Zobrazeno 1 - 10
of 289
pro vyhledávání: '"Lieu, R."'
This paper provides a new analysis of ROSAT observations of the Coma cluster, to determine the amount of soft X--ray radiation in excess of the contribution from the hot intra--cluster medium. The re--analysis is made possible by a high--resolution s
Externí odkaz:
http://arxiv.org/abs/2205.09466
Publikováno v:
Clinical, Cosmetic and Investigational Dermatology, Vol Volume 16, Pp 1109-1121 (2023)
Duy Toan Pham,1 Quoc Cuong Huynh,1 Ruby Lieu,2 Viet Bach Nguyen,3 Van De Tran,4 Bui Thi Phuong Thuy5 1Department of Chemistry, College of Natural Sciences, Can Tho University, Can Tho, 900000, Vietnam; 2Faculty of Commerce, Van Lang University, Ho Ch
Externí odkaz:
https://doaj.org/article/c464ee5626de452182c933ae7222386d
Publikováno v:
Astron.Astrophys.527:A80,2011
(Abridged) We study the predictions of various annihilating Dark Matter (DM) models in order to interpret the origin of non-thermal phenomena in galaxy clusters. We consider three neutralino DM models with light (9 GeV), intermediate (60 GeV) and hig
Externí odkaz:
http://arxiv.org/abs/1004.1286
Chandra ACIS-S observations of the galaxy cluster A3112 feature the presence of an excess of X-ray emission above the contribution from the diffuse hot gas, which can be equally well modeled with an additional non-thermal power-law model or with a lo
Externí odkaz:
http://arxiv.org/abs/0707.0992
We present an analysis of new Suzaku data and archival data from XMM-Newton of the cluster of galaxies Sersic 159-03, which has a strong soft X-ray excess emission component. The Suzaku observation confirms the presence of the soft excess emission, b
Externí odkaz:
http://arxiv.org/abs/0704.0475
WMAP's detection of the Sunyaev-Zel'dovich effect at a much reduced level among several large samples of rich clusters is interpreted in terms of conventional physics. It has been suggested that the central soft X-ray and EUV excess found in some clu
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607304
Autor:
de Plaa, J., Kaastra, J. S., Mendez, M., Tamura, T., Bleeker, J. A. M., Peterson, J. R., Paerels, F. B. S., Bonamente, M., Lieu, R.
Publikováno v:
Adv.Space Res. 36 (2005) 601-604
We present results from a new 120 ks XMM-Newton observation of the cluster of galaxies Sersic 159-03. In this paper we focus on the high-resolution X-ray spectra obtained with the Reflection Grating Spectrometer (RGS). The spectra allow us to constra
Externí odkaz:
http://arxiv.org/abs/astro-ph/0504262
Publikováno v:
Astrophys.J. 629 (2005) 192-203
Several nearby clusters exhibit an excess of soft X-ray radiation which cannot be attributed to the hot virialized intra-cluster medium. There is no consensus to date on the origin of the excess emission: it could be either of thermal origin, or due
Externí odkaz:
http://arxiv.org/abs/astro-ph/0504092
The confirmation of the cluster soft excess (CSE) by XMM-Newton has rekindled interest as to its origin. The recent detections of CSE emission at large cluster radii together with reports of OVII line emission associated with the CSE has led many aut
Externí odkaz:
http://arxiv.org/abs/astro-ph/0409661