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International KEK-Cosmo and APCosPA Winter School 2019

Primordial Black Hole
22nd — 24th January 2019
Theory Center, IPNS, KEK, Oho 1-1, Tsukuba 305-0801, Japan

Photo by Hiroko Tada

https://research.kek.jp/people/kohri/KEKCosmo2019.htm

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Credit: KEK Student Program 2018

After aLIGO detected the gravitational wave (GW) produced by mergers of binary black
holes (BHs), researchers have aggressively studied the origin of the BHs with masses ofthe order of O(10) M◎. In addition to astrophysical origins of BHs, one of the attractive
candidates of those massive BHs should be Primordial Black Holes (PBHs), which were
produced in the early Universe, e.g., through collapses of large curvature perturbation atsmall scales produced by inflation, not through normal collapsing stars. In addition tothe candidates of the sources for the GW events, it is exciting that PBHs can be also
whole or in part of dark matter. Therefore, nowadays PBHs have become common
topics to be studied in astrophysics, cosmology and particle physics.
So far a variety of researches on PBHs have been reported within a couple of years. Forstudents and young postdocs, it should have been a challenging task to catch up withrecent topics related with PBHs. Therefore, we organize this school to study the current
status of PBHs.
We ask each lecturer to cover both basic topics and cutting-edge researches. The numberof audiences will be restricted due to the limited size of lecture rooms. The lecturers canuse white boards as well as projectors, although we may ask the lecturers to mainly give
white-board lectures, as these are easier for audiences to digest, in particular with regard
to equations.
Topics to be discussed
https://research.kek.jp/people/kohri/KEKCosmo2019.htm

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1) Mechanisms for Formations of PBHs
2) Cosmological scenarios to produce PBHs
3) Observational constraints on PBHs
4) Astrophysical Black Holes
Invited speakers include:
Tomohiro Harada (Rikkyo U, Japan), “Mechanisms for Formations of PBHs”
Teruaki Suyama (Tokyo Tech, Japan), “Cosmological formation rates of binary PBHs”
Ryuichi Takahashi (Hirosaki U, Japan), “Gravitational Lensing and BHs”
Kohei Inayoshi (Peking U, China / Columbia U, USA), “Pop.III / II stars and binary BH
formations”
Program
http://research.kek.jp/people/kohri/program2019.htm
Workshop attendees:
Aimed at graduate students, and postdocs and junior faculties
Workshop fees
Reception: 1,000 yen
Drinks and snacks: 300 yen
Deadline for the registration
21st December 2018
Registration form and application form for wifi
http://research.kek.jp/people/kohri/registrationKEKCosmo2019.htm
Covering lodging expenses
We cover lodging expenses for participants who stay at the KEK dormitory on campus.
If you need the support, email to the secretary with writing your detailed schedule,
please.
Inquiries:
Ms. Tomoko Numata, Secretary, Theory Center, IPNS, KEK
tomokon-AT-post.kek.jp
Venue:
Room 3 on the ground floor at Kenkyu-Honkan Building on the KEK Tsukuba campus.
https://research.kek.jp/people/kohri/KEKCosmo2019.htm

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http://www.kek.jp/en/CometoKEK/
SOC
Kazunori Kohri (KEK, Chair)
Kunihito Ioka (YITP, Kyoto U)
Satoshi Iso (KEK)
Masahiro Kawasaki (ICRR, U Tokyo)
Ryuichiro Kitano (KEK)
Koutarou Kyutoku (KEK)
Takahiko Matsubara (KEK)
Mihoko M. Nojiri (KEK)
Yuuiti Sendouda (Hirosaki U)
Jun’ichi Yokoyama (RESCEU, U Tokyo)
Chulmoon Yoo (Nagoya U)
LOC
Kazunori Kohri (KEK, Chair)
Takuya Hasegawa (KEK)
Nagisa Hiroshima (ICRR, U Tokyo / KEK)
Takafumi Kokubu (Rikkyo U)
Koutarou Kyutoku (KEK)
Takahiko Matsubara (KEK)
Taro Mori (KEK)
Takahiro Terada (KEK)
Sai Wang (KEK)
http://www2.kek.jp/theory-center/theory_e/about-the-center/
Our project and past workshops / schools:
http://research.kek.jp/people/kohri/project2016E.html
Sponsors:
The Asia Pacific Center for Theoretical Physics (APCTP) program Category-4
The KEK Project Research Grant 2018
The KEK Student Program 2018
The JSPS grant (Kiban A) “21cm line observations and future astrophysics”(JP17H01131)
The MEXT grant “Leading Initiative for Excellent Young Researchers（LEADER）”
The MEXT grant (open applications) on Innovative Area “Theoretical researches toobserve Primordial Black Holes” (JP18H04594)
https://research.kek.jp/people/kohri/KEKCosmo2019.htm

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The MEXT grant on Innovative Area “The origin for the accelerated expansion of theUniverse” A02 (JP15H05889)
Endorsed by
Division of Astrophysics, Cosmology, and Gravitation (DACG), Association of Asia
Pacific Physical Societies (AAPPS)
Asia Pacific Organization for Cosmology and Particle Astrophysics (APCosPA)

https://research.kek.jp/people/kohri/KEKCosmo2019.htm

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