A5030382478- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Radio Astronomy Observations and Technology
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Astrophysical Phenomena and Observations
- Neutrino Physics Research
- Pulsars and Gravitational Waves Research
- Particle physics theoretical and experimental studies
- Particle Accelerators and Free-Electron Lasers
- Astronomical Observations and Instrumentation
- Astronomy and Astrophysical Research
- Medical Imaging Techniques and Applications
- Radiation Detection and Scintillator Technologies
- Cosmology and Gravitation Theories
- Galaxies: Formation, Evolution, Phenomena
- Noncommutative and Quantum Gravity Theories
- SAS software applications and methods
- Stellar, planetary, and galactic studies
- Precipitation Measurement and Analysis
- Laser Design and Applications
- Terahertz technology and applications
- Black Holes and Theoretical Physics
- Gyrotron and Vacuum Electronics Research
- Adaptive optics and wavefront sensing
National Institute for Astrophysics
2012-2024
Universitat de Barcelona
2024
Institut d'Estudis Espacials de Catalunya
2024
Astronomical Observatory of Rome
2011-2024
University of Turku
2023
Brera Astronomical Observatory
2010-2023
Istituto di Astrofisica Spaziale e Fisica cosmica di Palermo
2023
Centre National de la Recherche Scientifique
2020-2023
TU Dortmund University
2023
University of Łódź
2023
Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. huge potential in astrophysics, particle physics and cosmology. CTA is an international initiative to build next generation instrument, factor 5-10 improvement sensitivity 100 GeV 10 TeV range extension energies well below above TeV. will consist two arrays (one north, one south) for full sky coverage be operated as open observatory....
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...
Very high energy (VHE) γ-ray emission from the flat spectrum radio quasar (FSRQ) PKS 1222+21 (4C 21.35, z = 0.432) was detected with MAGIC Cherenkov telescopes during a short observation (∼0.5 hr) performed on 2010 June 17. The detection coincides high-energy MeV/GeV activity measured by Large Area Telescope (LAT) board Fermi satellite. VHE extends about 70 GeV up to at least 400 and can be well described power-law dN/dE ∝ E−Γ photon index Γ 3.75 ± 0.27stat 0.2syst. averaged integral flux...
We provide an updated assessment of the power Cherenkov Telescope Array (CTA) to search for thermally produced dark matter at TeV scale, via associated gamma-ray signal from pair-annihilating particles in region around Galactic centre. find that CTA will open a new window discovery potential, significantly extending range robustly testable models given standard cuspy profile density distribution. Importantly, even cored profile, projected sensitivity be sufficient probe various...
Supermassive black holes with masses of millions to billions solar are commonly found in the centers galaxies. Astronomers seek image jet formation using radio interferometry, but still suffer from insufficient angular resolution. An alternative method resolve small structures is measure time variability their emission. Here, we report on gamma-ray observations galaxy IC 310 obtained MAGIC telescopes revealing doubling scales faster than 4.8 min. Causality constrains size emission region be...
The Perseus galaxy cluster was observed by the MAGIC Cherenkov telescope for a total effective time of 24.4 hr during 2008 November and December. resulting upper limits on gamma-ray emission above 100 GeV are in range 4.6 to 7.5 x 10^{-12} cm^{-2} s^{-1} spectral indices from -1.5 -2.5, thereby constraining produced cosmic rays, dark matter annihilations, central radio NGC1275. Results compatible with cosmological simulations cosmic-ray-induced emission, average ray-to-thermal pressure <4%...
We present the results of stereoscopic observations satellite galaxy Segue 1 with MAGIC Telescopes, carried out between 2011 and 2013. With almost 160 hours good-quality data, this is deepest observational campaign on any dwarf performed so far in very high energy range electromagnetic spectrum. search large data sample for signals dark matter particles mass 100 GeV 20 TeV. For we use full likelihood analysis method, which provides optimal sensitivity to characteristic gamma-ray spectral...
Aims. We investigate the extension of very high-energy spectral tail Crab Pulsar at energies above 400 GeV.
We performed a 4.5-month multi-instrument campaign (from radio to VHE gamma rays) on Mrk421 between January 2009 and June 2009, which included VLBA, F-GAMMA, GASP-WEBT, Swift, RXTE, Fermi-LAT, MAGIC, Whipple, among other instruments collaborations. was found in its typical (non-flaring) activity state, with flux of about half that the Crab Nebula, yet light curves show significant variability at all wavelengths, highest being X-rays. determined power spectral densities (PSD) most wavelengths...
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...
Abstract The Cherenkov Telescope Array (CTA) is a next-generation ground-based observatory for gamma-ray astronomy at very high energies. Large-Sized prototype (LST-1) located the CTA-North site, on Canary Island of La Palma. LSTs are designed to provide optimal performance in lowest part energy range covered by CTA, down ≃20 GeV. LST-1 started performing astronomical observations 2019 November, during its commissioning phase, and it has been taking data ever since. We present first Crab...
ABSTRACT In recent years, a new generation of optical intensity interferometers has emerged, leveraging the existing infrastructure Imaging Atmospheric Cherenkov Telescopes (IACTs). The MAGIC telescopes host MAGIC-SII system (Stellar Intensity Interferometer), implemented to investigate feasibility and potential this technique on IACTs. After first successful measurements in 2019, was upgraded now features real-time, dead-time-free, 4-channel, GPU-based correlator. These hardware...
We report the results of observation nearby satellite galaxy Segue 1 performed by MAGIC-I ground-based gamma-ray telescope between November 2008 and March 2009 for a total 43.2 hours. No significant emission was found above background. Differential upper limits on flux are derived assuming various power-law slopes possible spectrum. Integral also calculated several spectra different energy thresholds. The values order 10^{-11} ph cm^{-2}$ s^{-1} 100 GeV 10^{-12} cm^{-2} 200 GeV. is currently...
The very high energy (VHE; E > 100 GeV) blazar Markarian 501 has a well-studied history of extreme spectral variability and is an excellent laboratory for studying the physical processes within jets active galactic nuclei. However, there are few detailed multiwavelength studies during its quiescent state, due to low luminosity. A short-term study was coordinated in March 2009, focusing around multi-day observation with Suzaku X-ray satellite including {\gamma}-ray data from VERITAS, MAGIC,...
Among more than fifty blazars detected in very high energy (VHE, E>100GeV) gamma-rays, only three belong to the subclass of Flat Spectrum Radio Quasars (FSRQs). MAGIC observed FSRQ PKS 1510-089 February-April 2012 during a activity state (HE, E>100 MeV) gamma-ray band by AGILE and Fermi. observations result detection source with significance 6.0 sigma. In agreement previous VHE source, we find no statistically significant variability daily, weekly or monthly time scales. The other two...
We report on the observation of $\gamma$-rays above 25\,GeV from Crab pulsar (PSR B0532+21) using MAGIC I telescope. Two data sets observations during winter period 2007/2008 and 2008/2009 are used. In order to discuss spectral shape 100\,MeV 100\,GeV, one year public {\it Fermi} Large Area Telescope ({\it Fermi}-LAT) also analyzed complement data. The extrapolation exponential cutoff spectrum determined with Fermi-LAT is inconsistent measurements, which requires a modification standard...
We use 73 h of stereoscopic data taken with the MAGIC telescopes to investigate very high-energy (VHE) gamma-ray emission Crab pulsar. Our show a highly significant pulsed signal in energy range from 50 400 GeV both main pulse (P1) and interpulse (P2) phase regions. provide widest spectra date VHE components peaks, these extend satellite-borne observatories. The good resolution background rejection system allows us cross-check correctness each spectral point pulsar by comparison...
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.
The W51 complex hosts the supernova remnant W51C which is known to interact with molecular clouds in star forming region W51B. In addition, a possible pulsar wind nebula CXO J192318.5+140305 was found likely associated remnant. Gamma-ray emission from this discovered by Fermi/LAT (between 0.2 and 50 GeV) H.E.S.S. (>1 TeV). spatial distribution of events could not be used pinpoint location among nebula, shell and/or cloud. However, modeling spectral energy presented collaboration suggests...
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...