Depolarization of the cosmic microwave background by a primordial magnetic field and its effect upon temperature anisotropy

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We estimate the depolarizing effect of a primordial magnetic field upon the cosmic microwave background radiation due to differential Faraday rotation across the last scattering surface. The degree of linear polarization of the CMB is significantly reduced at frequencies around and below 30 GHz (B*/...

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Autor principal: Harari, Diego Darío
Otros Autores: Hayward, J.D, Zaldarriaga, M.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 1997
Acceso en línea:Registro en Scopus
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Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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100 1 |a Harari, Diego Darío 
245 1 0 |a Depolarization of the cosmic microwave background by a primordial magnetic field and its effect upon temperature anisotropy 
260 |c 1997 
270 1 0 |m Harari, D.D.; D.A.R.C., Observatoire de Paris - Meudon, 5 Place Jules Janssen, 92195 Meudon, France; email: harari@df.uba.ar 
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506 |2 openaire  |e Política editorial 
520 3 |a We estimate the depolarizing effect of a primordial magnetic field upon the cosmic microwave background radiation due to differential Faraday rotation across the last scattering surface. The degree of linear polarization of the CMB is significantly reduced at frequencies around and below 30 GHz (B*/10-2 G)1/22, where B* is the value of the primordial field at recombination. The depolarizing mechanism reduces the damping of anisotropies due to photon diffusion on small angular scales. The l≈1000 multipoles of the CMB temperature anisotropy correlation function in a standard cold dark matter cosmology increase by up to 7.5% at frequencies where depolarization is significant.  |l eng 
593 |a D.A.R.C., Observatoire de Paris - Meudon, 5 Place Jules Janssen, 92195 Meudon, France 
593 |a Departamento de Fisica, Fac. de Ciencias Exactas y Naturales, Ciudad Universitaria - Pab. 1, 1428 Buenos Aires, Argentina 
593 |a Dept. Appl. Math. and Theor. Phys., University of Cambridge, Cambridge CB3 9EW, United Kingdom 
593 |a Department of Physics, MIT, Cambridge, MA 02139, United States 
700 1 |a Hayward, J.D. 
700 1 |a Zaldarriaga, M. 
773 0 |d 1997  |g v. 55  |h pp. 1841-1850  |k n. 4  |p Phys Rev D Part Fields Gravit Cosmol  |x 05562821  |w (AR-BaUEN)CENRE-394  |t Physical Review D - Particles, Fields, Gravitation and Cosmology 
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856 4 0 |u https://hdl.handle.net/20.500.12110/paper_05562821_v55_n4_p1841_Harari  |y Handle 
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