E. Moretti
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View article: The very high energy view of gamma-ray bursts with the MAGIC telescopes
The very high energy view of gamma-ray bursts with the MAGIC telescopes Open
Gamma-ray bursts (GRBs) are one of the main targets for the observations of the MAGIC telescopes. As a result of the effort in improving the sensitivity of the instrument and the automatic follow-up strategy, MAGIC detected two GRBs in the…
View article: Performance and radiation damage mitigation strategy for silicon photomultipliers on LEO space missions
Performance and radiation damage mitigation strategy for silicon photomultipliers on LEO space missions Open
Space missions require lightweight, low-power consuming, radiation-tolerant components. Silicon photomultipliers (SiPMs) are increasingly used for detecting near-UV, optical, and infrared light in space due to their compact design, low cos…
View article: Radiation Damage on SiPM for High Energy Physics Experiments in space missions
Radiation Damage on SiPM for High Energy Physics Experiments in space missions Open
Silicon photomultipliers (SiPMs) are a popular choice for various applications, especially in astroparticle physics. These devices are coupled with organic or inorganic scintillators, allowing them to detect scintillation light and Cherenk…
View article: Theoretical implications on the very high energy emission from GRB 190114C
Theoretical implications on the very high energy emission from GRB 190114C Open
International audience
View article: arXiv : Combined searches for dark matter in dwarf spheroidal galaxies observed with the MAGIC telescopes, including new data from Coma Berenices and Draco
arXiv : Combined searches for dark matter in dwarf spheroidal galaxies observed with the MAGIC telescopes, including new data from Coma Berenices and Draco Open
Milky Way dwarf spheroidal galaxies (dSphs) are among the best candidates to search for signals of dark matter annihilation with Imaging Atmospheric Cherenkov Telescopes, given their high mass-to-light ratios and the fact that they are fre…
View article: Upper limits on the very high energy emission from GRBs observed by MAGIC
Upper limits on the very high energy emission from GRBs observed by MAGIC Open
The MAGIC collaboration has developed a dedicated observational strategy to repoint rapidly towards gamma-ray bursts (GRBs). In this contribution we present the information extracted from the large sample of the GRBs observed by MAGIC from…
View article: Shedding light on the highest energy emission from GRBs with MAGIC observations
Shedding light on the highest energy emission from GRBs with MAGIC observations Open
On 14th January 2019, the MAGIC collaboration achieved the first significant detection at TeV energies of a gamma-ray burst (GRB), namely GRB 190114C. This observation sets the first experimental proof of very high energy (VHE, >~100 GeV) …
View article: Calibration and performance of the readout system based on switched capacitor arrays for the Large-Sized Telescope of the Cherenkov Telescope Array
Calibration and performance of the readout system based on switched capacitor arrays for the Large-Sized Telescope of the Cherenkov Telescope Array Open
International audience
View article: Bright Gamma-Ray Flares Observed in GRB 131108A
Bright Gamma-Ray Flares Observed in GRB 131108A Open
GRB 131108A is a bright long gamma-ray burst (GRB) detected by the Large Area Telescope and the Gamma-ray Burst Monitor on board the Fermi Gamma-ray Space Telescope . Dedicated temporal and spectral analyses reveal three γ -ray flares domi…
View article: Following up GW Alerts With MAGIC: The Third LIGO/Virgo Observation Run
Following up GW Alerts With MAGIC: The Third LIGO/Virgo Observation Run Open
The first two LIGO and Virgo observation runs have been important milestones in the gravitational wave (GW) field, thanks to the detection of GW signals from ten binary black hole systems and a binary neutron star system. In order to fully…
View article: Following up Transient Sources at Very High Energies with MAGIC
Following up Transient Sources at Very High Energies with MAGIC Open
Several classes of sources are known to emit different messengers. Among them, transient sources are a special case, due to their serendipitous occurrence, time variability and duration on different timescales. They are associated with exp…
View article: Searching for GRBs at VHE with MAGIC: the status before CTA
Searching for GRBs at VHE with MAGIC: the status before CTA Open
Gamma-Ray Bursts (GRBs) are one of the main targets for current and next generation Imaging Atmospheric Cherenkov Telescopes (IACTs). Given their transient behavior, especially in the case of their prompt emission phase, performing fast fo…
View article: MAGIC follow-up of gravitational wave events in the third LIGO/Virgo observation run
MAGIC follow-up of gravitational wave events in the third LIGO/Virgo observation run Open
The search for gravitational wave (GW) signals has been very successful in the first two observing runs (O1 and O2) of the LIGO and Virgo interferometers. In total, eleven GW events were detected [1]: ten from the coalescence of binary bla…
View article: The calibration of the first Large-Sized Telescope of the Cherenkov Telescope Array
The calibration of the first Large-Sized Telescope of the Cherenkov Telescope Array Open
International audience
View article: Following up GW alerts with MAGIC: the third LIGO/Virgo observation run
Following up GW alerts with MAGIC: the third LIGO/Virgo observation run Open
The first two LIGO and Virgo observation runs have been important milestones in the gravitational wave (GW) field, thanks to the detection of GW signals from ten binary black hole systems and a binary neutron star system. In order to fully…
View article: Searching for GRBs at VHE with MAGIC: the status before CTA
Searching for GRBs at VHE with MAGIC: the status before CTA Open
Gamma-Ray Bursts (GRBs) are one of the main targets for current and next generation Imaging Atmospheric Cherenkov Telescopes (IACTs). Given their transient behavior, especially in the case of their prompt emission phase, performing fast fo…
View article: Following up Transient sources at Very High Energies with MAGIC
Following up Transient sources at Very High Energies with MAGIC Open
Several classes of sources are known to emit different messengers. Among them, transient sources are a special case, due to their serendipitous occurrence, time variability and duration on different timescales. They are associated with exp…
View article: A Decade of Gamma-Ray Bursts Observed by Fermi-LAT: The Second GRB Catalog
A Decade of Gamma-Ray Bursts Observed by Fermi-LAT: The Second GRB Catalog Open
The Large Area Telescope (LAT) aboard the Fermi spacecraft routinely observes high-energy emission from gamma-ray bursts (GRBs). Here we present the second catalog of LAT-detected GRBs, covering the first 10 yr of operations, from 2008 to …
View article: A fast, very-high-energy <i>γ</i>-ray flare from BL Lacertae during a period of multi-wavelength activity in June 2015
A fast, very-high-energy <i>γ</i>-ray flare from BL Lacertae during a period of multi-wavelength activity in June 2015 Open
The mechanisms producing fast variability of the γ -ray emission in active galactic nuclei (AGNs) are under debate. The MAGIC telescopes detected a fast, very-high-energy (VHE, E > 100 GeV) γ -ray flare from BL Lacertae on 2015 June 15. Th…
View article: MAGIC and<i>Fermi</i>-LAT gamma-ray results on unassociated HAWC sources
MAGIC and<i>Fermi</i>-LAT gamma-ray results on unassociated HAWC sources Open
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) sources. This catalog motivated follow-up studies by both t…
View article: Discovery of TeV γ-ray emission from the neighbourhood of the supernova remnant G24.7+0.6 by MAGIC
Discovery of TeV γ-ray emission from the neighbourhood of the supernova remnant G24.7+0.6 by MAGIC Open
SNR G24.7+0.6 is a 9.5 kyrs radio and gamma-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 spectral index (Γ∼2) up to 200 GeV, which makes it a good c…
View article: Extreme HBL behavior of Markarian 501 during 2012
Extreme HBL behavior of Markarian 501 during 2012 Open
Aims. We aim to characterize the multiwavelength emission from Markarian 501 (Mrk 501), quantify the energy-dependent variability, study the potential multiband correlations, and describe the temporal evolution of the broadband emission wi…
Constraining very-high-energy and optical emission from FRB 121102 with the MAGIC telescopes Open
Fast radio bursts (FRBs) are bright flashes observed typically at GHz frequencies with millisecond duration, whose origin is likely extragalactic. Their nature remains mysterious, motivating searches for counterparts at other wavelengths. …
View article: The Blazar TXS 0506+056 Associated with a High-energy Neutrino: Insights into Extragalactic Jets and Cosmic-Ray Acceleration
The Blazar TXS 0506+056 Associated with a High-energy Neutrino: Insights into Extragalactic Jets and Cosmic-Ray Acceleration Open
A neutrino with energy ∼290 TeV, IceCube-170922A, was detected in coincidence with the BL Lac object TXS 0506+056 during enhanced gamma-ray activity, with chance coincidence being rejected at ∼3 σ level. We monitored the object in the very…
View article: Multi-wavelength characterization of the blazar S5 0716+714 during an unprecedented outburst phase
Multi-wavelength characterization of the blazar S5 0716+714 during an unprecedented outburst phase Open
Context . The BL Lac object S5 0716+714, a highly variable blazar, underwent an impressive outburst in January 2015 (Phase A), followed by minor activity in February (Phase B). The MAGIC observations were triggered by the optical flux obse…
View article: Fermi-LAT Observations of LIGO/Virgo Event GW170817
Fermi-LAT Observations of LIGO/Virgo Event GW170817 Open
We present the Fermi Large Area Telescope (LAT) observations of the binary neutron star merger event GW170817 and the associated short gamma-ray burst (SGRB) GRB 170817A detected by the Fermi Gamma-ray Burst Monitor. The LAT was entering t…
View article: The broad-band properties of the intermediate synchrotron peaked BL Lac S2 0109+22 from radio to VHE gamma-rays
The broad-band properties of the intermediate synchrotron peaked BL Lac S2 0109+22 from radio to VHE gamma-rays Open
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 very high energy (VHE) gamma-ray emission of S2 0109+22, which…
View article: Gamma-ray flaring activity of NGC1275 in 2016–2017 measured by MAGIC
Gamma-ray flaring activity of NGC1275 in 2016–2017 measured by MAGIC Open
We report on the detection of flaring activity from the Fanaroff-Riley I radio galaxy NGC 1275 in very-high-energy (VHE, E > 100 GeV) gamma rays with the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes. The observations were p…