine learning \|Zhang, Yanxia, Zhao, Yongheng, \| MNRAS \| 503-5263 \| 2021 \| 2021MNRAS.503.5263Z \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.503.5263Z From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez, Antonio C., \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R Robust constraints on feebly interacting particles using XMM-Newton \|Luque, Pedro De la Torre, Balaji, Shyam, \| PhRvD \| 109-L101305 \| 2024 \| 2024PhRvD.109j1305L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j1305L Multimessenger search for electrophilic feebly interacting particles from supernovae \|Luque, Pedro De la Torre, Balaji, Shyam, \| PhRvD \| 109-103028 \| 2024 \| 2024PhRvD.109j3028L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j3028L Importance of Cosmic-Ray Propagation on Sub-GeV Dark Matter Constraints \|De la Torre Luque, Pedro, Balaji, Shyam, \| ApJ \| 968-46 \| 2024 \| 2024ApJ...968...46D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...968...46D
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2010-10-04T22:17:26Z/2010-11-28T01:53:42Z
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	2011-12-22T00:00:00Z
Keywords	"magnetic field", "magnetic fields", "dipole component", "surface field strength", "XMM-Newton", "xmm newton", "bp stars", "rival famous babcock", "hd 75049", "magnetic ap", "HD 137509", "star xray emission", "bright xray source", "ap star", "XMM", "intermediate mass stars", "hd 137509", "magnetic structure", "basic xray properties", "xray emission", "complex field geometry"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Jan Robrade, 2011, 'The buddies of Babcock.s star - X-ray emission from extreme magnetic ApBp starsquestionMark', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-i3il18l