|
|
Sextans Dwarf Spheroidal Galaxy
(Preview)
Title: The Chemical Signature of a Relic Star Cluster in the Sextans Dwarf Spheroidal Galaxy - Implications for Near-Field Cosmology Authors: Torgny Karlsson, Joss Bland-Hawthorn, Ken Freeman, Joe Silk We present tentative evidence for the existence of a dissolved star cluster in the Sextans d...
|
Blobrana
|
1
|
|
|
|
|
|
Blazars
(Preview)
A New Class of Extragalactic Objects A blazar is a galaxy with an intensely bright central nucleus containing a supermassive black hole, much like a quasar. The difference is that a blazar can emit light with extremely high energy gamma rays that are sometimes over a hundred million times more energ...
|
Blobrana
|
0
|
|
|
|
|
|
HCG 62
(Preview)
Title: A Deep Chandra Observation of the AGN Outburst and Merger in Hickson Compact Group 62 Authors: D. A. Rafferty, L. Bîrzan, P. E. J. Nulsen, B. R. McNamara, W. N. Brandt, M. W. Wise, H. J. A. Röttgering We report on an analysis of new Chandra data of the galaxy group HCG 62, well known for possessing c...
|
Blobrana
|
0
|
|
|
|
|
|
Early Cosmology
(Preview)
Title: Conservative Constraints on Early Cosmology: an illustration of the Monte Python cosmological parameter inference code Authors: Benjamin Audren, Julien Lesgourgues, Karim Benabed, Simon Prunet Models for the latest stages of the cosmological evolution rely on a less solid theoretic...
|
Blobrana
|
0
|
|
|
|
|
|
Cosmic X-ray background
(Preview)
Title: Spectrum of the unresolved cosmic X ray background: what is unresolved 50 years after its discovery Authors: A. Moretti (1), S. Vattakunnel (2), P.Tozzi (2), R. Salvaterra (3), P. Severgnini (1), D. Fugazza (1), F. Haardt (4,5), R. Gilli (6), ((1) INAF-Brera,(2) INAF-Trieste, (3) INAF-IA...
|
Blobrana
|
0
|
|
|
|
|
|
Abell 2261
(Preview)
Title: CLASH: Precise New Constraints on the Mass Profile of Abell 2261 Authors: Dan Coe, Keiichi Umetsu, Adi Zitrin, Megan Donahue, Elinor Medezinski, Marc Postman, Mauricio Carrasco, Timo Anguita, Margaret J. Geller, Kenneth J. Rines, Antonaldo Diaferio, Michael J. Kurtz, Larry Bradley, An...
|
Blobrana
|
1
|
|
|
|
|
|
Infrared background glow
(Preview)
NASA's Spitzer Sees Light of Lonesome Stars A new study using data from NASA's Spitzer Space Telescope suggests a cause for the mysterious glow of infrared light seen across the entire sky. It comes from isolated stars beyond the edges of galaxies. These stars are thought to have once belonged to the...
|
Blobrana
|
1
|
|
|
|
|
|
QSO J1148+5251
(Preview)
An intense star-forming region that produces a combined mass of more than one thousand solar masses a year has been found 12.8 billion light-years from Earth. The so-called 'hyper-starburst' is part of a young, quasar-containing galaxy. Because it is so far away, we can only see how the galaxy appe...
|
Blobrana
|
6
|
|
|
|
|
|
Abell 1995
(Preview)
Title: Structure of Abell 1995 from optical and X-ray data: a galaxy cluster with an elongated radio halo Authors: W. Boschin, M. Girardi, R. Barrena Abell 1995 is a puzzling galaxy cluster hosting a powerful radio halo, but it has not yet been recognised as a obvious cluster merger, as usually expec...
|
Blobrana
|
0
|
|
|
|
|
|
NGC 604
(Preview)
Credit: X-ray: NASA/CXC/CfA/R. Tuellmann et al.; Optical: NASA/AURA/STScI A new study unveils NGC 604, the largest region of star formation in the nearby galaxy M33, in its first deep, high-resolution view in X-rays. This composite image from Chandra X-ray Observatory data (colored blue), com...
|
Blobrana
|
1
|
|
|
|
|
|
PKS 0637-752
(Preview)
Title: HST observations of the quasar PKS 0637-752: equipartition electron-proton jet from the most complete spectral coverage to date Authors: Kushal T. Mehta, Markos Georganopoulos, Eric S. Perlman, Charles A. Padgett, George Chartas We present new NICMOS and ACS observations of the quasar...
|
Blobrana
|
1
|
|
|
|
|
|
ULAS J1234+0907
(Preview)
Giant black holes lurking in survey data Scientists at the University of Cambridge have used cutting-edge infrared surveys of the sky to discover a new population of enormous, rapidly growing supermassive black holes in the early Universe. The black holes were previously undetected because the...
|
Blobrana
|
0
|
|
|
|
|
|
Swift J164449.3+573451
(Preview)
Black hole caught grabbing a starry treat On 28 March, NASA's Swift telescope detected several bright bursts of X-rays coming from a patch of the sky where no X-rays had been detected before. Now two teams, one led by David Burrows of Pennsylvania State University in University Park and the other by A...
|
Blobrana
|
2
|
|
|
|
|
|
Seyfert 1 Galaxy 1H0707-495
(Preview)
Using new data from ESA's XMM-Newton spaceborne observatory, astronomers have probed closer than ever to a supermassive black hole lying deep at the core of a distant active galaxy. The galaxy - known as 1H0707-495 - was observed during four 48-hr-long orbits of XMM-Newton around Earth, starting...
|
Blobrana
|
4
|
|
|
|
|
|
BAL quasars
(Preview)
XMM-Newton has been surprised by a rare type of galaxy, from which it has detected a higher number of X-rays than thought possible. The observation gives new insight into the powerful processes shaping galaxies during their formation and evolution. Scientists working with XMM-Newton were look...
|
Blobrana
|
2
|
|
|
