LUO Xin-Lian1, PENG Qiu-He1,2,3, ZHANG Ling-Di1,4, BAI Hua1, CHOU Chih-Kang4,5
1Department of Astronomy, Nanjing University, Nanjing 210093
2Joint Astrophysics Centre of Chinese Academy of Sciences-Peking University, Beijing 100871
3Open Laboratory for Cosmic Ray and High Energy Astrophysics, Chinese Academy of Sciences, Beijing 100039
4National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
5Institute of Astronomy and Department of Physics, National Central University, Chung-Li, Taipei 32054
Cosmic Neutrino Time Delay Relative to Photons
LUO Xin-Lian1;PENG Qiu-He1,2,3;ZHANG Ling-Di1,4;BAI Hua1;CHOU Chih-Kang4,5
1Department of Astronomy, Nanjing University, Nanjing 210093
2Joint Astrophysics Centre of Chinese Academy of Sciences-Peking University, Beijing 100871
3Open Laboratory for Cosmic Ray and High Energy Astrophysics, Chinese Academy of Sciences, Beijing 100039
4National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
5Institute of Astronomy and Department of Physics, National Central University, Chung-Li, Taipei 32054
Abstract： By solving the Friedmann-Robertson-Walker (FRW) geodesic equations for a free test particle with finite mass, we extend the widely used time-of-flight delay expression, which is just valid locally in the neighbourhood of our Galaxy, to the cosmic distance scale. If neutrino masses are known, this may provide a potential method to determine a large scale geometry of the Universe.
2004, Vol. 21 
