Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Zandanel, Fabio"'
Autor:
Zandanel, Fabio, Fornasa, Mattia, Prada, Francisco, Reiprich, Thomas H., Pacaud, Florian, Klypin, Anatoly
Cosmological simulations are fundamental tools to study structure formation and the astrophysics of evolving structures, in particular clusters of galaxies. While hydrodynamical simulations cannot sample efficiently large volumes and explore differen
Externí odkaz:
http://arxiv.org/abs/1804.07063
Radio relics, elongated, non-thermal, structures located at the edges of galaxy clusters, are the result of synchrotron radiation from cosmic-ray electrons accelerated by merger-driven shocks at the cluster outskirts. However, X-ray observations of s
Externí odkaz:
http://arxiv.org/abs/1712.04539
We present a systematic phenomenological study focused on the time evolution of the non-thermal radiation - from radio waves to gamma rays - emitted by typical supernova remnants via hadronic and leptonic mechanisms, for two classes of progenitors: t
Externí odkaz:
http://arxiv.org/abs/1710.05038
Autor:
Itahana, Madoka, Takizawa, Motokazu, Akamatsu, Hiroki, van Weeren, Reinout J., Kawahara, Hajime, Fukazawa, Yasushi, Kaastra, Jelle S., Nakazawa, Kazuhiro, Ohashi, Takaya, Ota, Naomi, Röttgering, Huub J. A., Vink, Jacco, Zandanel, Fabio
We present the results of Suzaku and Chandra observations of the galaxy cluster RXC J1053.7+5453 ($z=0.0704$), which contains a radio relic. The radio relic is located at the distance of $\sim 540$ kpc from the X-ray peak toward the west. We measured
Externí odkaz:
http://arxiv.org/abs/1708.07004
Publikováno v:
Phys. Rev. D 95, 123012 (2017)
Dwarf spheroidals are low-luminosity satellite galaxies of the Milky Way highly dominated by dark matter (DM). Therefore, they are prime targets to search for signals from dark matter annihilation using gamma-ray observations. While the typical assum
Externí odkaz:
http://arxiv.org/abs/1609.03509
Autor:
Fornasa, Mattia, Cuoco, Alessandro, Zavala, Jesus, Gaskins, Jennifer M., Sanchez-Conde, Miguel A., Gomez-Vargas, German, Komatsu, Eiichiro, Linden, Tim, Prada, Francisco, Zandanel, Fabio, Morselli, Aldo
Publikováno v:
Phys. Rev. D 94, 123005 (2016)
The isotropic gamma-ray background arises from the contribution of unresolved sources, including members of confirmed source classes and proposed gamma-ray emitters such as the radiation induced by dark matter annihilation and decay. Clues about the
Externí odkaz:
http://arxiv.org/abs/1608.07289
Publikováno v:
Phys. Rev. Lett. 115, 221101 (2015)
Mounting evidence suggests that the TeV-PeV neutrino flux detected by the IceCube telescope has mainly an extragalactic origin. If such neutrinos are primarily produced by a single class of astrophysical sources via hadronuclear ($pp$) interactions,
Externí odkaz:
http://arxiv.org/abs/1509.02444
Cosmic-ray (CR) protons can accumulate for cosmological times in clusters of galaxies. Their hadronic interactions with protons of the intra-cluster medium (ICM) generate secondary electrons, gamma-rays and high-energy neutrinos. In light of the high
Externí odkaz:
http://arxiv.org/abs/1509.01367
Autor:
Colin, Pierre, Zandanel, Fabio, Acosta, Monica Vazquez, Palacio, Joaquim, Pfrommer, Christoph, Pinzke, Anders
Galaxy clusters are the largest and most massive gravitationally bound structures known in the Universe. Cosmic-Ray (CR) hadrons accelerated at structure formation shocks and injected by galaxies, are confined in galaxy clusters where they accumulate
Externí odkaz:
http://arxiv.org/abs/1508.05053
Publikováno v:
JCAP 09, 060 (2015)
We investigate for the first time the potential of angular auto- and cross-correlation power spectra in identifying sterile neutrino dark matter in the cosmic X-ray background. We take as reference the performance of the soon-to-be-launched eROSITA s
Externí odkaz:
http://arxiv.org/abs/1505.07829