Open AccessLarge‐scale magnetic fields: galaxy two‐point correlation function
Author(s) -
Sethi Shiv K.
Publication year - 2003
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2003.06610.x
Subject(s) - physics , magnetic field , correlation function (quantum field theory) , astrophysics , galaxy , cosmic microwave background , redshift , anisotropy , optics , quantum mechanics , dielectric
We study the effect of large‐scale tangled magnetic fields on the galaxy two‐point correlation function in the redshift space. We show that (i) the magnetic field effects can be comparable to the gravity‐induced clustering for present magnetic field strength B 0 ≃ 5 × 10 −8 G , (ii) the absence of this signal from the present data gives an upper bound B 0 ≲ 3 × 10 −8 G and (iii) the future data can probe the magnetic fields of ≃10 −8 G . A comparison with other constraints on the present magnetic field shows that they are marginally compatible. However, if the magnetic fields corresponding to B 0 ≃ 10 −8 G existed at the last scattering surface, they will cause unacceptably large cosmic microwave background radiation anisotropies.