M. Manganaro
A5072743006- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Dark Matter and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Neutrino Physics Research
- Particle Detector Development and Performance
- Astrophysical Phenomena and Observations
- Particle physics theoretical and experimental studies
- Nuclear physics research studies
- Particle Accelerators and Free-Electron Lasers
- Quantum Chromodynamics and Particle Interactions
- Pulsars and Gravitational Waves Research
- Astronomical and nuclear sciences
- Nuclear Physics and Applications
- Astronomical Observations and Instrumentation
- High-Energy Particle Collisions Research
- Cosmology and Gravitation Theories
- Atomic and Molecular Physics
- Semiconductor Quantum Structures and Devices
- Radiation Detection and Scintillator Technologies
- Noncommutative and Quantum Gravity Theories
- Solar and Space Plasma Dynamics
- Astronomy and Astrophysical Research
- Nanowire Synthesis and Applications
- Nuclear reactor physics and engineering
University of Rijeka
2018-2024
Universitat de Barcelona
2021-2024
Institut d'Estudis Espacials de Catalunya
2024
Centro Brasileiro de Pesquisas Físicas
2017-2024
MAGIC Telescopes
2015-2023
CTA Observatory
2023
National Institute for Astrophysics
2021-2023
Max Planck Institute for Physics
2017-2023
University of Osijek
2018-2023
Turku Centre for Computer Science
2021-2023
We present the first joint analysis of gamma-ray data from MAGIC Cherenkov telescopes and Fermi Large Area Telescope (LAT) to search for signals dark matter annihilation in dwarf satellite galaxies. combine 158 hours Segue 1 observations with 6-year 15 galaxies by -LAT. obtain limits on cross-section particle masses between 10 GeV 100 TeV—the widest mass range ever explored a single analysis. These improve previously published -LAT results up factor two at certain masses. Our new inclusive...
The exploration of the universe has recently entered a new era thanks to multi-messenger paradigm, characterized by continuous increase in quantity and quality experimental data that is obtained detection various cosmic messengers (photons, neutrinos, rays gravitational waves) from numerous origins. They give us information about their sources properties intergalactic medium. Moreover, astronomy opens up possibility search for phenomenological signatures quantum gravity. On one hand, most...
Abstract A neutrino with energy ∼290 TeV, IceCube-170922A, was detected in coincidence the BL Lac object TXS 0506+056 during enhanced gamma-ray activity, chance being rejected at ∼3 σ level. We monitored very-high-energy (VHE) band Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) telescopes for ∼41 hr from 1.3 to 40.4 days after detection. Day-timescale variability is clearly resolved. interpret quasi-simultaneous and broadband electromagnetic observations a novel one-zone...
The flat-spectrum radio quasar PKS 1441+25 at a redshift of z = 0.940 is detected between 40 and 250 GeV with significance 25.5σ using the MAGIC telescopes. Together gravitationally lensed blazar QSO B0218+357 (z 0.944), most distant very high energy (VHE) to date. observations were triggered by an outburst in 2015 April seen energies Large Area Telescope on board Fermi. Multi-wavelength suggest subdivision state into two distinct flux states. In band covered MAGIC, variability timescale...
It is widely believed that the bulk of Galactic cosmic rays are accelerated in supernova remnants (SNRs). However, no observational evidence presence particles PeV energies SNRs has yet been found. The young historical SNR Cassiopeia A (Cas A) appears as one best candidates to study acceleration processes. Between December 2014 and October 2016 we observed Cas with MAGIC telescopes, accumulating 158 hours good-quality data. We derived spectrum source from 100 GeV 10 TeV. also analysed...
We present a measurement of the extragalactic background light (EBL) based on joint likelihood analysis 32 gamma-ray spectra for 12 blazars in redshift range z = 0.03 to 0.944, obtained by MAGIC telescopes and Fermi-LAT. The EBL is part diffuse radiation spanning ultraviolet, visible infrared bands. Major contributors are emitted stars through history universe, fraction it which was absorbed dust galaxies re-emitted at longer wavelengths. can be studied indirectly its effect very-high energy...
The yields of evaporation residues, fusion-fission, and quasifission fragments in the $^{48}\mathrm{Ca}+^{144,154}\mathrm{Sm}$ $^{16}\mathrm{O}+^{186}\mathrm{W}$ reactions are analyzed framework combined theoretical method based on dinuclear system concept advanced statistical model. measured residues for $^{48}\mathrm{Ca}+^{154}\mathrm{Sm}$ reaction can be well reproduced. fission decomposed into contributions coming from quasifission, fast-fission. decrease yield at large collision...
Context. QSO B0218+357 is a gravitationally lensed blazar located at redshift of 0.944. The gravitational lensing splits the emitted radiation into two components that are spatially indistinguishable by gamma-ray instruments, but separated 10–12 day delay. In July 2014, experienced violent flare observed Fermi-LAT and followed MAGIC telescopes.
Aims. We aim to characterize the multiwavelength emission from Markarian 501 (Mrk 501), quantify energy-dependent variability, study potential multiband correlations, and describe temporal evolution of broadband within leptonic theoretical scenarios. Methods. organized a campaign take place between March July 2012. Excellent coverage was obtained with more than 25 instruments, including MAGIC, FACT VERITAS Cherenkov telescopes, instruments on board Swift Fermi spacecraft, telescopes operated...
Abstract In this work, we analyzed multiwavelength data of the BL Lac object S5 0716+714 to investigate its emission mechanisms during a flaring state observed in early 2015. We examined temporal behavior and broadband spectral energy distributions (SEDs) flare. The size γ -ray region was estimated based on variability timescale. To explore properties 0716+714, employed three one-zone models: synchrotron self-Compton (SSC) model, SSC plus external Compton (EC) pp interactions reproduce SEDs....
We report on simultaneous broadband observations of the TeV-emitting blazar Markarian 501 between 1 April and 10 August 2013, including first detailed characterization synchrotron peak with Swift NuSTAR. During campaign, nearby BL Lac object was observed in both a quiescent an elevated state. The campaign includes NuSTAR, MAGIC, VERITAS, Fermi Large Area Telescope (LAT), X-ray UV Optical Telescope, various ground-based optical instruments, GASP-WEBT program, as well radio by OVRO,...
Clusters of galaxies are expected to be reservoirs cosmic rays (CRs) that should produce diffuse gamma-ray emission due their hadronic interactions with the intra-cluster medium. The nearby Perseus cool-core cluster, identified as most promising target search for such an emission, has been observed MAGIC telescopes at very-high energies (VHE, E>100 GeV) a total 253 hr from 2009 2014. active nuclei NGC 1275, central dominant galaxy and IC 310, lying about 0.6$^\circ$ centre, have detected...
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 other wavelengths. FRB 121102 so far the only source known to repeatedly emit FRBs and associated a host galaxy redshift |$z$| ≃ 0.193. We conducted simultaneous observations of Arecibo MAGIC telescopes during several epochs in 2016–2017. This allowed time-scale burst emission...
We study the multi-band variability and correlations of TeV blazar Mrk 421 on year time scales, which can bring additional insight processes responsible for its broadband emission. observed in very high energy (VHE) gamma-ray range with Cherenkov telescope MAGIC-I from March 2007 to June 2009 a total 96 hours effective after quality cuts. The VHE flux is quantified several methods, including Bayesian Block algorithm, applied data telescopes first time. 2.3 long MAGIC light curve complemented...
Abstract Extreme high-frequency-peaked BL Lac objects (EHBLs) are blazars that exhibit extremely energetic synchrotron emission. They also feature nonthermal gamma-ray emission whose peak lies in the very high-energy (VHE, E > 100 GeV) range, and some sources exceeds 1 TeV: this is case for hard-TeV EHBLs such as 1ES 0229+200. With aim of increasing EHBL population, 10 targets were observed with MAGIC telescopes from 2010 to 2017, a total 265 hr good-quality data. The data complemented by...
Starburst galaxies and star-forming active galactic nuclei (AGN) are among the candidate sources thought to contribute appreciably extragalactic gamma-ray neutrino backgrounds. NGC 1068 is brightest of found emit gamma rays from 0.1 50 GeV. Precise measurements high-energy spectrum crucial study particle accelerators probe dominant emission mechanisms. We have carried out 125 hours observations with MAGIC telescopes in order search for very high energy band. did not detect significant...
Mrk501 is a very high-energy (VHE) gamma-ray blazar located at z=0.034. During period of two weeks in July 2014, the highest X-ray activity was observed ~14 years operation Neil Gehrels Swift Gamma-ray Burst Observatory. We characterize broadband variability from radio to VHE gamma rays, and evaluate whether it can be interpreted within theoretical scenarios widely used explain emission blazars. The temporal evolution most prominent variable segments SED described with one-zone synchrotron...
The possibility of anisotropies in the speed light relative to limiting electrons is considered. absence sidereal variations energy Compton-edge photons at European Synchrotron Radiation Facility's GRAAL facility constrains such representing first nonthreshold collision-kinematics study Lorentz violation. When interpreted within minimal standard-model extension, this result yields two-sided limit 1.6×10−14 95% confidence level on a combination parity-violating photon and electron...
The angular distributions of fission fragments for the $^{32}\mathrm{S}+^{184}\mathrm{W}$ reaction at center-of-mass energies 118.8, 123.1, 127.3, 131.5, 135.8, 141.1, and 144.4 MeV are measured. experimental excitation function is obtained. anisotropy (${\mathcal{A}}_{\mathrm{exp}}$) found by extrapolating each fragment distribution. measured cross sections $^{32}\mathrm{S}+^{182,184}\mathrm{W}$ decomposed into fusion-fission, quasifission, fast-fission contributions dinuclear system model...
We report on the detection of flaring activity from Fanaroff-Riley I radio galaxy NGC 1275 in very-high-energy (VHE, E $>$ 100 GeV) gamma rays with MAGIC telescopes. Observations were performed between 2016 September and 2017 February as part a monitoring program. The brightest outburst $\sim1.5$ times Crab Nebula flux above GeV (C.U.) was observed during night December 31 January 1 (fifty higher than mean previously measured two observational campaigns 2009 2011). Significant variability...
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 February B). MAGIC observations were triggered the optical flux observed Phase A, corresponding to brightest ever reported state of source R -band. Aims .The comprehensive dataset collected is investigated order shed light on mechanism broadband emission. Methods Multi-wavelength curves have been studied together with spectral energy...
Spontaneous breaking of Lorentz symmetry at energies on the order Planck energy or lower is predicted by many quantum gravity theories, implying non-trivial dispersion relations for photon in vacuum. Consequently, gamma-rays different energies, emitted simultaneously from astrophysical sources, could accumulate measurable differences their time flight until they reach Earth. Such tests have been carried out past using fast variations gamma-ray flux pulsars, and more recently active galactic...