TY - JOUR
T1 - Radiative decay lifetime of neutrinos and the evolution of the universe after the recombination era
AU - Rephaeli, Yoel
AU - Szalay, Alexander S.
N1 - Funding Information:
We gratefully acknowledge conversations with Martin Rees, Joe Silk and Mike Wilson. Alexander Szalay is thankful for the hospitality of the ITP and its Director, Professor Walter Kohn. Research has been supported by NSF Grant PHY77-27084 and DOE Grant AC02-80ER10773.
PY - 1981/10/29
Y1 - 1981/10/29
N2 - If the radiative decay lifetime τ of massive neutrinos is less than 1025 s, but exceeding present constraints, the epoch of neutral hydrogen in the history of the universe could have been short or altogether absent. Erasure of small scale fluctuations in the cosmic microwave background radiation and other consequences of such lifetimes are discussed. From observations of neutral hydrogen in the nearby galaxy M 31 a lower limit τ ≥ 1024 s is obtained (for neutrino masses in the range 30 eV ≤ m ≤ 150 eV).
AB - If the radiative decay lifetime τ of massive neutrinos is less than 1025 s, but exceeding present constraints, the epoch of neutral hydrogen in the history of the universe could have been short or altogether absent. Erasure of small scale fluctuations in the cosmic microwave background radiation and other consequences of such lifetimes are discussed. From observations of neutral hydrogen in the nearby galaxy M 31 a lower limit τ ≥ 1024 s is obtained (for neutrino masses in the range 30 eV ≤ m ≤ 150 eV).
UR - http://www.scopus.com/inward/record.url?scp=0010791622&partnerID=8YFLogxK
U2 - 10.1016/0370-2693(81)91083-2
DO - 10.1016/0370-2693(81)91083-2
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AN - SCOPUS:0010791622
SN - 0370-2693
VL - 106
SP - 73
EP - 76
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-2
ER -