activity
20092021
most cited2FHL: The Second Catalog of Hard Fermi-LAT Sources

306 citations · 5.9k across the 108 of their papers we have counts for

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astro-ph.HE2021★ 23 cited

Catalog of Long-Term Transient Sources in the First 10 Years of Fermi-LAT Data

L. Baldini, J. Ballet, D. Bastieri +112

We present the first Fermi Large Area Telescope (LAT) catalog of long-term -ray transient sources (1FLT). This comprises sources that were detected on monthly time intervals dur…

astro-ph.HE2021★ 12 cited

Identifying the 3FHL catalog: V. Results of the CTIO-COSMOS optical spectroscopy campaign 2019

M. Rajagopal, S. Marchesi, A. Kaur +3

As a follow-up of the optical spectroscopic campaign aimed at achieving completeness in the Third Catalog of Hard Fermi-LAT Sources (3FHL), we present here the results of a sample…

astro-ph.HE2021★ 103 cited

The Central Engines of Fermi Blazars

Vaidehi S. Paliya, A. Domínguez, M. Ajello +2

We present a catalog of central engine properties, i.e., black hole mass (mbh) and accretion luminosity (ld), for a sample of 1077 blazars detected with the Fermi~Large Area Telesc…

astro-ph.HE2020★ 20 cited

The First Gamma-ray Emitting BL Lacertae Object at the Cosmic Dawn

Vaidehi S. Paliya, A. Domínguez, C. Cabello +7

One of the major challenges in studying the cosmic evolution of relativistic jets is the identification of the high-redshift () BL Lacertae objects, a class of jetted active g…

astro-ph.HE2020★ 77 cited

Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

The Cherenkov Telescope Array Consortium, :, H. Abdalla +496

The Cherenkov Telescope Array (CTA), the new-generation ground-based observatory for -ray astronomy, provides unique capabilities to address significant open questions in astrop…

astro-ph.HE2020★ 135 cited

Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre

The Cherenkov Telescope Array Consortium, :, A. Acharyya +449

We provide an updated assessment of the power of the Cherenkov Telescope Array (CTA) to search for thermally produced dark matter at the TeV scale, via the associated gamma-ray sig…

astro-ph.HE2020★ 29 cited

Morphological and spectral study of 4FGL J1115.1-6118 in the region of the young massive stellar cluster NGC 3603

L. Saha, A. Domínguez, L. Tibaldo +4

We report a detailed study of an unidentified gamma-ray source located in the region of the compact stellar cluster NGC 3603. This is a star-forming region (SFR) powered by a massi…

astro-ph.HE2020★ 29 cited

Multi-Frequency Observations of the Candidate Neutrino Emitting Blazar BZB J0955+3551

Vaidehi S. Paliya, M. Böttcher, A. Olmo-García +5

The recent spatial and temporal coincidence of the blazar TXS 0506+056 with the IceCube detected neutrino event IC-170922A has opened up a realm of multi-messenger astronomy with b…

astro-ph.HE2020★ 13 cited

Hunting distant BL Lacs with the photometric technique using Swift and SARA

M. Rajagopal, A. Kaur, A. Ajello +5

BL Lacertae objects (BL Lacs) represent a large fraction (22\%) of gamma-ray sources in the Third Fermi Large Area Telescope catalog (3FGL). Nearly half of the BL Lac population re…

astro-ph.HE2020★ 95 cited

Systematic search for gamma-ray periodicity in active galactic nuclei detected by the Fermi Large Area Telescope

P. Peñil, A. Domínguez, S. Buson +8

We use nine years of gamma-ray data provided by the Fermi Large Area Telescope (LAT) to systematically study the light curves of more than two thousand active galactic nuclei (AGN)…

astro-ph.HE2020★ 48 cited

Study of the variable broadband emission of Markarian 501 during the most extreme Swift X-ray activity

MAGIC Collaboration, V. A. Acciari, S. Ansoldi +185

Mrk501 is a very high-energy (VHE) gamma-ray blazar located at z=0.034. During a period of two weeks in July 2014, the highest X-ray activity of Mrk501 was observed in ~14 years of…

astro-ph.HE2019★ 4 cited

Statistics of VHE gamma-Rays in Temporal Association with Radio Giant Pulses from the Crab Pulsar

MAGIC Collaboration, M. L. Ahnen, S. Ansoldi +146

The aim of this study is to search for evidence of a common emission engine between radio giant pulses (GPs) and very-high-energy (VHE, E>100 GeV) gamma-rays from the Crab pulsar.…

astro-ph.HE2019★ 32 cited

Spectral and spatial analysis of the dark matter subhalo candidates among Fermi Large Area Telescope unidentified sources

Javier Coronado-Blázquez, Miguel A. Sánchez-Conde, Mattia Di Mauro +5

Fermi-LAT unidentified sources (unIDs) have proven to be compelling targets for performing indirect dark matter (DM) searches. In a previous work, we found that among the 1235 unID…

astro-ph.HE2019★ 101 cited

Measurement of the Extragalactic Background Light using MAGIC and Fermi-LAT gamma-ray observations of blazars up to z = 1

MAGIC collaboration, V. A. Acciari, S. Ansoldi +157

We present a measurement of the extragalactic background light (EBL) based on a joint likelihood analysis of 32 gamma-ray spectra for 12 blazars in the redshift range z = 0.03 to 0…

astro-ph.HE2019★ 14 cited

Deep observations of the globular cluster M15 with the MAGIC telescopes

MAGIC Collaboration, V. A. Acciari, S. Ansoldi +153

A population of globular clusters (GCs) has been recently established by the Fermi-LAT telescope as a new class of GeV -ray sources. Leptons accelerated to TeV energies, in the…

astro-ph.HE2019★ 10 cited

MAGIC and Fermi-LAT gamma-ray results on unassociated HAWC sources

M. L. Ahnen, S. Ansoldi, L. A. Antonelli +336

The HAWC Collaboration released the 2HWC catalog of TeV sources, in which 19 show no association with any known high-energy (HE; E > 10 GeV) or very-high-energy (VHE; E > 300 GeV)…

astro-ph.HE2019★ 38 cited

A Fast Very High Energy -ray Flare from BL Lacertae during a Period of Multiwavelength activity in June 2015

MAGIC Collaboration, V. A. Acciari, S. Ansoldi +163

The mechanisms producing fast variability of the -ray emission in active galactic nuclei are under debate. The MAGIC telescopes detected a fast very high energy (VHE, E Ge…

astro-ph.HE2018★ 10 cited

Discovery of TeV -ray emission from the neighbourhood of the supernova remnant G24.7+0.6 by MAGIC

MAGIC Collaboration, V. A. Acciari, S. Ansoldi +151

SNR G24.7+0.6 is a 9.5 kyrs radio and -ray supernova remnant evolving in a dense medium. In the GeV regime, SNR G24.7+0.6 (3FHL\,J1834.1--0706e/FGES\,J1834.1--0706) shows a hard…

astro-ph.HE2018★ 71 cited

Periastron Observations of TeV Gamma-Ray Emission from a Binary System with a 50-year Period

The VERITAS Collaboration, A. U. Abeysekara, W. Benbow +212

We report on observations of the pulsar / Be star binary system PSR J2032+4127 / MT91 213 in the energy range between 100 GeV and 20 TeV with the VERITAS and MAGIC imaging atmosphe…

astro-ph.HE2018★ 55 cited

Constraining very-high-energy and optical emission from FRB 121102 with the MAGIC telescopes

MAGIC Collaboration, V. A. Acciari, S. Ansoldi +155

Fast radio bursts (FRBs) are bright flashes observed typically at GHz frequencies with millisecond duration, whose origin is likely extragalactic. Their nature remains mysterious,…

astro-ph.HE2018★ 84 cited

The extreme HBL behaviour of Markarian 501 during 2012

M. L. Ahnen, S. Ansoldi, L. A. Antonelli +276

A multiwavelength campaign was organized to take place between March and July of 2012. Excellent temporal coverage was obtained with more than 25 instruments, including the MAGIC,…

astro-ph.HE2018★ 235 cited

The blazar TXS 0506+056 associated with a high-energy neutrino: insights into extragalactic jets and cosmic ray acceleration

S. Ansoldi, L. A. Antonelli, C. Arcaro +146

A neutrino with energy of 290 TeV, IceCube-170922A, was detected in coincidence with the BL Lac object TXS~0506+056 during enhanced gamma-ray activity, with chance coincidenc…

astro-ph.HE2018★ 26 cited

The broad-band properties of the intermediate synchrotron peaked BL Lac S2 0109+22 from radio to VHE gamma rays

MAGIC Collaboration, S. Ansoldi, L. A. Antonelli +163

The MAGIC telescopes observed S2 0109+22 in 2015 July during its flaring activity in high energy gamma rays observed by Fermi-LAT. We analyse the MAGIC data to characterise the ver…

astro-ph.HE2018★ 44 cited

Leptonic and Hadronic Modeling of Fermi-LAT Hard Spectrum Quasars and Predictions for High-Energy Polarization

Vaidehi S. Paliya, Haocheng Zhang, Markus Böttcher +5

We present the results of a study of the time-averaged spectral energy distributions (SEDs) of eight flat spectrum radio quasars (FSRQs) present in the second catalog of high energ…