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Suppression of small baryonic structures due to a primordial magnetic field
(WILEY-BLACKWELL, 2010)
We investigate the impact of the existence of a primordial magnetic field on the filter mass, characterizing the minimum baryonic mass that can form in dark matter (DM) haloes. For masses below the filter mass, the baryon ...
Faraday Rotation Measure Dependence on Galaxy Clusters Dynamics
(Wiley Blackwell Publishing, Inc, 2019-08)
We study the magnetic fields in galaxy clusters through Faraday rotation measurements crossing systems in different dynamical states. We confirm that magnetic fields are present in those systems and analyse the difference ...
Random primordial magnetic fields and the gas content of dark matter haloes
(WILEY-BLACKWELL PUBLISHING, INC, 2011)
We recently predicted the existence of random primordial magnetic fields (RPMFs) in the form of randomly oriented cells with dipole-like structure with a cell size L(0) and an average magnetic field B(0). Here, we investigate ...
Origin of magnetic fields in galaxies
(AMER PHYSICAL SOC, 2010)
Microgauss magnetic fields are observed in all galaxies at low and high redshifts. The origin of these intense magnetic fields is a challenging question in astrophysics. We show here that the natural plasma fluctuations ...
A new optical polarization catalog for the small magellanic cloud: the magnetic field structure
(IOP Publishing, 2015-06-10)
We present a new optical polarimetric catalog for the Small Magellanic Cloud (SMC). It contains a total of 7207 stars, located in the northeast (NE) and Wing sections of the SMC and part of the Magellanic Bridge. This new ...
On the influence of non-thermal pressure on the mass determination of galaxy clusters
(EDP SCIENCES S A, 2010)
Aims. Given that in most cases just thermal pressure is taken into account in the hydrostatic equilibrium equation to estimate galaxy cluster mass, the main purpose of this paper is to consider the contribution of all three ...
Origin of primordial magnetic fields
(AMER PHYSICAL SOC, 2008)
Magnetic fields of intensities similar to those in our galaxy are also observed in high redshift galaxies, where a mean field dynamo would not have had time to produce them. Therefore, a primordial origin is indicated. It ...
The role of magnetic reconnection on jet/accretion disk systems
(EDP SCIENCES S A, 2010)
Context. It was proposed earlier that the relativistic ejections observed in microquasars could be produced by violent magnetic reconnection episodes at the inner disk coronal region (de Gouveia Dal Pino & Lazarian 2005). ...
Ultra-high-energy cosmic rays from centaurus A: jet interaction with gaseous shells
(IOP PUBLISHING LTD, 2010)
Ultra-high-energy cosmic rays (UHECRs), with energies above similar to 6 x 10(19) eV, seem to show a weak correlation with the distribution of matter relatively near to us in the universe. It has earlier been proposed that ...