25 citations · 200 across the 29 of their papers we have counts for
30 papers
Revisiting EBL Constraints from Gamma-Ray Observations: A Critical Assessment and Methodological Improvements
K. Abe, S. Abe, J. Abhir +185
The extragalactic background light (EBL), ranging from the infrared to the ultraviolet bands, is the second most intense photon field in the universe, surpassed only by the cosmic…
Detection of the distant quasar OP 313 with the first Large-Sized Telescope of CTAO
K. Abe, S. Abe, J. Abhir +412
In December 2023, the Large-Sized Telescope prototype (LST-1) detected for the first time VHE -ray emission from the FSRQ OP~313 becoming the furthest blazar ever observed at VH…
Detectability of Polarized Gamma-ray Emission from Blazar Flares with COSI
Garrett A. Latiolais, Jorge Otero-Santos, Michela Negro +18
We investigate the detectability of polarized gamma-ray emission from blazar flares with the Compton Spectrometer and Imager (COSI). Using 17 years of Fermi Large Area Telescope ob…
Long-term study of the gamma-ray emission of Cygnus X-3 with MAGIC and Fermi-LAT
K. Abe, S. Abe, J. Abhir +185
Cygnus X-3 is a microquasar composed of a compact object of unknown nature closely orbiting around a Wolf-Rayet star. The particularities of this source make it a unique case among…
The January 2010 flare of Mrk421: Insights from a stochastic acceleration model
MAGIC collaboration, K. Abe, S. Abe +191
Mrk421 displayed its highest flux state ever observed in February of 2010 with very high TeV fluxes and interesting cross-band correlations and a spectral energy distribution (SED)…
Extreme Blazars Observed with MAGIC: Second Catalog Release
K. Abe, S. Abe, J. Abhir +353
Extremely high-peaked BL Lac objects - also named extreme blazars - are among the most energetic and persistent extragalactic accelerators in the Universe, defined by a synchrotron…
MAGIC observations of NGC 4278. The first low-luminosity radio galaxy with compact jets detected at TeV energies
S. Abe, J. Abhir, V. A. Acciari +189
The Large High Altitude Air Shower Observatory (LHAASO) Collaboration has recently reported the first detection at TeV energies of a low-luminosity radio galaxy, NGC 4278. The aim…
The IXPE and multifrequency polarimetric view of the extreme blazars 1ES 1101-232 and RGB J0710+591
Fabrizio Tavecchio, Dawoon E. Kim, Gabriel Emery +53
Multiwavelength polarimetry is a powerful tool to probe magnetic field and flow geometries in the relativistic jets of blazars. In this respect, particularly interesting are the so…
Instabilities at recollimation shocks in MHD jets
Stella Boula, Fabrizio Tavecchio, Gianluigi Bodo +4
AGN jet structure and stability remain uncertain; recollimation shocks are linked to morphology and variability, but the role of downstream instabilities is still unclear. We aim t…
Do multifrequency polarimetric observations of BL Lac rule out a hadronic origin for its X-ray emission?
F. Tavecchio, F. Bolis, E. Sobacchi +2
Recent multifrequency polarimetric observations of the eponymous blazar BL Lac reveal an extremely large degree of polarization in the optical band (average of , reaching $45…
How do recollimation-induced instabilities shape the propagation of hydrodynamic relativistic jets?
A. Costa, G. Bodo, F. Tavecchio +4
Recollimation is a phenomenon of particular importance in the dynamic evolution of jets and in the emission of high-energy radiation. Additionally, the full comprehension of this p…
The polarization of the synchrotron radiation from a recollimated jet: application to high-energy BL Lacs
Alberto Sciaccaluga, Agnese Costa, Fabrizio Tavecchio +3
Multifrequency polarimetry, recently extended to the X-ray band thanks to the Imaging X-ray Polarimetry Explorer (IXPE) satellite, is an essential tool for understanding blazar jet…
Probing the low-energy particle content of blazar jets through MeV observations
F. Tavecchio, L. Nava, A. Sciaccaluga +1
Many of the blazars observed by Fermi actually have the peak of their time-averaged gamma-ray emission outside the GeV Fermi energy range, at MeV energies. The detail…
Time-dependent modelling of short-term variability in the TeV-blazar VER J0521+211 during the major flare in 2020
MAGIC Collaboration, S. Abe, J. Abhir +228
The BL Lacertae object VER J0521+211 underwent a notable flaring episode in February 2020. A short-term monitoring campaign, led by the MAGIC (Major Atmospheric Gamma Imaging Chere…
Standardised formats and open-source analysis tools for the MAGIC telescopes data
S. Abe, J. Abhir, A. Abhishek +208
Instruments for gamma-ray astronomy at Very High Energies () have traditionally derived their scientific results through proprietary data and software. Data stand…
Insights from the first flaring activity of a high-synchrotron-peaked blazar with X-ray polarization and VHE gamma rays
MAGIC Collaboration, K. Abe, S. Abe +250
We study a flaring activity of the HSP Mrk421 that was characterized from radio to very-high-energy (VHE; E TeV) gamma rays with MAGIC, Fermi-LAT, Swift, XMM-Newton and sever…
Constraints on Lorentz invariance violation from the extraordinary Mrk 421 flare of 2014 using a novel analysis method
MAGIC Collaboration, S. Abe, J. Abhir +214
The Lorentz Invariance Violation (LIV), a proposed consequence of certain quantum gravity (QG) scenarios, could instigate an energy-dependent group velocity for ultra-relativistic…
Constraints on VHE gamma-ray emission of Flat Spectrum Radio Quasars with the MAGIC telescopes
MAGIC Collaboration
Flat spectrum radio quasars (FSRQs) constitute a class of jetted active galaxies characterized by a very luminous accretion disk, prominent and rapidly moving line-emitting cloud s…
The variability patterns of the TeV blazar PG 1553+113 from a decade of MAGIC and multi-band observations
MAGIC Collaboration, H. Abe, S. Abe +264
PG 1553+113 is one of the few blazars with a convincing quasi-periodic emission in the gamma-ray band. The source is also a very high-energy (VHE; >100 GeV) gamma-ray emitter. To b…
Stochastic acceleration in Extreme TeV BL Lacs through MCMC
Alberto Sciaccaluga, Fabrizio Tavecchio, Marco Landoni +1
Extreme TeV BL Lacs are a class of blazars with unique spectral and temporal features, not easily reproducible using standard one-zone models based on single shock acceleration. To…
Performance and first measurements of the MAGIC Stellar Intensity Interferometer
MAGIC Collaboration, S. Abe, J. Abhir +217
In recent years, a new generation of optical intensity interferometers has emerged, leveraging the existing infrastructure of Imaging Atmospheric Cherenkov Telescopes (IACTs). The…
FR0 jets and recollimation-induced instabilities
A. Costa, G. Bodo, F. Tavecchio +6
The recently discovered population of faint FR0 radiogalaxies has been interpreted as the extension to low power of the classical FRI sources. Their radio emission appears to be co…
Constraints on axion-like particles with the Perseus Galaxy Cluster with MAGIC
MAGIC Collaboration, H. Abe, S. Abe +211
Axion-like particles (ALPs) are pseudo-Nambu-Goldstone bosons that emerge in various theories beyond the standard model. These particles can interact with high-energy photons in ex…
Insights into the broad-band emission of the TeV blazar Mrk 501 during the first X-ray polarization measurements
S. Abe, J. Abhir, V. A. Acciari +260
We present the first multi-wavelength study of Mrk 501 including very-high-energy (VHE) gamma-ray observations simultaneous to X-ray polarization measurements from the Imaging X-ra…