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Interplay between neutrino kicks and hydrodynamic kicks of neutron stars and black holes
Neutron stars (NSs) are observed with high space velocities and elliptical orbits in binaries. The magnitude of these effects points to natal kicks...
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A comparative study of solar activity parameters during the period 2009–2012 and 2020–2023 (ascending phase of solar cycles 24 and 25)
In this paper, we performed solar synodic period (∼27 days) and heliospheric effect for selected solar activity parameters: sunspot number (SSN),...
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Titanium oxide absorption as a proxy to detect long term variation and activity cycle in Proxima Centauri
Stellar activity cycles on magnetically active stars can be estimated by molecular absorption bands. We have previously introduced a molecular index...
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International ISON project & databases on space debris and asteroids
The exploration and investigation of near-Earth outer space (NES) have highlighted attention to potential threats, namely the dangers posed by...
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Finch-Skea dark energy star with anisotropy
We present a relativistic model of anisotropic compact objects with spherically symmetric matter distribution coupled with dark energy in the...
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Jupiter mass binaries and cosmic ray viscosity
The fraction of planetary mass objects in the Trapezium cluster that are in wide binaries is much greater than implied by extrapolation to lower...
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Constraining the emergent dark energy models with observational data at intermediate redshift
In this work, we investigate the phenomenologically emergent dark energy (PEDE) model and its generalized form, namely the generalized emergent dark...
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Cosmological parameters, accelerated expansion of the universe and metric \(\mathit{{f(R)}}\) gravity
In this work, we aim to study the consequences of presently observed accelerated expansion of the universe by assuming power-law based Starobinsky...
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Lower twin peak quasiperiodic oscillation coherence across luminosity and the tidal stretching time-scale
In this manuscript we pursue tidal disruption of magnetically confined clumps of matter as candidate to interpret the twin peak high-frequency...
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Tracing shock waves: type II radio emission on 27th of September 2001
This study focus on atypical Type II radio bursts observed in conjunction with three simultaneous coronal mass ejections (CMEs) on September 27,...
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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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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...
