TY - JOUR
T1 - Gravitational scattering of photons off cosmic strings
AU - Chu, Yi Zen
AU - Vachaspati, Tanmay
PY - 2013/4/10
Y1 - 2013/4/10
N2 - 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 Nμ)2z2, where GN is Newton's constant, μ 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.
AB - 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 Nμ)2z2, where GN is Newton's constant, μ 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.
UR - http://www.scopus.com/inward/record.url?scp=84876181575&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.87.083512
DO - 10.1103/PhysRevD.87.083512
M3 - 期刊論文
AN - SCOPUS:84876181575
SN - 1550-7998
VL - 87
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 8
M1 - 083512
ER -