Bursts of Gravitational Waves due to Crustquake from Pulsars. (arXiv:1904.04570v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Layek_B/0/1/0/all/0/1">Biswanath Layek</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Yadav_P/0/1/0/all/0/1">Pradeepkumar Yadav</a>
We explore here a possible consequence of crustquake, namely, the generation
of bursts of gravitational waves (GWs) due to a sudden change in the quadrupole
moment (QM) of a deformed pulsar as a result of crustquake. The occurrence of
crustquake in a rotating neutron star can play many important roles in neutron
star (NS) dynamics. Here we propose that if a pulsar undergoes crustquake, then
the generation of bursts of GWs is an inevitable consequence of crustquake. We
have estimated the strain amplitudes ($h_0$) for such bursts of GWs and
compared with the strain amplitudes for GWs produced in various other scenarios
for isolated pulsars as suggested earlier in the literature. The values we
obtain are comparable to those suggestions. We also estimate the order of
magnitude for characteristic strain ($h_c$) and signal to noise ratio (SNR) for
such bursts. For exotic quarks stars, a multifold enhancement of strain
amplitudes is expected, which makes quark stars a potential source of
gravitational waves as a result of crustquake. The absence of such waves may
put constraints on such hypothetical stars
We explore here a possible consequence of crustquake, namely, the generation
of bursts of gravitational waves (GWs) due to a sudden change in the quadrupole
moment (QM) of a deformed pulsar as a result of crustquake. The occurrence of
crustquake in a rotating neutron star can play many important roles in neutron
star (NS) dynamics. Here we propose that if a pulsar undergoes crustquake, then
the generation of bursts of GWs is an inevitable consequence of crustquake. We
have estimated the strain amplitudes ($h_0$) for such bursts of GWs and
compared with the strain amplitudes for GWs produced in various other scenarios
for isolated pulsars as suggested earlier in the literature. The values we
obtain are comparable to those suggestions. We also estimate the order of
magnitude for characteristic strain ($h_c$) and signal to noise ratio (SNR) for
such bursts. For exotic quarks stars, a multifold enhancement of strain
amplitudes is expected, which makes quark stars a potential source of
gravitational waves as a result of crustquake. The absence of such waves may
put constraints on such hypothetical stars
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