Zobrazeno 1 - 10
of 127
pro vyhledávání: '"Colafrancesco Sergio"'
Publikováno v:
Astrophys Space Sci 365:188(2020)
This work presents an analytical approach for studying the cosmological 21cm background signal from the Dark Ages (DA) and subsequent Epoch of Reionization (EoR). We simulate differential observations of a galaxy cluster to demonstrate how these epoc
Externí odkaz:
http://arxiv.org/abs/2012.06534
Mixing between photons and low-mass bosons is well considered in the literature. The particular case of interest here is with hypothetical gravitons, as we are concerned with the direct conversion of gravitons into photons in the presence of an exter
Externí odkaz:
http://arxiv.org/abs/1904.12678
Publikováno v:
PoS(HEASA2018)006
The SZE-21cm has been proposed as an alternative probe for the Dark Ages (DA) and the Epoch of Reionization (EoR). The effect is produced when photons of the 21cm background are inverse Compton (up-)scattered by electrons residing in hot plasma of co
Externí odkaz:
http://arxiv.org/abs/1903.12631
The events observed by LIGO indicate the existence of a large population of intermediate mass black holes. This unexpected result lead to a resurgence in the interest in theories of the formation of primordial black holes with several studies showing
Externí odkaz:
http://arxiv.org/abs/1902.11246
Autor:
Beck, Geoff, Colafrancesco, Sergio
The DArk Matter Particle Explorer (DAMPE) mission revealed a break in the spectrum of cosmic-ray electons and positrons. This is associated with an excess above the expected backgrounds at energies around 1 TeV. Several authors have argued that such
Externí odkaz:
http://arxiv.org/abs/1902.07468
Planck stars form when a collapsing shell of matter within a black hole reaches the Planck density, roughly equivalent to the mass being compressed into a volumetric size near that of the proton, and rebounds outwards. These planck stars have been co
Externí odkaz:
http://arxiv.org/abs/1902.02550
Autor:
Beck, Geoff, Colafrancesco, Sergio
The Madala hypothesis was formulated to explain anomalies in LHC data from run-1. Subsequently, these anomalies have endured into run-2 and been strengthened. This makes the analysis of the proposal highly pertinent, and, since some of the properties
Externí odkaz:
http://arxiv.org/abs/1812.00691
Publikováno v:
PoS(HEASA2017)008
In pursuit of understanding the early Universe and early processes occurring particularly in the Dark Ages (DA) and the Epoch of Reionization (EoR), it is vital that a suitable probe is identified. Probing these epochs will be useful in studies of th
Externí odkaz:
http://arxiv.org/abs/1810.10115
Autor:
Beck, Geoff, Colafrancesco, Sergio
The DArk Matter Particle Explorer (DAMPE) recently reported an excess of electrons/positrons above expected background fluxes even when a double power-law background spectrum is assumed. Several dark matter models that involve TeV-scale leptophilic W
Externí odkaz:
http://arxiv.org/abs/1810.07176
Electromagnetic radiation is known to be associated with certain gravitational waves events, i.e. the collision of binary neutron stars. Establishing this connection is non-trivial. However, if electromagnetic counterparts could be produced by direct
Externí odkaz:
http://arxiv.org/abs/1805.03951