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Abbott, R.;
Abbott, T. D.;
Abraham, S.;
Acernese, F.;
Ackley, K.;
Adams, A.;
Adams, C.;
Adhikari, R. X.;
Adya, V. B.;
Affeldt, C.;
Agarwal, D.;
Agathos, M.;
Agatsuma, K.;
Aggarwal, N.;
Aguiar, O. D.;
Aiello, L.;
Ain, A.;
Ajith, P.;
Akutsu, T.;
Aleman, K. M.;
Allen, G.;
Allocca, A.;
Altin, P. A.;
Amato, A.;
[...]
Diving below the Spin-down Limit: Constraints on Gravitational Waves from the Energetic Young Pulsar PSR J0537-6910
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- Medientyp: E-Artikel
- Titel: Diving below the Spin-down Limit: Constraints on Gravitational Waves from the Energetic Young Pulsar PSR J0537-6910
- Beteiligte: Abbott, R.; Abbott, T. D.; Abraham, S.; Acernese, F.; Ackley, K.; Adams, A.; Adams, C.; Adhikari, R. X.; Adya, V. B.; Affeldt, C.; Agarwal, D.; Agathos, M.; Agatsuma, K.; Aggarwal, N.; Aguiar, O. D.; Aiello, L.; Ain, A.; Ajith, P.; Akutsu, T.; Aleman, K. M.; Allen, G.; Allocca, A.; Altin, P. A.; Amato, A.; [...]
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Erschienen:
American Astronomical Society, 2021
- Erschienen in: The Astrophysical Journal Letters, 913 (2021) 2, Seite L27
- Sprache: Nicht zu entscheiden
- DOI: 10.3847/2041-8213/abffcd
- ISSN: 2041-8205; 2041-8213
- Entstehung:
- Anmerkungen:
- Beschreibung: Abstract We present a search for quasi-monochromatic gravitational-wave signals from the young, energetic X-ray pulsar PSR J0537−6910 using data from the second and third observing runs of LIGO and Virgo. The search is enabled by a contemporaneous timing ephemeris obtained using Neutron star Interior Composition Explorer (NICER) data. The NICER ephemeris has also been extended through 2020 October and includes three new glitches. PSR J0537−6910 has the largest spin-down luminosity of any pulsar and exhibits fRequent and strong glitches. Analyses of its long-term and interglitch braking indices provide intriguing evidence that its spin-down energy budget may include gravitational-wave emission from a time-varying mass quadrupole moment. Its 62 Hz rotation frequency also puts its possible gravitational-wave emission in the most sensitive band of the LIGO/Virgo detectors. Motivated by these considerations, we search for gravitational-wave emission at both once and twice the rotation frequency from PSR J0537−6910. We find no signal, however, and report upper limits. Assuming a rigidly rotating triaxial star, our constraints reach below the gravitational-wave spin-down limit for this star for the first time by more than a factor of 2 and limit gravitational waves from the l = m = 2 mode to account for less than 14% of the spin-down energy budget. The fiducial equatorial ellipticity is constrained to less than about 3 ×10−5, which is the third best constraint for any young pulsar.
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