A dataset provided by the European Space Agency

Name: A Shifty Spectral Line from CCO PSR J0821-4300: Accretion From a Debris Disk?
Published: 2018-03-29T22:00:00Z

Proposal ID	078187
Title	A Shifty Spectral Line from CCO PSR J0821-4300: Accretion From a Debris Disk?
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0781870101
DOI	https://doi.org/10.5270/esa-emgihvq
Principal Investigator, PI	Dr Eric Gotthelf
Abstract	We confirm a shifting line feature in the spectrum of PSR J0821-4300, thecompact central object (CCO) in Puppis A. This pulsar has the smallest dipolemagnetic field (2.8E10 G) inferred for any young neutron star. The spectralfeature is consistent with electron cyclotron resonance scattering of surfaceemitted photons in this magnetic field, however, its strength and energy areunexpectedly variable in time. We propose new measurements to monitor theimplied variability of the magnetic field, plausibly indicative of accretion ofsupernova debris, a likely mechanism for generating an emission line. Thisobservation will also allow simultaneous timing of the pulsar to test forcorrelated torque noise and to ensure a continued ephemeris to monitor its long-term timing behavior.
Publications	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 Measuring the Nonaxially Symmetric Surface Temperature Distribution of the Central Compact Object in Puppis A \|Alford J. A. J. Gotthelf E. V. et al. \| ApJ \| 927-233 \| 2022 \| 2022ApJ...927..233A \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...927..233A 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	2016-11-08T00:29:53Z/2016-11-09T02:16:33Z
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	2018-03-29T22:00:00Z
Keywords	"implied variability", "psr j0821 4300", "debris disk ?.", "continued ephemeris", "shifty spectral line", "dipole magnetic field", "surface emitted photons", "correlated torque noise", "unexpectedly variable", "neutron star", "supernova debris", "emission line", "magnetic field", "shifting line"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Eric Gotthelf, 2018, 'A Shifty Spectral Line from CCO PSR J0821-4300: Accretion From a Debris Disk?', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-emgihvq