Far-ultraviolet background observations at high galactic latitude. I - The Coma Cluster

Autor:	Jay B. Holberg, H. B. Barber
Rok vydání:	1985
Předmět:	Physics Astronomy Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Galaxy Massless particle Galaxy groups and clusters Space and Planetary Science Coma Cluster High Energy Physics::Experiment Neutrino Galaxy cluster Lepton Background radiation
Zdroj:	The Astrophysical Journal. 292:16
ISSN:	1538-4357 0004-637X
DOI:	10.1086/163128
Popis:	A series of high-galactic-latitude observations made with the Voyager 2 ultraviolet spectrometer are used to place stringent upper limits on the far-ultraviolet emissions from the central regions of the Coma Cluster of galaxies. In particular, consideration of the 912-1150 A region yields lower limits upon the radiative decay lifetimes of any neutrino species with masses in the range 22.1-27.8 eV, assuming massless decay products. Limits on the radiative decay lifetimes of such neutrinos are found to vary from 2.4 x 10 to the 25th to 7.1 x 10 to the 24th s, respectively, as a function of neutrino rest mass. This represents a substantial improvement over previous measurements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::08afd059caf276866ad4100810220861 https://doi.org/10.1086/163128 Zobrazit plný text záznamu