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SUMMARY:Studying astrophysics with Pulsar Timing Arrays
DTSTART;VALUE=DATE-TIME:20260708T082500Z
DTEND;VALUE=DATE-TIME:20260708T084500Z
DTSTAMP;VALUE=DATE-TIME:20261027T030546Z
UID:indico-contribution-817@indico.narit.or.th
DESCRIPTION:Speakers: Siyuan Chen (Shanghai Astronomical Observatory\, Chi
 nese Academy of Sciences)\nPulsar Timing Arrays (PTAs) are entering a new 
 era of nano-Hertz gravitational wave (GW) astronomy with evidence for a GW
  signal found in several PTA data sets\, CPTA\, EPTA\, InPTA\, NANOGrav\, 
 PPTA and MPTA. They are working together in the IPTA to combine the data s
 ets and analyze the truely best upcoming global PTA data set\, IPTA DR3\, 
 to be able to conclusively confirm the detection of nano-Hertz GWs. In add
 ition\, the GammaPTA project is also advancing and offers a complementary 
 observing frequency range to radio PTAs. In my presentation I will focus o
 n tackling the challenge of the identification and characterization of the
  source of the GWs.\n\nOne of the main targets are super massive black hol
 e binaries (SMBHBs)\, which are formed when two galaxies merge. Several pr
 ocesses will drive the evolution of the binary orbit. Measurements of a GW
  background can help to address the question on how SMBHBs evolve over a c
 osmic time scale. Given that direct observations in the electromagnetic sp
 ectrum are difficult\, we can turn to cosmological simulations for further
  tests. Finding an individual SMBHB as a GW source will not only allow for
  the possibility to distinguish different population models of SMBHBs\, bu
 t also for multi-messenger astrophysics. I will attempt to review the curr
 ent status of astrophysical interpretation efforts from the PTA community 
 and how we will move forward into the post-detection era.\n\nhttps://indic
 o.narit.or.th/event/236/contributions/817/
LOCATION:National Astronomical Research Institute of Thailand (NARIT) Andr
 omeda Meeting Room
URL:https://indico.narit.or.th/event/236/contributions/817/
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