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

2.5k citations

Showing 2019Show all

19 papers · 1 filter

astro-ph.HE2019★ 31 cited

A Single spark model for PSR J21443933

Dipanjan Mitra, Rahul Basu, George I. Melikidze +1

The partially screened vacuum gap model (PSG) for the inner acceleration region in normal radio pulsars, a variant of the pure vacuum gap model, attempts to account for the observe…

astro-ph.HE2019★ 55 cited

Periodic Modulation : Newly emergent emission behaviour in Pulsars

Rahul Basu, Dipanjan Mitra, Giorgi I. Melikidze

Periodic modulations are seen in normal period pulsars ( 0.1 sec) over timescales ranging from a few seconds to several minutes. Such modulations have usually been associated…

astro-ph.EP2019★ 2 cited

A satellite orbit drift in binary near-Earth asteroids (66391) 1999 KW4 and (88710) 2001 SL9 -- Indication of the BYORP effect

P. Scheirich, P. Pravec, P. Kušnirák +34

We obtained thorough photometric observations of two binary near-Earth asteroids (66391) Moshup = 1999 KW4 and (88710) 2001 SL9 taken from 2000 to 2019 and derived physical and dyn…

astro-ph.HE2019★ 30 cited

Investigating the multiwavelength behaviour of the flat spectrum radio quasar CTA 102 during 2013-2017

F. D'Ammando, C. M. Raiteri, M. Villata +94

We present a multiwavelength study of the flat-spectrum radio quasar CTA 102 during 2013-2017. We use radio-to-optical data obtained by the Whole Earth Blazar Telescope, 15 GHz dat…

astro-ph.HE2019★ 76 cited

The first six months of the Advanced LIGO's and Advanced Virgo's third observing run with GRANDMA

S. Antier, S. Agayeva, V. Aivazyan +74

We present the Global Rapid Advanced Network Devoted to the Multi-messenger Addicts (GRANDMA). The network consists of 21 telescopes with both photometric and spectroscopic facilit…

astro-ph.SR2019★ 15 cited

Spectral diagnostics of cool flare loops observed by SST: I. Inversion of the Ca II 8542 Å and H lines

Július Koza, David Kuridze, Petr Heinzel +3

Flare loops form an integral part of eruptive events, being detected in the range of temperatures from X-rays down to cool chromospheric-like plasmas. While the hot loops are routi…

astro-ph.HE2019★ 12 cited

The beamed jet and quasar core of the distant blazar 4C 71.07

C. M. Raiteri, M. Villata, M. I. Carnerero +5

The object 4C 71.07 is a high-redshift blazar whose spectral energy distribution shows a prominent big blue bump and a strong Compton dominance. We present the results of a two-yea…

astro-ph.HE2019

Theoretical model of hydrodynamic jet formation from accretion disks with turbulent viscosity

E. Arshilava, M. Gogilashvili, V. Loladze +4

We develop the theoretical model for the analytic description of hydrodynamic jets from protostellar disks employing the Beltrami-Bernoulli flow configuration of disk-jet structure…

astro-ph.CO2019★ 8 cited

Computing 3 point correlation function randoms counts without the randoms catalogue

David W. Pearson, Lado Samushia

As we move towards future galaxy surveys, the three-point statistics will be increasingly leveraged to enhance the constraining power of the data on cosmological parameters. An ess…

astro-ph.SR2019★ 32 cited

Magneto-Rossby waves in the solar tachocline and the annual variations in solar activity

Tamar Gachechiladze, Teimuraz V. Zaqarashvili, Eka Gurgenashvili +4

Annual oscillations have been detected in many indices of solar activity during many cycles. Recent multi spacecraft observations of coronal bright points revealed slow retrograde…

astro-ph.EP2019★ 12 cited

Long-term photometric monitoring of the dwarf planet (136472) Makemake

T. A. Hromakina, I. N. Belskaya, Yu. N. Krugly +17

We studied the rotational properties of the dwarf planet Makemake. The photometric observations were carried out at different telescopes between 2006 and 2017. Most of the measurem…

astro-ph.SR2019★ 3 cited

Comparative analysis of solar radio bursts before and during CME propagation

G. Dididze, B. M. Shergelashvili, V. N. Melnik +5

As is well known, CME propagation often results in the fragmentation of the solar atmosphere on smaller regions of density (magnetic field) enhancement (depletion). It is expected…

astro-ph.CO2019★ 148 cited

Numerical Simulations of Gravitational Waves from Early-Universe Turbulence

Alberto Roper Pol, Sayan Mandal, Axel Brandenburg +2

We perform direct numerical simulations of magnetohydrodynamic turbulence in the early universe and numerically compute the resulting stochastic background of gravitational waves a…

astro-ph.HE2019★ 41 cited

Linear stability analysis of magnetized relativistic rotating jets

Gianluigi Bodo, George Mamatsashvili, Paola Rossi +1

We carry out a linear stability analysis of a magnetized relativistic rotating cylindrical jet flow using the approximation of zero thermal pressure. We identify several modes of i…

astro-ph.HE2019★ 31 cited

A multi-wavelength analysis of a collection of short-duration GRBs observed between 2012-2015

S. B. Pandey, Y. Hu, A. J. Castro-Tirado +71

We investigate the prompt emission and the afterglow properties of short duration gamma-ray burst (sGRB) 130603B and another eight sGRB events during 2012-2015, observed by several…

astro-ph.SR2019★ 85 cited

Mapping the magnetic field of flare coronal loops

D. Kuridze, M. Mathioudakis, H. Morgan +9

Here we report on the unique observation of flaring coronal loops at the solar limb using high resolution imaging spectropolarimetry from the Swedish 1-meter Solar Telescope. The v…

astro-ph.HE2019★ 25 cited

Optical Variability of TeV Blazars on long time-scales

Haritma Gaur, Alok C. Gupta, R. Bachev +12

We present the results of photometric observations of three TeV blazars, 3C 66A, S5 0954+658 and BL Lacertae, during the period 2013--2017. Our extensive observations were performe…

astro-ph.EP2019★ 12 cited

Sectoral r modes and periodic RV variations of Sun-like stars

A. F. Lanza, L. Gizon, T. V. Zaqarashvili +2

Radial velocity (RV) measurements are used to search for planets orbiting late-type main-sequence stars and confirm the transiting planets. The most advanced spectrometers are appr…

astro-ph.EP2019★ 90 cited

Asteroid pairs: a complex picture

P. Pravec, P. Fatka, D. Vokrouhlický +45

We studied 93 asteroid pairs. We estimated times elapsed since separation of pair members that are between 7*10^3 and a few 10^6 yr. We derived the rotation periods for all the pri…