Magnetar asteroseismology with long-term gravitational waves

Journal Article · Fri Apr 15 04:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.081302· OSTI ID:21541429

Kashiyama, Kazumi ^[1]; Ioka, Kunihito ^[2]

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1. Department of Physics, Kyoto University, Kyoto 606-8502 (Japan)
2. Theory Center, KEK High Energy Accelerator Research Organization, Tsukuba 305-0801 (Japan)

Magnetic flares and induced oscillations of magnetars (supermagnetized neutron stars) are promising sources of gravitational waves (GWs). We suggest that the GW emission, if any, would last longer than the observed x-ray quasiperiodic oscillations (X-QPOs), calling for longer-term GW analyses lasting a day to months, compared to current searches' durations. Like the pulsar timing, the oscillation frequency would also evolve with time because of the decay or reconfiguration of the magnetic field, which is crucial for the GW detection. With the observed GW frequency and its time-derivatives, we can probe the interior magnetic field strength of {approx}10{sup 16} G and its evolution to open a new GW asteroseismology with the next generation interferometers like the advanced laser interferometer gravitational wave observatory, the advanced Virgo gravitational wave detector at the European Gravitational Observatory, the Large-scale cryogenic gravitational wave telescope, and the Einstein telescope.

• OSTI ID: 21541429
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 8 Vol. 83; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTRONOMY AND ASTROPHYSICS
COSMIC RADIO SOURCES
DETECTION
ELECTROMAGNETIC RADIATION
EMISSION
EVOLUTION
GRAVITATIONAL WAVE DETECTORS
GRAVITATIONAL WAVES
INTERFEROMETERS
IONIZING RADIATIONS
MAGNETIC FIELDS
MEASURING INSTRUMENTS
NEUTRON STARS
OSCILLATIONS
PULSARS
RADIATION DETECTORS
RADIATIONS
STARS
TELESCOPES
X RADIATION