Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Bonamente, Max"'
The paper presents a new statistical method that enables the use of systematic errors in the maximum-likelihood regression of integer-count Poisson data to a parametric model. The method is primarily aimed at the characterization of the goodness-of-f
Externí odkaz:
http://arxiv.org/abs/2407.12132
Autor:
Bonamente, Max, Nevalainen, Jukka
We present spatially-resolved spectroscopy of the galaxy cluster Abell S1101, also known as Sersic 159-03, with Chandra, XMM-Newton and ROSAT, and investigate the presence of soft X-ray excess emission above the contribution from the hot intra-cluste
Externí odkaz:
http://arxiv.org/abs/1107.0932
Autor:
Bulbul, G. Esra, Hasler, Nicole, Bonamente, Max, Joy, Marshall, Marrone, Daniel, Miller, Amber, Mroczkowski, Tony
Recent theoretical studies predict that the inner regions of galaxy clusters may have an enhanced helium abundance due to sedimentation over the cluster lifetime. If sedimentation is not suppressed (e.g., by tangled magnetic fields), this may signifi
Externí odkaz:
http://arxiv.org/abs/1102.5363
Publikováno v:
Astrophys.J.696:1886-1891,2009
RASS data near the North Galactic Pole was analyzed in order to study the large-scale distribution of soft X-ray emission from the Coma cluster. These RASS data constitute the only available X-ray observations of Coma that feature an in situ -- tempo
Externí odkaz:
http://arxiv.org/abs/0903.3067
Autor:
Lieu, Richard, Bonamente, Max
Publikováno v:
Astrophys.J.698:1301-1306,2009
The observational and theoretical status of the search for missing cosmological baryons is summarized, with a discussion of some indirect methods of detection. The thermal interpretation of the cluster soft X-ray and EUV excess phenomenon is examined
Externí odkaz:
http://arxiv.org/abs/0903.3066
Publikováno v:
Astron.Astrophys.443:29,2005
Recent observations with the XMM-Newton satellite confirmed the existence of the soft excess phenomenon in galaxy clusters, earlier discovered in several EUVE, ROSAT and BeppoSAX observations. Among the clusters for which XMM has reported detection o
Externí odkaz:
http://arxiv.org/abs/astro-ph/0512591
Autor:
Bonamente, Max, Lieu, Richard
Clusters of galaxies are strong emitters of EUV and soft X-rays substantially in excess of the contribution from the hot intra-cluster medium at X-ray temperatures. After the initial discovery of EUV excess emission in the Virgo cluster, the phenomen
Externí odkaz:
http://arxiv.org/abs/astro-ph/0012084
The Virgo and A1795 clusters of galaxies were re-observed by EUVE with {\it in situ} background measurements by pointing at small offsets. Earlier, a similar re-observational strategy applied to the cluster A2199 revealed that the background radial p
Externí odkaz:
http://arxiv.org/abs/astro-ph/0011186
Various independent ways of constraining key cosmological parameters yielded a consensus range of values which indicates that at the present epoch the bulk of the universe's baryons is in the form of a warm ($\sim$ 10$^6$ K) gas - a temperature regim
Externí odkaz:
http://arxiv.org/abs/astro-ph/0010610
The discovery of EUV and soft X-ray excess emission in clusters of galaxies (the cluster soft-excess phenomenon) challenged the notion of the hot ($\sim 10^{7-8}$ K) gas as the only dominant thermal component of the intracluster medium (ICM). The spa
Externí odkaz:
http://arxiv.org/abs/astro-ph/0007338