FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1972256486> ?p ?o ?g. }

• W1972256486 endingPage "A32" @default.
• W1972256486 startingPage "A32" @default.
• W1972256486 abstract "Cosmic-ray protons accumulate for cosmological times in clusters of galaxies as their typical radiative and diffusive escape times are longer than the Hubble time. Their hadronic interactions with protons of the intra-cluster medium generate secondary electrons, gamma-rays and neutrinos. We here estimate the contribution from clusters to the diffuse gamma-ray and neutrino backgrounds. We model the cluster population by means of their mass function, using a phenomenological luminosity-mass relation applied to all clusters, as well as a detailed semi-analytical model. Additionally, we consider observationally-motivated values for the cluster magnetic field. This is a crucial parameter since the observed radio counts due to synchrotron emission by secondary electrons need to be respected. For a choice of parameters respecting all current constraints, and assuming a spectral index of -2, we find that hadronic interactions in clusters contribute by less than 10% to the extragalactic gamma-ray background observed by Fermi and to the IceCube flux. They account for less than 1% for spectral indices <=-2. The neutrino flux observed by IceCube can be reproduced without violating constraints only if a very hard (and speculative) spectral index >-2 is adopted. However, this scenario is in tension with the IceCube data, which seem to suggest a spectral energy distribution of the neutrino flux that decreases with energy. In the case of proton-photon interactions, we find that very likely protons do not reach sufficiently high energies to produce neutrinos in clusters. We argue that our results are optimistic due to our assumptions, and that clusters of galaxies cannot give any relevant contribution to the extragalactic gamma-ray and neutrino backgrounds. Finally, we find that the cluster contribution to the angular fluctuations in the gamma-ray background is subdominant, less than 10%. [abridged]" @default.
• W1972256486 created "2016-06-24" @default.
• W1972256486 creator A5015187914 @default.
• W1972256486 creator A5019790281 @default.
• W1972256486 creator A5044567744 @default.
• W1972256486 creator A5050111334 @default.
• W1972256486 date "2015-05-29" @default.
• W1972256486 modified "2023-10-10" @default.
• W1972256486 title "High-energy gamma-ray and neutrino backgrounds from clusters of galaxies and radio constraints" @default.
• W1972256486 cites W1527309878 @default.
• W1972256486 cites W1685552061 @default.
• W1972256486 cites W1783065100 @default.
• W1972256486 cites W1833408884 @default.
• W1972256486 cites W1963610164 @default.
• W1972256486 cites W1965213954 @default.
• W1972256486 cites W1965725416 @default.
• W1972256486 cites W1967106587 @default.
• W1972256486 cites W1967119406 @default.
• W1972256486 cites W1967333772 @default.
• W1972256486 cites W1968990802 @default.
• W1972256486 cites W1969926061 @default.
• W1972256486 cites W1970840956 @default.
• W1972256486 cites W1971214100 @default.
• W1972256486 cites W1975278286 @default.
• W1972256486 cites W1978962210 @default.
• W1972256486 cites W1980042166 @default.
• W1972256486 cites W1981037855 @default.
• W1972256486 cites W1982122525 @default.
• W1972256486 cites W1983311643 @default.
• W1972256486 cites W1985068371 @default.
• W1972256486 cites W1988432967 @default.
• W1972256486 cites W1990523382 @default.
• W1972256486 cites W1990948132 @default.
• W1972256486 cites W1992432040 @default.
• W1972256486 cites W1998174391 @default.
• W1972256486 cites W2001201254 @default.
• W1972256486 cites W2002438643 @default.
• W1972256486 cites W2006063102 @default.
• W1972256486 cites W2006876891 @default.
• W1972256486 cites W2007023352 @default.
• W1972256486 cites W2007322131 @default.
• W1972256486 cites W2007403924 @default.
• W1972256486 cites W2009112801 @default.
• W1972256486 cites W2014748751 @default.
• W1972256486 cites W2015904699 @default.
• W1972256486 cites W2021015417 @default.
• W1972256486 cites W2021598093 @default.
• W1972256486 cites W2029010726 @default.
• W1972256486 cites W2036486311 @default.
• W1972256486 cites W2042199174 @default.
• W1972256486 cites W2042939888 @default.
• W1972256486 cites W2044460462 @default.
• W1972256486 cites W2047170523 @default.
• W1972256486 cites W2054152824 @default.
• W1972256486 cites W2056236838 @default.
• W1972256486 cites W2056832236 @default.
• W1972256486 cites W2057321562 @default.
• W1972256486 cites W2058192339 @default.
• W1972256486 cites W2058798168 @default.
• W1972256486 cites W2070145034 @default.
• W1972256486 cites W2073569834 @default.
• W1972256486 cites W2083067775 @default.
• W1972256486 cites W2087425203 @default.
• W1972256486 cites W2087752588 @default.
• W1972256486 cites W2090196137 @default.
• W1972256486 cites W2093015452 @default.
• W1972256486 cites W2096421622 @default.
• W1972256486 cites W2098340246 @default.
• W1972256486 cites W2098656848 @default.
• W1972256486 cites W2099275498 @default.
• W1972256486 cites W2099567795 @default.
• W1972256486 cites W2101628771 @default.
• W1972256486 cites W2102220052 @default.
• W1972256486 cites W2106028688 @default.
• W1972256486 cites W2112753154 @default.
• W1972256486 cites W2113112035 @default.
• W1972256486 cites W2113490399 @default.
• W1972256486 cites W2115632498 @default.
• W1972256486 cites W2116125801 @default.
• W1972256486 cites W2116536024 @default.
• W1972256486 cites W2117781572 @default.
• W1972256486 cites W2119156667 @default.
• W1972256486 cites W2120274945 @default.
• W1972256486 cites W2123046843 @default.
• W1972256486 cites W2123670385 @default.
• W1972256486 cites W2124089317 @default.
• W1972256486 cites W2126588894 @default.
• W1972256486 cites W2130314416 @default.
• W1972256486 cites W2133436825 @default.
• W1972256486 cites W2133759610 @default.
• W1972256486 cites W2139212326 @default.
• W1972256486 cites W2140734505 @default.
• W1972256486 cites W2145269049 @default.
• W1972256486 cites W2147875900 @default.
• W1972256486 cites W2152075541 @default.
• W1972256486 cites W2152606168 @default.
• W1972256486 cites W2154811628 @default.
• W1972256486 cites W2155064867 @default.

• next