A dataset provided by the European Space Agency

Name: A phase-variable line in the spectrum of a persistent magnetarquestionMark
Published: 2015-08-25T22:00:00Z

Proposal ID	074480
Title	A phase-variable line in the spectrum of a persistent magnetar?
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0744800101
DOI	https://doi.org/10.5270/esa-fxo1qqt
Principal Investigator, PI	Dr Andrea Tiengo
Abstract	We have recently discovered a phase-variable absorption feature in the X-rayspectrum of the SGR 0418+5729. If interpreted as a proton cyclotron line, itsenergy implies a magnetic field ranging from 2E14 G to >1E15 G, which is thestrongest magnetic field ever measured in any astrophysical object. This is aspectacular confirmation of the magnetar model, according to which AXPs and SGRsare neutron stars powered by their strong magnetic fields. During a systematicsearch for variable lines in magnetars, we have found a promising candidate inan XMM observation of the AXP 1E2259+586 performed in 2002. Since it is a brightpersistent X-ray source and not a transient, like SGR0418+5729, it can bere-observed to study its spectral variability with phase in greater detail and its long-term evolution.
Publications	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 Detailed X-ray spectroscopy of the magnetar 1E 2259+586 \|Pizzocaro, D., Tiengo, A., et al. \| A&A \| 626-39 \| 2019 \| 2019A&A...626A..39P \| http://ui.adsabs.harvard.edu/#abs/2019A&A...626A..39P 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 The detection of polarized X-ray emission from the magnetar 1E 2259+586 \|Heyl, Jeremy, Taverna, Roberto, et al. \| MNRAS \| 527-12219 \| 2024 \| 2024MNRAS.52712219H \| http://ui.adsabs.harvard.edu/#abs/2024MNRAS.52712219H X-ray Polarization from Magnetar Sources \|Taverna, Roberto, Turolla, Roberto, \| Galax \| 12-6 \| 2024 \| 2024Galax..12....6T \| http://ui.adsabs.harvard.edu/#abs/2024Galax..12....6T 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	2014-07-29T21:00:32Z/2014-07-31T04:07:12Z
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	2015-08-25T22:00:00Z
Keywords	"magnetic field ranging", "magnetic fields", "persistent magnetar ?.", "phase variable line", "proton cyclotron line", "magnetar model", "systematic search", "axp 1e2259", "spectral variability", "astrophysical object", "sgr 0418", "promising candidate", "XMM", "586 performed", "xray spectrum", "SGR 0418+5729", "strongest magnetic field", "variable lines", "spectacular confirmation", "neutron stars powered", "phase variable absorption", "energy implies", "term evolution"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Andrea Tiengo, 2015, 'A phase-variable line in the spectrum of a persistent magnetarquestionMark', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-fxo1qqt