A5011121189- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Radio Astronomy Observations and Technology
- Dark Matter and Cosmic Phenomena
- Astrophysical Phenomena and Observations
- Neutrino Physics Research
- Particle Detector Development and Performance
- Particle Accelerators and Free-Electron Lasers
- Pulsars and Gravitational Waves Research
- Astronomical Observations and Instrumentation
- Particle physics theoretical and experimental studies
- Cosmology and Gravitation Theories
- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Gyrotron and Vacuum Electronics Research
- Solar and Space Plasma Dynamics
- Noncommutative and Quantum Gravity Theories
- Advanced X-ray and CT Imaging
- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Calibration and Measurement Techniques
- Advanced MEMS and NEMS Technologies
- Soil Moisture and Remote Sensing
- Force Microscopy Techniques and Applications
- Galaxies: Formation, Evolution, Phenomena
Universitat de Barcelona
2018-2024
Instituto de Astrofísica de Canarias
2021-2024
Universidad de La Laguna
2021-2024
Institut d'Estudis Espacials de Catalunya
2018-2024
University of Turku
2023
TU Dortmund University
2023
University of Łódź
2023
Foundation for Research and Technology Hellas
2023
University of Siena
2023
Boston University
2023
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...
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...
PKS 1510-089 is a flat spectrum radio quasar strongly variable in the optical and GeV range. We search for low-state VHE gamma-ray emission from 1510-089. aim to characterize model source broad-band context, which would provide baseline over high states flares could be better understood. use daily binned Fermi-LAT flux measurements of select observation periods MAGIC during low state activity. For selected times we compute average radio, IR, optical, UV, X-ray construct spectral energy...
The mechanisms producing fast variability of the $\gamma$-ray emission in active galactic nuclei are under debate. MAGIC telescopes detected a very high energy (VHE, E$>100$ GeV) flare from BL Lacertae on 2015 June 15. had maximum flux $(1.5\pm 0.3)\times 10^{-10}$ photons cm$^{-2}$ s$^{-1}$ and halving time $26\pm8$ minutes. observations were triggered by state optical (HE, MeV) bands. In this paper we present VHE data together with multiwavelength radio, optical, X-rays, HE $\gamma$ rays...
A population of globular clusters (GCs) has been recently established by the Fermi-LAT telescope as a new class GeV $\gamma$-ray sources. Leptons accelerated to TeV energies, in inner magnetospheres MSPs or their wind regions, should produce $\gamma$-rays through inverse Compton scattering dense radiation field from huge stars. We have conducted deep observations cluster M15 with MAGIC telescopes and used 165 hrs order search for emission. strong upper limit on flux $<3.2\times...
High-mass microquasars (HMMQs) are systems from which relativistic jets launched. At the scales of several times binary system size, expected to follow a helical path caused by interaction with strong stellar wind and orbital motion. Such trajectory has its influence on non-thermal emission jets, also depends strongly observing angle due Doppler boosting effects. We explore how HMMQ at small is affected impact motion jet propagation. studied broadband emission, radio gamma rays, produced in...
Context . The stellar wind in high-mass microquasars should interact with the jet. This interaction, coupled orbital motion, is expected to make jet follow a helical, nonballistic trajectory. energy dissipated by this through shocks for example, could lead nonthermal activity on scales significantly larger than system size. Aims We calculate broadband emission from affected impact of and motion microquasar. Methods employ prescription helical trajectory circular orbit. Subsequently, assuming...
Gamma-ray binaries are systems that emit non-thermal radiation peaking at energies above 1 MeV. One proposed scenario to explain their emission consists of a pulsar orbiting massive star, with particle acceleration taking place in shocks produced by the interaction stellar and winds. We develop semi-analytical model colliding-wind structure including dynamical effects orbital motion. apply general case LS 5039. The one-dimensional emitter geometry which is affected Coriolis forces owing Two...
SNR G24.7+0.6 is a 9.5 kyrs radio and $\gamma$-ray supernova remnant evolving in dense medium. In the GeV regime, (3FHL\,J1834.1--0706e/FGES\,J1834.1--0706) shows hard spectral index ($\Gamma$$\sim$2) up to $200$\,GeV, which makes it good candidate be observed with Cherenkov telescopes such as MAGIC. We field of view \snr\ MAGIC for total 31 hours. detect very high energy emission from an extended source located 0.34\degr\ away center SNR. The new source, named \mgc\ detected 5\,TeV, its...
LS 5039 is a gamma-ray binary system hosting compact object and massive O-type stellar companion. It presents broadband emission spectrum that goes from radio up to gamma rays with energies of few dozen TeV. In one the proposed physical scenarios, non-accreting pulsar non-thermal radiation comes an outflow produced by interaction winds. We present semi-analytical model computes dynamical evolution this outflow, as well its expected emission. compare results existent data 5039, paying special...
MAXI J1820+070 is a new low-mass microquasar hosting black hole recently discovered in X-rays by the instrument. It counterpart of ASASSN-18ey, optical few days before ASAS-SN. This source underwent major outburst 2018, during which it completed typical "q-shaped" path hardness-intensity diagram. MAGIC, VERITAS and H.E.S.S. gamma-ray telescopes observed sky position for total more than 90 hours 2018. In addition, some observations were carried out using MAGIC Central Pixel - dedicated...
Microquasars are binary systems consisting of a compact object and star that present relativistic jets. When the companion is high-mass star, significant interaction between stellar wind jets expected. In this work, an overview different effects strong may have in microquasar given. Both analytical estimates numerical simulations performed last years reviewed. The results model for non-thermal emission such at large scales also shown discussed. Observational studies two microquasars, Cygnus...
Microquasars are binary systems consisting of a compact object and star that present relativistic jets. When the companion is high-mass star, significant interaction between stellar wind jets expected. In this work, an overview different effects strong may have in microquasar given. Both analytical estimates numerical simulations performed last years reviewed. The results model for non-thermal emission such at large scales also shown discussed. Observational studies two microquasars, Cygnus...
X-ray and gamma-ray binaries are systems consisting of a compact object normally non-degenerate companion star. Most these sources have been shown to emit radiation in broad frequency range, from radio up X-rays sometimes gamma rays. We report on recent results very high-energy rays above 100 GeV obtained by the MAGIC Collaboration for Galactic MAXI J1820+070 1A 0535+262, binary HESS J0632+057. Multiwavelength data at lower energies also provided better contextualisation sources.
X-ray and gamma-ray binaries are systems consisting of a compact object normally non-degenerate companion star. Most these sources have been shown to emit radiation in broad frequency range, from radio up X-rays sometimes gamma rays. We report on recent results very high-energy rays above 100 GeV obtained by the MAGIC Collaboration for Galactic MAXI J1820+070 1A 0535+262, binary HESS J0632+057. Multiwavelength data at lower energies also provided better contextualisation sources.