The remnant of a merger between two dwarf galaxies in Andromeda II

http://www.nature.com/nature/journal/v507/n7492/full/nature12995.html

自然科学者のための数学概論 増訂版改版

1954年　第1刷

1983　改版１刷

2013年　第33 刷発行

まさに古典的名著。

First Direct Evidence of Cosmic Inflation

http://www.cfa.harvard.edu/news/2014-05

http://www.nature.com/news/b-mode-1.14884

http://planck.exblog.jp/21835733/

by Ooguri-san

http://nationalgeographic.jp/nng/article/20140328/390221/

by Komatsu-san

X-ray survey of the nearby and relaxed cluster Abell2199

chandra proposal cycle 16

submitted a plan.

"X-ray survey of the nearby and relaxed cluster Abell2199"
 has been received by the Chandra X-Ray Center and assigned the 
Proposal Number: 16800331. 

Abell 2199 images

http://photojournal.jpl.nasa.gov/catalog/PIA17253

Suzaku-MAXI 2014

http://wwwxray.ess.sci.osaka-u.ac.jp/SuzakuMAXI2014/

My talk:
X-ray measurements of gas bulk motions in galaxy clusters

X-ray studies of velocity structures of the intracluster medium is one of the primary goals for future X-ray missions. High resolution spectroscopy will provide measurements of energy distributions not only in thermal but also in kinematic forms. These provide understanding of cluster formation and reductions of systematic uncertainties in cluster total masses for precise cosmology. Using Suzaku we have detected a motion of a sub component with a velocity of about 1500 km/s for the first time by X-ray of a X-ray bright merging cluster, Abell2256 (Tamura et al. 2011). We also detected a hint of bulk motion in the Perseus cluster core (Tamura et al. 2013). In addition we attempted to measure 'X-ray gas redshift' of clusters. We found that gas are moving in pair with galaxies at least in X-ray bright central regions. In addition to these new Suzaku results, future studies of gas bulk motion along with turbulent motions by X-ray micro calorimeter onboard ASTRO-H will be discussed.

History of Doppler effect.

http://en.wikipedia.org/wiki/Doppler_effect

C. H. D. Buys Ballot
http://en.wikipedia.org/wiki/C._H._D._Buys_Ballot

http://essays-eve.blogspot.jp/2010/05/toast-and-trumpets.html