2.5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Ilia State UniversityGE219 papers
- Instituto de Astrofísica de AndalucíaES90 papers
- Center for Astrophysics Harvard & SmithsonianUS82 papers
- Osservatorio Astrofisico di TorinoIT81 papers
- National Institute for AstrophysicsIT77 papers
- Boston UniversityUS72 papers
- Pulkovo ObservatoryRU71 papers
- Instituto de Astrofísica de CanariasES70 papers
- Space Research InstituteRU70 papers
- Centre National de la Recherche ScientifiqueFR69 papers
- Kansas State UniversityUS69 papers
- St Petersburg UniversityRU69 papers
21 papers · 1 filter
Multi-band Optical Variability of the TeV Blazar PG 1553+113 in 2019
Vinit Dhiman, Alok C. Gupta, Sofia O. Kurtanidze +20
We report the flux and spectral variability of PG 1553+113 on intra-night (IDV) to short-term timescales using BVRI data collected over 91 nights from 28 February to 8 November 201…
Interplay between geostrophic vortices and inertial waves in precession-driven turbulence
F. Pizzi, G. Mamatsashvili, A. J. Barker +2
The properties of rotating turbulence driven by precession are studied using direct numerical simulations and analysis of the underlying dynamical processes in Fourier space. The s…
Inflationary and phase-transitional primordial magnetic fields in galaxy clusters
Salome Mtchedlidze, Paola Domínguez-Fernández, Xiaolong Du +4
Primordial magnetic fields (PMFs) are possible candidates for explaining the observed magnetic fields in galaxy clusters. Two competing scenarios of primordial magnetogenesis have…
Multi-messenger characterization of Mrk 501 during historically low X-ray and -ray activity
MAGIC collaboration, H. Abe, S. Abe +322
We study the broadband emission of Mrk 501 using multi-wavelength observations from 2017 to 2020 performed with a multitude of instruments, involving, among others, MAGIC, Fermi-LA…
Dark off-limb gap: manifestation of temperature minimum and dynamic nature of the chromosphere
D. Kuridze, P. Heinzel, J. Koza +1
We study off-limb emission of the lower solar atmosphere using high-resolution imaging spectroscopy in the H and Ca II 8542 Å lines obtained with the CHROMospheric Imaging Spect…
Pulsar radio emission mechanism II. On the origin of relativistic Langmuir solitons in pulsar plasma
Sk. Minhajur Rahaman, Dipanjan Mitra, George I. Melikidze +1
Observations suggest that coherent radio emission from pulsars is excited in a dense pulsar plasma by curvature radiation from charge bunches. Numerous studies propose that these c…
On the fraction of particles involved in magneto-centrifugally generated ultra-high energy electrons in the Crab pulsar
Z. N. Osmanov, S. M. Mahajan
The earthward journey of ultra high energy electrons ( TeV) produced in the Pulsar atmosphere by Landau damping of magneto-centrifugally excited Langmuir waves (drawing e…
Tidally Forced Planetary Waves in the Tachocline of Solar-like Stars
G. M. Horstmann, G. Mamatsashvili, A. Giesecke +2
Can atmospheric waves in planet-hosting solar-like stars substantially resonate to tidal forcing? Substantially at a level of impacting the space weather or even of being dynamo-re…
Two Dimensional Configuration and Temporal Evolution of Sparking discharges in Pulsars
Rahul Basu, George I. Melikidze, Dipanjan Mitra
We have investigated the evolution of a system of sparking discharges in the inner acceleration region (IAR) above the pulsar polar cap. The surface of the polar cap is heated to t…
Numerical simulations of a two-fluid jet at a magnetic null point in a solar arcade
J. J. González-Avilés, K. Murawski, T. V. Zaqarashvili
We study the formation and evolution of jets in the solar atmosphere using numerical simulations of partially ionized plasma. The two-fluid magnetohydrodynamic equations with ion+e…
Beyond dark energy Fisher forecasts: how DESI will constrain LCDM and quintessence models
Samuel Goldstein, Minsu Park, Marco Raveri +2
We baseline with current cosmological observations to forecast the power of the Dark Energy Spectroscopic Instrument (DESI) in two ways: 1. the gain in constraining power of parame…
Discovery of an optical cocoon tail behind the runaway HD 185806
Z. T. Spetsieri, P. Boumis, A. Chiotellis +6
Studies on the circumstellar structures around evolved stars provide vital information on the evolution of the parent star and the properties of the local interstellar medium. In t…
Resonant energization of particles by radio AGN
S. M. Mahajan, Z. N. Osmanov
A new mechanism of particle acceleration, based on the resonant interaction of a classical electromagnetic wave (EM) with a quantum wave (associated with a relativistic particle),…
MRI turbulence in accretion discs at large magnetic Prandtl numbers
Loren E. Held, George Mamatsashvili
The effect of large magnetic Prandtl number (the ratio of viscosity to resistivity) on the turbulent transport and energetics of the magnetorotational instability (MRI)…
Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument
B. Abareshi, J. Aguilar, S. Ahlen +264
The Dark Energy Spectroscopic Instrument (DESI) has embarked on an ambitious five-year survey to explore the nature of dark energy with spectroscopy of 40 million galaxies and quas…
And then they were two: detection of non-thermal radio emission from the bow shocks of two runaway stars
M. Moutzouri, J. Mackey, C. Carrasco González +7
Winds from massive stars have recently been deemed promising sites for investigating relativistic particle acceleration. Particularly, the resulting bow shock from the interaction…
Categorization model of moving small-scale intensity enhancements in solar active regions
B. M. Shergelashvili, E. Philishvili, S. Buitendag +2
The small-scale moving intensity enhancements remotely observed in the extreme ultraviolet images of the solar active regions, which we refer to as active region moving campfires (…
Externally-driven plasma models as candidates for pulsar radio emission
Sk. Minhajur Rahaman, Dipanjan Mitra, George I. Melikidze
Coherent radio emission from pulsars originates from excited plasma waves in an ultra-relativistic and strongly magnetized electron-positron pair plasma streaming along the open ma…
GRANDMA Observations of ZTF/Fink Transients during Summer 2021
V. Aivazyan, M. Almualla, S. Antier +80
We present our follow-up observations with GRANDMA of transient sources revealed by the Zwicky Transient Facility (ZTF). Over a period of six months, all ZTF triggers were examined…
The Atmospheric Response to High Nonthermal Electron Beam Fluxes in Solar Flares. II. Hydrogen Broadening Predictions for Solar Flare Observations with the Daniel K. Inouye Solar Telescope
Adam F. Kowalski, Joel C. Allred, Mats Carlsson +5
Red-shifted components of chromospheric emission lines in the hard X-ray impulsive phase of solar flares have recently been studied through their 30 s evolution with the high resol…
Spectral variation across Pulsar Profile due to Coherent Curvature Radiation
Rahul Basu, Dipanjan Mitra, George I. Melikidze
The pulsar profile is characterised by two distinct emission components, the core and the cone. The standard model of a pulsar radio emission beam originating from dipolar magnetic…