output
19972026
most citedThe Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III

2.5k citations

Showing 2020 · astro-ph.HEShow all

12 papers · 2 filters

astro-ph.HE2020★ 52 cited

The dual nature of blazar fast variability. Space and ground observations of S5 0716+714

C. M. Raiteri, M. Villata, D. Carosati +39

Blazar S5 0716+714 is well-known for its short-term variability, down to intra-day time-scales. We here present the 2-min cadence optical light curve obtained by the TESS space tel…

astro-ph.HE2020★ 31 cited

Mode changing, subpulse drifting and nulling in four component conal pulsar PSR J2321+6024

Sk. Minhajur Rahaman, Rahul Basu, Dipanjan Mitra +1

In this study, we report on a detailed single pulse polarimetric analysis of the radio emission from the pulsar J2321+6024 (B2319+60) observed with the Giant Metrewave Radio Telesc…

astro-ph.HE2020★ 2 cited

Search for Off-pulse emission in Long Period Pulsars

Rahul Basu, Dipanjan Mitra, George I. Melikidze

We have revisited the problem of off-pulse emission in pulsars, where detailed search for the presence of low level radio emission outside the pulse window is carried out. The pres…

astro-ph.HE2020★ 20 cited

Zero net flux MRI-turbulence in disks sustenance scheme and magnetic Prandtl number dependence

George Mamatsashvili, George Chagelishvili, Martin E. Pessah +2

We investigate sustenance and dependence on magnetic Prandtl number () for magnetorotational instability (MRI)-driven turbulence in astrophysical Keplerian disks with zer…

astro-ph.HE2020★ 9 cited

Grandma: a network to coordinate them all

S. Agayeva, S. Alishov, S. Antier +75

GRANDMA is an international project that coordinates telescope observations of transient sources with large localization uncertainties. Such sources include gravitational wave even…

astro-ph.HE2020★ 1 cited

Pulsar radio emission mechanism I : On the amplification of Langmuir waves in the linear regime

Sk. Minhajur Rahaman, Dipanjan Mitra, George I. Melikidze

Observations suggest that in normal period radio pulsars, coherent curvature radiation is excited within 10 of the light cylinder. The coherence is attributed to Langmuir mode…

astro-ph.HE2020★ 33 cited

A Mechanism of Spark Motion in Inner Acceleration Region to Investigate Subpulse Drifting in Pulsars

Rahul Basu, Dipanjan Mitra, George I. Melikidze

Coherent radio emission in pulsars is excited due to instabilities in a relativistically streaming non-stationary plasma flow, which is generated from sparking discharges in the in…

astro-ph.HE2020★ 98 cited

GRANDMA Observations of Advanced LIGO's and Advanced Virgo's Third Observational Campaign

S. Antier, S. Agayeva, M. Almualla +55

GRANDMA is a network of 25 telescopes of different sizes, including both photometric and spectroscopic facilities. The network aims to coordinate follow-up observations of gravitat…

astro-ph.HE2020★ 46 cited

The Great Markarian 421 Flare of February 2010: Multiwavelength variability and correlation studies

A. U. Abeysekara, W. Benbow, R. Bird +256

We report on variability and correlation studies using multiwavelength observations of the blazar Mrk 421 during the month of February, 2010 when an extraordinary flare reaching a…

astro-ph.HE2020★ 50 cited

Unravelling the complex behavior of Mrk 421 with simultaneous X-ray and VHE observations during an extreme flaring activity in April 2013

MAGIC collaboration, V. A. Acciari, S. Ansoldi +237

We report on a multi-band variability and correlation study of the TeV blazar Mrk 421 during an exceptional flaring activity observed from 2013 April 11 to 2013 April 19. The study…

astro-ph.HE2020★ 51 cited

Multiwavelength behaviour of the blazar 3C279: decade-long study from -ray to radio

V. M. Larionov, S. G. Jorstad, A. P. Marscher +84

We report the results of decade-long (2008-2018) -ray to 1 GHz radio monitoring of the blazar 3C 279, including GASP/WEBT, and data, as well as polarim…

astro-ph.HE2020★ 16 cited

Optical Variability of the TeV Blazar 1ES 0806+524 on Diverse Timescales

Ashwani Pandey, Alok C. Gupta, Sofia O. Kurtanidze +14

We report the results of our optical (VRI) photometric observations of the TeV blazar 1ES 0806524 on 153 nights during 2011-2019 using seven optical telescopes in Europe and Asi…