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SUMMARY:Pulsar Timing Arrays: a window into dark matter and gravity
DTSTART:20250703T143000Z
DTEND:20250703T160000Z
DTSTAMP:20260728T140424Z
UID:937f8f99-13bb-445c-894a-365afd394ec9
SEQUENCE:2
CREATED:20250627T135747Z
DESCRIPTION:Pulsar Timing Array (PTA) facilities are powerful experiments 
 timing an ensemble of galactic millisecond pulsars and have recently repor
 ted strong evidence of a stochastic gravitational wave background\, most l
 ikely originating from inspiraling supermassive black hole binaries. While
  a primary objective is to characterize this signal and the underlying pop
 ulation of astrophysical sources\, PTAs also offer a unique window into fu
 ndamental physics. In this talk\, I will demonstrate how PTAs can probe tw
 o distinct aspects of fundamental physics: on the one hand\, the nature of
  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:20250627T135757Z
LOCATION:DF Seminar Room (2-8.3)\, 2nd floor of Physics Building
URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/pulsar-timing-arrays-a-win
 dow-into-dark-matter-and-gravity/
X-ALT-DESC;FMTTYPE=text/html:<p data-block-key="pyl7c">Pulsar Timing Array
  (PTA) facilities are powerful experiments timing an ensemble of galactic 
 millisecond pulsars and have recently reported strong evidence of a stocha
 stic gravitational wave background\, most likely originating from inspiral
 ing supermassive black hole binaries.<br/><br/> While a primary objective 
 is to characterize this signal and the underlying population of astrophysi
 cal sources\, PTAs also offer a unique window into fundamental physics. In
  this talk\, I will demonstrate how PTAs can probe two distinct aspects of
  fundamental physics: on the one hand\, the nature of dark matter\, includ
 ing its interactions with the Standard Model and its gravitational couplin
 g\; on the other hand\, modified theories of gravity that influence the in
 spiral of supermassive black hole binaries.</p>
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