Results 81 to 90 of about 1,488 (191)

Cross Calibration of Galaxy Cluster Temperatures Measured with NuSTAR, XMM-Newton, and Chandra

The Astrophysical Journal
The use of galaxy clusters to constrain cosmology is limited in part due to uncertainties in derived cluster masses, which often depend on the gas temperature. Unfortunately, there exists a longstanding discrepancy in temperature measurements of the same
Fiona Lopez, Daniel R. Wik, Cicely Potter, Randall A. Rojas Bolivar, Ayşegül Tümer, Dominique Eckert, Fabio Gastaldello, Brian W Grefenstette, Kristin Madsen, Ben Maughan, Eric D. Miller, Gerrit Schellenberger, A. N. Wallbank   +12 more
doaj   +1 more source

Extragalactic and cosmological tests of gravity theories with additional scalar or vector fields

, 2011
Despite the many successes of the current standard model of cosmology on the largest physical scales, it relies on two phenomenologically motivated constituents, cold dark matter and dark energy, which account for approximately 95% of the energy-matter ...
Feix, Martin
core  

Pacific Ocean Neutrino Experiment

Universe
Following the breakthrough discoveries of very-high-energy neutrinos of astrophysical origin by IceCube, a new field of research, neutrino astronomy, was established in the previous decade.
Paweł Malecki
doaj   +1 more source

High-energy gamma ray astronomy

, 2008
High-energy gamma-ray astronomy is a field under very rapid development, addressing issues of astrophysics, of astropartilce physics, and of fundamental physics.
Hofmann, Werner, Hofmann, W.
core   +1 more source

A Catalog of Mid-infrared Variable Sources from unTimely

The Astrophysical Journal Supplement Series
The Wide-field Infrared Survey Explorer and NEOWISE missions have provided the only mid-infrared all-sky time-domain data, opening a unique observational window for variability studies.
Zihan Kang, Jingyi Zhang, Yanxia Zhang, Changhua Li, Xiao Kong, Minzhi Kong, Jinghang Shi, Shirui Wei, Xue-Bing Wu, Ning Jiang   +9 more
doaj   +1 more source

Spatial Distribution of Intracluster Light versus Dark Matter in Horizon Run 5

The Astrophysical Journal
One intriguing approach for studying the dynamical evolution of galaxy clusters is to compare the spatial distributions among various components such as dark matter, member galaxies, gas, and intracluster light (ICL).
Jaewon Yoo, Changbom Park, Cristiano G. Sabiu, Ankit Singh, Jongwan Ko, Jaehyun Lee, Christophe Pichon, M. James Jee, Brad K. Gibson, Owain Snaith, Juhan Kim, Jihye Shin, Yonghwi Kim, Hyowon Kim   +13 more
doaj   +1 more source

Deflection of ultra-high energy heavy nuclei in the Galactic magnetic field

EPJ Web of Conferences, 2013
In this work, we investigate the impacts a potential shift towards a heavy composition at the end of the cosmic ray (CR) spectrum would have on the future data [1, 2].
Semikoz Dmitri, Sigl Günter, Giacinti Gwenael, Kachelrieß Michael   +3 more
doaj   +1 more source

The formation of satellite galaxies and their associated black holes [PDF]

, 2006
Not ...
Libeskind, Noam Isaac
core  

Fundamental astronomy

, 2017
Now in its sixth edition this successful undergraduate textbook gives a well-balanced and comprehensive introduction to the topics of classical and modern astronomy. While emphasizing both the astronomical concepts and the underlying physical principles,
Donner, Karl, Oja, Heikki, Poutanen, Markku, Kröger, Pekka, Karttunen, Hannu   +4 more
core   +1 more source

Future plans for the Telescope Array experiment

EPJ Web of Conferences, 2013
The Telescope Array (TA) experiment is the world's first and the only air shower detector to be directly calibrated by an on-site accelerator beam. For wider and deeper understanding of cosmic rays via high precision measurements, we have several future ...
Ogio Shoichi
doaj   +1 more source