scholarly journals A novel constraint on the Primordial Magnetic Fields using 21-cm line absorption signal

2019 ◽  
Author(s):  
Teppei Minoda ◽  
Hiroyuki Tashiro ◽  
Tomo Takahashi
Keyword(s):  
Magnetic Fields ◽  
Absorption Signal ◽  
Line Absorption ◽  
Primordial Magnetic Fields

scholarly journals Insight into primordial magnetic fields from 21-cm line observation with EDGES experiment

2019 ◽  
Vol 488 (2) ◽  
pp. 2001-2005 ◽  
Author(s):  
Teppei Minoda ◽  
Hiroyuki Tashiro ◽  
Tomo Takahashi
Keyword(s):  
Magnetic Fields ◽  
Thermal Evolution ◽  
Recent Observation ◽  
Microwave Background ◽  
Strong Constraint ◽  
Absorption Signal ◽  
Stringent Limit ◽  
Primordial Magnetic Fields ◽  
Insight Into ◽  
Line Observation

Abstract The recent observation of the 21-cm global absorption signal by EDGES suggests that the intergalactic medium (IGM) gas has been cooler than the cosmic microwave background during 15 ≲ z ≲ 20. This result can provide a strong constraint on heating sources for the IGM gas at these redshifts. In this paper we study the constraint on the primordial magnetic fields (PMFs) by the EDGES result. The PMFs can heat the IGM gas through their energy dissipation due to the magnetohydrodynamic effects. By numerically solving the thermal evolution of the IGM gas with the PMFs, we find that the EDGES result gives a stringent limit on the PMFs as B1 Mpc ≲ 10−10 G.

scholarly journals Origin of primordial magnetic fields

2008 ◽  
Vol 77 (4) ◽  
Author(s):  
Rafael S. de Souza ◽  
Reuven Opher
Keyword(s):  
Magnetic Fields ◽  
Primordial Magnetic Fields

scholarly journals Inflation from charged scalar and primordial magnetic fields?

2010 ◽  
Vol 81 (8) ◽  
Author(s):  
Razieh Emami ◽  
Hassan Firouzjahi ◽  
M. Sadegh Movahed
Keyword(s):  
Magnetic Fields ◽  
Charged Scalar ◽  
Primordial Magnetic Fields

scholarly journals Primordial magnetic fields from dark energy

2002 ◽  
Vol 542 (1-2) ◽  
pp. 1-7 ◽  
Author(s):  
Da-Shin Lee ◽  
Wolung Lee ◽  
Kin-Wang Ng
Keyword(s):  
Dark Energy ◽  
Magnetic Fields ◽  
Primordial Magnetic Fields
Sign in / Sign up

Export Citation Format

Share Document