Artigo
Astrophysical constraints on a light spinless particle coupled to photons
Fecha
1996-12-01Registro en:
Modern Physics Letters A, v. 11, n. 9, p. 715-722, 1996.
0217-7323
10.1142/S0217732396000710
WOS:A1996UL33800002
2-s2.0-0000443430
Autor
Universidade Estadual Paulista (Unesp)
Resumen
We examine further astrophysical constraints on a light spinless particle coupled only to photons and proposed by Massó and Toldra. We consider constraints coming from measurements of extra galactic background and from ionization of HI clouds.