Results 1 to 10 of about 56,626 (163)

Scaling laws of quiet-Sun coronal loops [PDF]

open access: yes, 2019
We study a series of relations between physical parameters in coronal loops of the quiet Sun reconstructed by combining tomographic techniques and modeling of the coronal magnetic field. We use differential emission measure tomography (DEMT) to determine
Lloveras, Diego Gustavo   +5 more
core   +1 more source

Shadow cast by rotating braneworld black holes with a cosmological constant [PDF]

open access: yes, 2018
In this article, we study the shadow produced by rotating black holes with a tidal charge in a Randall-Sundrum braneworld model, with a  cosmological constant.
Eiroa, Ernesto Fabian   +1 more
core   +2 more sources

Evolving supernova remnants in multiphase interstellar media [PDF]

open access: yes, 2019
We performed three-dimensional magnetohydrodynamic simulations to study the evolution of a supernova remnant (SNR) in a turbulent neutral atomic interstellar medium. The media used as background shares characteristics with the Solar neighbourhood and the
Giacani, Elsa Beatriz   +3 more
core   +2 more sources

Thin shells surrounding black holes in F(R) gravity [PDF]

open access: yes, 2019
In this article, we consider spherical thin shells of matter surrounding black holes in F(R) theories of gravity. We study the stability of the static configurations under perturbations that conserve the symmetry.
Eiroa, Ernesto Fabian   +1 more
core   +2 more sources

Two successive partial mini-filament confined ejections [PDF]

open access: yes, 2019
Active region (AR) NOAA 11476 produced a series of confined plasma ejections, mostly accompanied by flares of X-ray class M, from 08 to 10 May 2012. The structure and evolution of the confined ejections resemble that of EUV surges; however, their origin ...
Bustos, C.   +4 more
core   +2 more sources

Ross 128-GL 447: A possible activity cycle for a slow-rotating fully convective star [PDF]

open access: yes, 2019
Context. Long-term chromospheric activity in slow-rotating fully convective stars has scarcely been explored. Ross 128 (Gl 447) is a slow-rotator and inactive dM4 star that has been extensively observed.
Buccino, Andrea Paola   +3 more
core   +1 more source

Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 Å [PDF]

open access: yes, 2001
We present a complete atomic model for Si I line synthesis. We study how the computed profiles of two blue lines of this atom are influenced by the choice of the atomic parameters and find that, although several cross sections are not known accurately ...
Cincunegui, Carolina Cecilia   +1 more
core   +1 more source

Enhanced transport through desorption-mediated diffusion [PDF]

open access: yes, 2013
We present a master equation approach to the study of the bulk-mediated surface diffusion mechanism in a three-dimensional confined domain. The proposed scheme allowed us to evaluate analytically a number of magnitudes that were used to characterize the ...
Budde, Carlos Ernesto   +3 more
core   +1 more source

On the relation between Seyfert 2 accretion rate and environment at z < 0.1 [PDF]

open access: yes, 2014
We analyse different properties of the small-scale environment of Seyfert 2 for two samples selected according to the accretion rate parameter, R, from the Sloan Digital Sky Survey, Data Release 7 survey.
Coldwell Lloveras, Georgina Vanesa   +4 more
core   +1 more source

Holographic interference in atomic photoionization from a semiclassical standpoint [PDF]

open access: yes, 2019
A theoretical study of the interference pattern imprinted on the doubly differential momentum distribution of the photoelectron due to atomic ionization induced by a short laser pulse is developed from a semiclassical standpoint. We use the semiclassical
Arbo, Diego, López, Sebastián David
core   +2 more sources

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