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SUMMARY:Pulsar Timing Arrays: a window into dark matter and gravity
DTSTART:20250703T143000Z
DTEND:20250703T160000Z
DTSTAMP:20260802T110403Z
UID:937f8f99-13bb-445c-894a-365afd394ec9
SEQUENCE:1
CREATED:20250627T135737Z
DESCRIPTION: Pulsar Timing Array (PTA) facilities are powerful experiments
  timing an ensemble of galactic millisecond pulsars and have recently repo
 rted strong evidence of a stochastic gravitational wave background\, most 
 likely originating from inspiraling supermassive black hole binaries. Whil
 e a primary objective is to characterize this signal and the underlying po
 pulation of astrophysical sources\, PTAs also offer a unique window into f
 undamental physics. In this talk\, I will demonstrate how PTAs can probe t
 wo distinct aspects of fundamental physics: on the one hand\, the nature o
 f dark matter\, including its interactions with the Standard Model and its
  gravitational coupling\; on the other hand\, modified theories of gravity
  that influence the inspiral of supermassive black hole binaries. 
LAST-MODIFIED:20250627T135737Z
LOCATION:DF Seminar Room (2-8.3)\, 2nd floor of Physics Building
URL:http://df.vps.tecnico.ulisboa.pt/en/events/pulsar-timing-arrays-a-wind
 ow-into-dark-matter-and-gravity/
X-ALT-DESC;FMTTYPE=text/html:<p data-block-key="pyl7c"> Pulsar Timing Arra
 y (PTA) facilities are powerful experiments timing an ensemble of galactic
  millisecond pulsars and have recently reported strong evidence of a stoch
 astic gravitational wave background\, most likely originating from inspira
 ling supermassive black hole binaries. <br/><br/>While a primary objective
  is to characterize this signal and the underlying population of astrophys
 ical sources\, PTAs also offer a unique window into fundamental physics. I
 n this talk\, I will demonstrate how PTAs can probe two distinct aspects o
 f fundamental physics: on the one hand\, the nature of dark matter\, inclu
 ding its interactions with the Standard Model and its gravitational coupli
 ng\; on the other hand\, modified theories of gravity that influence the i
 nspiral of supermassive black hole binaries. </p>
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