|
Title
|
|
|
|
Diving below the spin-down limit : constraints on gravitational waves from the energetic young pulsar PSR J0537-6910
| |
|
Author
|
|
|
|
| |
|
Institution/Organisation
|
|
|
|
LIGO Sci Collaboration
Virgo Collaboration
KAGRA Collaboration
| |
|
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 x10(-5), which is the third best constraint for any young pulsar. |
| |
|
Language
|
|
|
|
English
| |
|
Source (journal)
|
|
|
|
The astrophysical journal : letters. - Bristol, 1988, currens
| |
|
Publication
|
|
|
|
Bristol
:
2021
| |
|
ISSN
|
|
|
|
2041-8205
[print]
2041-8213
[online]
| |
|
DOI
|
|
|
|
10.3847/2041-8213/ABFFCD
| |
|
Volume/pages
|
|
|
|
913
:2
(2021)
, 15 p.
| |
|
Article Reference
|
|
|
|
L27
| |
|
ISI
|
|
|
|
000656683600001
| |
|
Medium
|
|
|
|
E-only publicatie
| |
|
Full text (Publisher's DOI)
|
|
|
|
| |
|
Full text (publisher's version - intranet only)
|
|
|
|
| |
|