Quasi-Periodic Oscillations in magnetars: linking variability and emission

Authors
Publication date 20-03-2013
Journal Proceedings of the International Astronomical Union
Event IAUS 291: Neutron stars and pulsars: Challenges and opportunities after 80 Years
Volume | Issue number 8 | S291
Pages (from-to) 155-158
Organisations
  • Faculty of Science (FNWI) - Anton Pannekoek Institute for Astronomy (API)
Abstract I present recent results studying flare emission in magnetars. Strong quasi-periodic oscillations observed in the tail of giant magnetar flares are frequently interpreted as evidence for global seismic oscillations. I demonstrate that such a global oscillation is not directly observable in the lightcurve. New work suggests the amplitude for the strongest QPO stays nearly constant in the rotation phases where it is observed, which I argue suggests it is produced by an additional emission process from the star.
Document type Article
Note Proceedings title: Neutron stars and pulsars : challenges and opportunities after 80 years : proceedings of the 291st Symposium of the International Astronomical Union, held in Beijing, China, 20-24 August 2012 Publisher: Cambridge University Pres Place of publication: Cambridge ISBN: 9781107033801 Editors: J. van Leeuwen
Language English
Published at https://doi.org/10.1017/S1743921312023460
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