Fast X-ray Oscillations During Magnetar Flares

Details Fast X-ray Oscillations During Magnetar Flares Fast X-ray Oscillations During Magnetar Flares

2007-10-12

arxiv.org/abs/0710.2475v1

AIPConf.Proc.968:85-92,2008

Astronomy and Astrophysics

Astrophysics

8 pages, 3 figures, conference proceedings, "Astrophysics of Compact Objects," 2007, Huangshan, China

Scientific paper

10.1063/1.2840458

The giant flares produced by highly magnetized neutron stars, "magnetars," are the brightest sources of high energy radiation outside our solar system. Serendipitous observations with NASA's Rossi X-ray Timing Explorer (RXTE) of the two most recent flares resulted in the discovery of high frequency oscillations in their X-ray fluxes. The frequencies of these oscillations range from about 20 Hz to as high as 1800 Hz, and may represent the first detection of global oscillation modes of neutron stars. Here I will present an observational and theoretical overview of these oscillations and discuss how they might allow us to probe neutron star interiors and dense matter physics.

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