Gamma-ray burst afterglow plateaus and gravitational waves

Multi-messenger signature of a millisecond magnetar?

Alessandra Corsi, Peter Istvan Meszaros

Research output: Contribution to journalArticle

99 Citations (Scopus)

Abstract

The existence of a shallow decay phase in the early X-ray afterglows of gamma-ray bursts is a common feature. Here we investigate the possibility that this is connected to the formation of a highly magnetized millisecond pulsar, pumping energy into the fireball on timescales longer than the prompt emission. In this scenario, the nascent neutron star could undergo a secular bar-mode instability, leading to gravitational wave losses which would affect the neutron star spin-down. In this case, nearby gamma-ray bursts with isotropic energies of the order of 1050 ergs would produce a detectable gravitational wave signal emitted in association with an observed X-ray light-curve plateau, over relatively long timescales of minutes to about an hour. The peak amplitude of the gravitational wave signal would be delayed with respect to the gamma-ray burst trigger, offering gravitational wave interferometers such as the advanced LIGO and Virgo the challenging possibility of catching its signature on the fly.

Original languageEnglish (US)
Pages (from-to)1171-1178
Number of pages8
JournalAstrophysical Journal
Volume702
Issue number2
DOIs
StatePublished - Jan 1 2009

Fingerprint

magnetars
afterglows
gamma ray bursts
gravitational waves
plateaus
signatures
plateau
neutron stars
timescale
LIGO (observatory)
fireballs
interferometer
pulsars
erg
light curve
energy
pumping
x rays
interferometers
actuators

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Corsi, Alessandra ; Meszaros, Peter Istvan. / Gamma-ray burst afterglow plateaus and gravitational waves : Multi-messenger signature of a millisecond magnetar?. In: Astrophysical Journal. 2009 ; Vol. 702, No. 2. pp. 1171-1178.
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Gamma-ray burst afterglow plateaus and gravitational waves : Multi-messenger signature of a millisecond magnetar? / Corsi, Alessandra; Meszaros, Peter Istvan.

In: Astrophysical Journal, Vol. 702, No. 2, 01.01.2009, p. 1171-1178.

Research output: Contribution to journalArticle

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