摘要： Photons can gravitationally scatter off a cosmic string loop and gain or lose energy. We consider the spectral distortion induced by cosmic string loops placed in an ambient thermal bath of photons. The fractional deviation from a thermal spectrum caused by cosmic strings is estimated to scale as (G sub(N) mu ) super(2)z super(2), where G sub(N) is Newton's constant, mu is the string tension, and z is the cosmological redshift after which spectral distortions can survive. This effect is large enough to potentially be of observational interest. 出版者： United States: American Physical Society 出版日期： 2013-04-10 出處： Physical review. D, Particles, fields, gravitation, and cosmology, 2013-04, Vol.87 (8), Article 083512 識別號： ISSN: 1550-7998 識別號： EISSN: 1550-2368 識別號： DOI: 10.1103/PhysRevD.87.083512
