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Parameters and the Eddington pulsation constant of Galactic RRab stars
For Galactic RRab stars 121 empirical and semiempirical metallicity–absolute magnitude relations known since 1990 are analyzed. For these variables,...
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Post-Newtonian theory for gravitational waves
To be observed and analyzed by the network of current gravitational-wave detectors (LIGO, Virgo, KAGRA), and in anticipation of future third...
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What is the hard spectral state in X-ray binaries? Insights from GRRMHD accretion flows simulations and polarization of their X-ray emission
X-ray binaries are known to exhibit different spectral states which are often associated with different black hole accretion modes. The exact...
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Orbital analysis in the gravitational potential of elongated asteroids
This work studies the motion around irregular elongated asteroids through two approaches. Firstly, it revisits the dipole-segment model, identifying...
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Dynamics and solar wind control of the recovery of strong geomagnetic storms
In this work we have studied about the characteristics and dynamical changes during the recovery time of moderate and strong geomagnetic storms of (
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Galaxy formation catalyzed by gravastars and the JWST, revisited
We have proposed that galaxy formation is catalyzed by the collision of infalling and outstreaming particles from leaky, horizonless astrophysical...
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On the linear structure of the interlaced Alfvén vortices in the tail of Uranus at solstice
Incompressible vortex flow are observed in a large variety of astrophysical plasmas such as the convection zone and the atmosphere of stars, in...
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The effects of solar radiation and geomagnetic disturbance during consecutive 27-day recurrent geomagnetic storms on variations of equatorial ionospheric parameters and spread F
This study investigates contributions of solar radiation and geomagnetic activity of consecutive 27-day recurrent geomagnetic storms (RGSs) to the...
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Self-absorption in solar surge as observed by IRIS
Solar surges are collimated flows of plasma that occur in the periphery of active regions (ARs). The kinematics, physical properties, and triggering...
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Characterizing global equatorial sporadic-E layers through COSMIC GNSS radio occultation measurements
The Global Navigation Satellite System Radio Occultation (GNSS-RO) technique has proven to be a powerful tool for studying E-region irregularities,...
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The discovery and significance of fast radio bursts
In 2007 we were part of a team that discovered the so-called “Lorimer Burst”, the first example of a new class of objects now known as fast radio...
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Wideband polarization and spectral properties of 18 high Galactic latitude pulsars
The broad-spectrum polarization and spectral characteristics of pulsars contain crucial information about the origin of their radio emission. These...
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Theoretical and experimental constraints for the equation of state of dense and hot matter
This review aims at providing an extensive discussion of modern constraints relevant for dense and hot strongly interacting matter. It includes...
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Deep learning-based prediction of CME-driven shock standoff distances in metric type II radio emissions
Type II radio emissions are events mostly found to be associated with coronal mass ejections (CMEs) and accelerated by the CME-driven shock in the...
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Analysis of solar energetic particle (SEP) event on the geomagnetic environment during 24th solar cycle
We report a study of major solar energetic particle (SEP) and ground level enhancement (GLE) events that occurred during the first 62 months of the...
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A model on transition between steady states of sub-Keplerian accretion discs: implication for spectral states and hot corona above the disc
We present here a simple hydrodynamic model based on a sequence of steady states of the inner sub-Keplerian accretion disc to understand its...
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Centering algorithm of an unresolved primary and satellite system
Affected by the Earth’s atmosphere, the image of a primary and satellite system may appear unresolved, such as the dwarf planet Haumea system. It is...
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Analytical methods in celestial mechanics: satellites’ stability and galactic billiards
In this paper, two models of interest for Celestial Mechanics are presented and analysed, using both analytic and numerical techniques, from the...
