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SUMMARY:Robust Inference of the Binary Black Hole Spin Population Using Gr
 avitational-Wave Data
DTSTART;VALUE=DATE-TIME:20260715T090000Z
DTEND;VALUE=DATE-TIME:20260715T092000Z
DTSTAMP;VALUE=DATE-TIME:20260720T190548Z
UID:indico-contribution-2501-8970@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Kazuya Kobayashi ()\nThe spin population of binary b
 lack holes (BBHs) provides key insights into their formation channels. Rec
 ent gravitational-wave (GW) observations have suggested the presence of sp
 in subpopulations and correlations between spin and other BBH parameters. 
 However\, the limited measurability of spins in certain regions of the par
 ameter space can bias the inference of the underlying spin population. We 
 propose a new inference method to mitigate this limitation\, demonstrate i
 ts performance using simulations\, and apply it to real GW data to infer t
 he underlying BBH spin population.\n\nhttps://indico.icrr.u-tokyo.ac.jp/ev
 ent/1254/contributions/8970/
LOCATION:Kashiwa Large Seminar Room 601 (Kashiwa)
URL:https://indico.icrr.u-tokyo.ac.jp/event/1254/contributions/8970/
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SUMMARY:Direct Wave and Review of gravitational wave data analysis
DTSTART;VALUE=DATE-TIME:20260715T084000Z
DTEND;VALUE=DATE-TIME:20260715T090000Z
DTSTAMP;VALUE=DATE-TIME:20260720T190548Z
UID:indico-contribution-2501-8969@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Keiichiro Kubota ()\nGravitational waves emitted as 
 a binary black hole merges and settles into a stationary state are called 
 ringdown gravitational waves\, which provide key clues to exploring the na
 ture of strong gravity. These waves are conventionally modeled by a superp
 osition of damped oscillations known as quasi-normal modes (QNMs). Recentl
 y\, the potential contribution of a "direct wave" component has been debat
 ed\, but its mechanism remains largely unknown. We clarify this mechanism 
 through an analysis based on black hole perturbation theory. Furthermore\,
  we review recent studies from gravitational wave data analysis groups.\n\
 nhttps://indico.icrr.u-tokyo.ac.jp/event/1254/contributions/8969/
LOCATION:Kashiwa Large Seminar Room 601 (Kashiwa)
URL:https://indico.icrr.u-tokyo.ac.jp/event/1254/contributions/8969/
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BEGIN:VEVENT
SUMMARY:The current status of the gravitational wave detector KAGRA
DTSTART;VALUE=DATE-TIME:20260715T082000Z
DTEND;VALUE=DATE-TIME:20260715T084000Z
DTSTAMP;VALUE=DATE-TIME:20260720T190548Z
UID:indico-contribution-2501-8968@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Shoichi Oshino (ICRR)\nKAGRA is a 3 km cryogenic\, u
 nderground laser interferometric\ngravitational-wave detector in Kamioka\,
  Japan\, and a member of the\ninternational LIGO–Virgo–KAGRA network. 
 This talk reviews KAGRA's\nperformance and contribution during the fourth 
 observing run (O4).\n\nhttps://indico.icrr.u-tokyo.ac.jp/event/1254/contri
 butions/8968/
LOCATION:Kashiwa Large Seminar Room 601 (Kashiwa)
URL:https://indico.icrr.u-tokyo.ac.jp/event/1254/contributions/8968/
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