Galaxy clusters: physics laboratories and cosmological probes

Many interesting new results,

Splash-back radius,
AGN feedbacks,
SZ,
cosmology,

Dark matter: What's the matter?

http://www.nature.com/nature/journal/v537/n7622_supp/full/537S194a.html

New theory of gravity might explain dark matter

2016-11-08
http://www.uva.nl/en/news-events/press-office/press-releases/press-releases/press-releases/content/folder/2016/11/new-theory-of-gravity-might-explain-dark-matter.html


https://arxiv.org/abs/1611.02269

Intermediate Science Results Papers

http://planck.cf.ac.uk/science/intermediate-results-detailed

Record-breaking Galaxy Cluster Discovered

http://chandra.harvard.edu/press/16_releases/press_083016.html

a redshift of z=2.506 !

GAIA'S BILLION-STAR MAP HINTS AT TREASURES TO COME

http://sci.esa.int/gaia/58272-gaia-s-billion-star-map-hints-at-treasures-to-come/

Hunting the Sterile Neutrino

http://physics.aps.org/articles/v9/94

Hitomi constraints on the 3.5 keV line in the Perseus galaxy cluster

http://arxiv.org/abs/1607.07420

The quiescent intracluster medium in the core of the Perseus cluster

http://www.nature.com/nature/journal/v535/n7610/full/nature18627.html
http://adsabs.harvard.edu/abs/2016Natur.535..117H

In news articles:

https://www.nasa.gov/feature/goddard/2016/hitomi-mission-charts-hot-winds-of-a-galaxy-cluster-for-the-first-time

http://sci.esa.int/hitomi/58045-galaxy-cluster-keeps-calm-and-carries-on-radiating-x-rays/

http://www.cam.ac.uk/research/news/dead-satellite-finds-a-calm-centre-at-the-heart-of-brightest-galaxy-cluster-in-the-sky



http://news.biglobe.ne.jp/domestic/0707/jj_160707_8428081918.html
銀河団ガスの動き検出＝「ひとみ」試験観測中の成果―ＪＡＸＡ

http://news.tv-asahi.co.jp/news_society/articles/000078598.html

http://www.isas.jaxa.jp/topics/000282.html

Prof. Tune Kamae

http://universal-access.jp

2015-01


http://www.itrc.net/uat/workshop201601.html

Camp at Maryland, USA

2016-06-20 to 06-22

http://cmns.umd.edu/directions-physical-sciences-complex

http://breakthroughinitiatives.org/Initiative/3

http://breakthroughinitiatives.org/News/4

Hitomi Operation at USC 2016 March

2016-03-22 -> 2016-04-03

hard days and nights.



https://thepage.jp/detail/20160401-00000004-wordleaf


http://www.jaxa.jp/press/2016/03/20160327_hitomi_j.html

see also

https://www.instagram.com/taka.tamu/

Line emissivity from ATOMDB by python

#!/usr/bin/env python


import pyatomdb
import sys

# He-like Fe
Z = 26
z1 = 25
upind = 7
loind = 1
linefile=""

emis = pyatomdb.atomdb.get_line_emissivity(Z,z1, upind, loind)

for t, e, dens in zip(emis['kT'], emis['epsilon'], emis['dens']):
    print t,dens, e
 
 

PyAtomDB

http://atomdb.readthedocs.org/en/latest/


python module for ATOMDB.
I could easily install and make a spectrum and line list.
This is nice.
Thank for  Adam Foster.

Go to Cambridge

http://www.ast.cam.ac.uk

http://www.sekai1.co.jp/example/02.html

山田科学振興財団：精密X線分光観測による銀河団の進化と暗黒物質の探査

http://www.yamadazaidan.jp/jigyo/tyouki.html#02

Hitomi, our new friend

http://www.jaxa.jp/topics/2016/index_j.html#news6956

http://www.jaxa.jp/press/2016/02/20160217_hitomi_j.html

http://apod.nasa.gov/apod/ap160218.html

Observation of Gravitational Waves from a Binary Black Hole Merger

2016-02-12
https://dcc.ligo.org/LIGO-P150914/public


http://planck.exblog.jp/25286110/

This is really amazing.
Great jobs of many people.

http://www.nature.com/news/gravitational-waves-how-ligo-forged-the-path-to-victory-1.19382?WT.mc_id=SFB_NNEWS_1508_RHBox

Euler, a genuis

* Biography
http://press.princeton.edu/titles/10531.html

Leonhard Euler:Mathematical Genius in the EnlightenmentRonald S. Calinger


* economist, 2016-01-09

* http://eulerarchive.maa.org

* https://ja.wikipedia.org/wiki/レオンハルト・オイラー

科学衛星読みもの by Yuasa

http://www-utheal.phys.s.u-tokyo.ac.jp/~yuasa/wiki/index.php/科学衛星読みもの

特に日本のX線天文衛星について。

copy

すざく」衛星をより理解して、楽しく、意義を感じながら、衛星運用当番や、日々のデータ解析を行うための、読みもの。

現象論的な説明ではなくて、なぜそうなっているか、背景にどういう歴史があるかに重点をおいて、図・写真をたくさん使って説明する。

ASTRO-H in news

* 2015-12-02
http://news.mynavi.jp/articles/2015/12/02/astro-h/
報道公開を基にしている。
「すざく」でのXRSの失敗原因などについても説明されている。

Now there’s a look in your eyes, like black holes in the sky

The economist

The universe’s darkest denizens are being dragged into the light

Jan 9th 2016  | KISSIMMEE, FLORIDA | From the print edition

http://goo.gl/SvReMA

(copy)

Working out how black holes affect galactic growth, though, is not the same as finding out what is happening in the vicinity of the holes themselves. Here, matter is circling close to a black hole’s point of no return, the “event horizon” whose radius was described by Schwarzschild’s calculations. And next month, JAXA, Japan’s space agency, will launch Astro-H, a telescope that will help to do this. It can detect X-rays of exceptionally high energies. As material slips ever closer to the event horizon, the precise details of its X-ray output are a signal of how it is moving. Astro-H will be able to measure this radiation, and thus infer that motion with unprecedented precision. This will permit researchers to measure unambiguously, for the first time, how fast a black hole is spinning. That, in turn, permits tests of Einstein’s general theory of relativity—the very theory that Schwarzschild used to put black holes on solid mathematical ground—that have remained out of reach until now.

ASTRO-H JAXA page

http://fanfun.jaxa.jp/countdown/astro_h/index.html

from
http://jda-strm.tksc.jaxa.jp/archive/photo/P100010525/75e3f794d404a7e6a7c070d94dba2a51.jpg