A dataset provided by the European Space Agency

Name: Spectral and temporal variations of the X-ray pulsar RX J0720.4-3125
Published: 2013-10-09T00:00:00Z

Proposal ID	069007
Title	Spectral and temporal variations of the X-ray pulsar RX J0720.4-3125
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0690070201
DOI	https://doi.org/10.5270/esa-lt9e5e3
Principal Investigator, PI	Dr Markus Hohle
Abstract	RX J0720.4-3125 (RX J0720) belongs to a group of seven isolated and radio-quietX-ray pulsars discovered during the ROSAT all sky survey; the so calledMagnificent Seven (M7). Among them, RX J0720 occupies an unique placeinasmuch it exhibits spectral and temporal variations on time scales of yearsthat are not seen for the other M7. These variations could be the result of asudden event (e.g. a glitch), or they are periodic in nature, e.g. caused byfree precession. In either case one expects to see further spectral/temporalevolution. Recent XMM-Newton data (rev. 2076 and 2087) could better fit to aglitch, both from the spectral and the temporal behaviour. However, the variablephase lag between soft (120-400eV) and hard (400-1000eV) X-rays abridge
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 Discovery of a Strongly Phase-variable Spectral Feature in the Isolated Neutron Star RX J0720.4-3125 \|Borghese A. Rea N. et al. \| ApJ \| 807-20 \| 2015 \| 2015ApJ...807L..20B \| http://ui.adsabs.harvard.edu/#abs/2015ApJ...807L..20B 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 The compactness of the isolated neutron star RX J0720.4-3125 \|Hambaryan V. Suleimanov V. et al. \| A&A \| 601-108 \| 2017 \| 2017A&A...601A.108H \| http://ui.adsabs.harvard.edu/#abs/2017A&A...601A.108H Universal detection of high-temperature emission in X-ray isolated neutron stars \|Yoneyama Tomokage Hayashida Kiyoshi et al. \| PASJ \| 71-17 \| 2019 \| 2019PASJ...71...17Y \| http://ui.adsabs.harvard.edu/#abs/2019PASJ...71...17Y Hard X-Ray Excess from the Magnificent Seven Neutron Stars \|Dessert Christopher Foster Joshua W. \| ApJ \| 904-42 \| 2020 \| 2020ApJ...904...42D \| http://ui.adsabs.harvard.edu/#abs/2020ApJ...904...42D Axion Emission Can Explain a New Hard X-Ray Excess from Nearby Isolated Neutron Stars \|Buschmann Malte Co Raymond T. et al. \| PhRvL \| 126-21102 \| 2021 \| 2021PhRvL.126b1102B \| http://ui.adsabs.harvard.edu/#abs/2021PhRvL.126b1102B 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 XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII O VIII and Fe L-shell Transitions \|Pan Zeyang Qu Zhijie et al. \| ApJS \| 271-62 \| 2024 \| 2024ApJS..271...62P \| http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P 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	2012-09-18T08:30:42Z/2012-09-18T15:59:19Z
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	2013-10-09T00:00:00Z
Last Update	2025-01-27
Keywords	"sky survey", "rx j0720 occupies", "temporal evolution", "rx j0720", "temporal variations", "variable phase lag", "M7", "1000ev xray", "XMM-Newton", "ROSAT", "sudden event", "J0720.4", "XMM", "soft 120 400ev", "free precession", "time scales"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Markus Hohle, 2013, 'Spectral and temporal variations of the X-ray pulsar RX J0720.4-3125', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-lt9e5e3