Zobrazeno 1 - 10
of 279
pro vyhledávání: '"De Plaa, J."'
Autor:
Bozzo, E., Huenemoerder, D. P., Falanga, M., Paltani, S., Costantini, E., de Plaa, J., Gu, L.
Stellar coronal sources have been observed in the past not only for their astrophysical interest in the field of binary system evolution and interaction, but also for their invaluable roles as benchmarks for plasma spectral models and as calibration
Externí odkaz:
http://arxiv.org/abs/2401.13290
Autor:
Spence, D., Bonamente, M., Nevalainen, J., Tuominen, T., Ahoranta, J., de Plaa, J., Liu, W., Wijers, N.
This paper presents an analysis of XMM X--ray spectra of the quasar 1ES 1553+113, in search for absorption lines from the intervening warm--hot intergalactic medium. A search for OVII, OVIII and NeIX resonance absorption lines was performed at eight
Externí odkaz:
http://arxiv.org/abs/2305.01587
Autor:
Zhang, X., Simionescu, A., Stuardi, C., van Weeren, R. J., Intema, H. T., Akamatsu, H., de Plaa, J., Kaastra, J. S., Bonafede, A., Brüggen, M., ZuHone, J., Ichinohe, Y.
Publikováno v:
A&A 656, A59 (2021)
Knowledge of X-ray shock and radio relic connection in merging galaxy clusters has been greatly extended in terms of both observation and theory over the last decade. ZwCl 2341+0000 is a double-relic merging galaxy cluster; previous studies have show
Externí odkaz:
http://arxiv.org/abs/2110.02094
Understanding and modelling astrophysical plasmas on atomic levels while taking into account various assumptions (for example, collisional ionisation equilibrium or photoionisation equilibrium) became essential with the progress of high-resolution X-
Externí odkaz:
http://arxiv.org/abs/2109.04184
Publikováno v:
A&A 642, A89 (2020)
Context: Chandra observations of the Abell 3411-3412 merging system have revealed an outbound bullet-like sub-cluster in the northern part and many surface brightness (SB) edges at the southern periphery, where multiple diffuse sources are also repor
Externí odkaz:
http://arxiv.org/abs/2007.15976
The intracluster medium (ICM) contains the vast majority of the baryonic matter in galaxy clusters and is heated to X-ray radiating temperatures. X-ray spectroscopy is therefore a key to understand both the morphology and the dynamics of galaxy clust
Externí odkaz:
http://arxiv.org/abs/1912.03944
Autor:
Mernier, F., Werner, N., Lakhchaura, K., de Plaa, J., Gu, L., Kaastra, J. S., Mao, J., Simionescu, A., Urdampilleta, I.
Accurate chemical abundance measurements of X-ray emitting atmospheres pervading massive galaxies, galaxy groups, and clusters provide essential information on the star formation and chemical enrichment histories of these large scale structures. Alth
Externí odkaz:
http://arxiv.org/abs/1911.09684
Autor:
Simionescu, A., Ettori, S., Werner, N., Nagai, D., Vazza, F., Akamatsu, H., Pinto, C., de Plaa, J., Wijers, N., Nelson, D., Pointecouteau, E., Pratt, G. W., Spiga, D., Vacanti, G., Lau, E., Rossetti, M., Gastaldello, F., Biffi, V., Bulbul, E., Collon, M. J., Herder, J. W. den, Eckert, D., Fraternali, F., Mingo, B., Pareschi, G., Pezzulli, G., Reiprich, T. H., Schaye, J., Walker, S. A., Werk, J.
The majority of the ordinary matter in the local Universe has been heated by strong structure formation shocks and resides in a largely unexplored hot, diffuse, X-ray emitting plasma that permeates the halos of galaxies, galaxy groups and clusters, a
Externí odkaz:
http://arxiv.org/abs/1908.01778
Autor:
Urdampilleta, I., Mernier, F., Kaastra, J. S., Simionescu, A., de Plaa, J., Kara, S., Ercan, E. N.
We present XMM-Newton/EPIC observations of six merging galaxy clusters and study the distributions of their temperature, iron (Fe) abundance and pseudo-entropy along the merging axis. For the first time, we focus simultaneously, and in a comprehensiv
Externí odkaz:
http://arxiv.org/abs/1906.08067
Autor:
Mernier, F., Biffi, V., Yamaguchi, H., Medvedev, P., Simionescu, A., Ettori, S., Werner, N., Kaastra, J. S., de Plaa, J., Gu, L.
Publikováno v:
Space Science Reviews (2018) Volume 214, Issue 8, article id. 129, 40 pp
Four decades ago, the firm detection of an Fe-K emission feature in the X-ray spectrum of the Perseus cluster revealed the presence of iron in its hot intracluster medium (ICM). With more advanced missions successfully launched over the last 20 years
Externí odkaz:
http://arxiv.org/abs/1811.01967