2014年11月29日土曜日

銀河と共に進化する超大質量ブラックホール


谷口義明
  • 日本物理学会誌 2014-11
http://www.jps.or.jp/books/gakkaishi/2014/11/69-11.html 


ブラックホール,中国語では,
黒洞

大栗先生の超弦理論入門


2014-11



とても不思議な「超弦理論」がどことなく理解できたような気がする。

2014年11月23日日曜日

2014年11月12日水曜日

Go Vietnam for Soken-dai

2014-11-13 -> 11-17
Hanoi and HCMC

http://www.jasso.go.jp/study_j/info_fair_vietnam_2014.html
に総研大として参加。

同行者:
田村理事
http://www.minpaku.ac.jp/aboutus/pe/tamura/index

三原教授 (KEK)

総研大の担当者3人。

通訳の大西さん。

訪問先:

VNUHCM, University of Science

2014年11月6日木曜日

James Webb Space Telescope: The First Light Machine

ISAS
       Space Science Seminar
Date:       15:30-16:30, 6th of November (Thu), 2014
Place:      Bldg-newA 2F Meeting room A
Speaker:    H. Philip Stahl (NASA/MSFC, USA)
Title:      James Webb Space Telescope:  The First Light Machine

Abstract:
Scheduled to begin its 10 year mission after 2018, the James Webb Space
Telescope (JWST) will search for the first luminous objects of the
Universe to help answer fundamental questions about how the Universe
came to look like it does today.  At 6.5 meters in diameter, JWST will
be the world’s largest space telescope.  This talk reviews science
objectives for JWST and how they drive the JWST architecture, e.g.
aperture, wavelength range and operating temperature.  Additionally, the
talk provides an overview of the JWST primary mirror technology
development and fabrication status.

2014年11月5日水曜日

The Power of Topology in Superstring Theory

ISAS
       Space Science Colloquium
Date:       16:30-17:30, 5th of November (Wed), 2014
Place:      Conference room (Main building 2F)
Speaker:    Hiroshi Oguri (Caltech, USA)
Title:      The Power of Topology in Superstring Theory


Abstract:
Superstring theory is the leading candidate for the ultimate unified
theory of all the matters and forces in nature. It postulates that
fundamental building blocks are not point particles but strings, and it
is defined in (9+1)-dimensional spacetime. The rich structure in
particle physics in our (3+1) dimensions, such as quark and lepton
flavors, gauge forces, and the Higgs boson to break the gauge symmetry,
is expected to emerge from the geometry of the extra 6 (= 9 - 3)
dimensions, called a Calabi-Yau space. We want to derive quantitative
predictions on our universe from the geometry of the Calabi-Yau space.
However, the Calabi-Yau space is so complicated that we do not even know
an expression for its metric, namely how to measure the distance between
two points on the space. Given this limitation, what can we do? In this
talk, I will describe techniques we have developed to overcome this
difficulty and applications of these techniques to problems in physics
and mathematics.

2014年11月4日火曜日

Exploring the Dark Sector with Euclid and WFIRST-AFTA

ISAS
       Space Science Colloquium
Date:       16:30-17:30, 4th of November (Tue), 2014
Place:      Conference room (Main building 2F)
Speaker:    Jason Rhodes (NASA/JPL, USA)
Title:      Exploring the Dark Sector with Euclid and WFIRST-AFTA

Abstract:
Dark energy, the name given to the cause of the accelerating expansion
of the Universe, is one of the most profound mysteries in modern
science. Current cosmological models hold that dark energy is currently
the dominant component of the Universe, but the exact nature of dark
energy remains poorly understood. There are ambitious ground-based
surveys underway that seek to understand dark energy and NASA is
participating in the development of significantly more ambitious
space-based surveys planned for the next decade. NASA is providing
mission-enabling technology to the European Space Agency‘s (ESA) 
Euclid mission in exchange for US scientists to participate in the Euclid
mission. NASA is also developing the Wide Field Infrared Survey
Telescope-Astrophysics Focused Telescope Asset (WFIRST-AFTA) mission for
possible launch in ~2023. WFIRST was the highest ranked space mission in
the Astro2010 Decadal Survey and the AFTA incarnation of the WFIRST
design uses a 2.4m space telescope to go beyond what the Decadal Survey
envisioned for WFIRST. Understanding dark energy is one of the primary
science goals of WFIRST-AFTA. I’ll discuss the status of Euclid and
WFIRST and comment on the complementarity of the two missions. I’ll also
briefly discuss other, exciting science goals for WFIRST, including a
search for exoplanets using both microlensing and a dedicated
coronagraph for exoplanet imaging.

2014年11月3日月曜日

宇宙学校・とうきょう 2014-11-03

http://www.isas.jaxa.jp/j/topics/event/2014/1103_tokyo.shtml


(2015-01-22)
講師として参加しました。
「宇宙の見えないもの」、
暗黒物質や暗黒エネルギーについて説明しました。
「すざく」の成果や間もなく打ち上げ予定のASTRO-H衛星についても語りました。