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SUMMARY:A continuous wave window into neutron star structure
DTSTART;VALUE=DATE-TIME:20261025T073000Z
DTEND;VALUE=DATE-TIME:20261025T075000Z
DTSTAMP;VALUE=DATE-TIME:20261025T070523Z
UID:indico-contribution-3019@indico.itp.ac.cn
DESCRIPTION:Speakers: Ayush Hazarika (International Centre for Theoretical
  Physics Asia-Pacific (ICTP-AP)\, University of Chinese Academy of Science
 s)\nEvery rapidly spinning neutron star with slight asymmetry would broadc
 ast a continuous hum of gravitational waves (GW). None of these signals ha
 s been detected yet\, but the silence itself is measurable: searches now s
 et upper limits on the GW amplitude of dozens of known pulsars\, and for a
  growing subset those limits dig below the energy budget available from th
 e stars' own spin-down. We ask what this kind of data\, can say about the 
 interior of a neutron star. The amplitude of the continous signal depends 
 on how much matter the star carries in its deformation and how that matter
  is distributed\, its moment of inertia\, which in turn is fixed by the un
 known equation of state of dense matter. This opens a route to the neutron
  star mass-radius relation that is fully independent of the X-ray pulse-pr
 ofile and binary-merger measurements that anchor current constraints. We b
 uild a hierarchial Bayesian pipeline that propagates simulated amplitude l
 imits\, treated consistently as non-detections\, through stellar-structure
  calculations to the mass-radius plane\, marginalizing over the unknown de
 formations of the pulsar population. Rather than claiming a new measuremen
 t\, we chart the sensitivity frontier: how deep continuous-wave searches m
 ust go before they begin to weigh in on dense matter on their own.\n\nhttp
 s://indico.itp.ac.cn/event/427/contributions/3019/
LOCATION:
URL:https://indico.itp.ac.cn/event/427/contributions/3019/
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