Arnau Aguasca-Cabot
A5066983313- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Dark Matter and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Neutrino Physics Research
- Astrophysical Phenomena and Observations
- Particle Detector Development and Performance
- Pulsars and Gravitational Waves Research
- Particle Accelerators and Free-Electron Lasers
- Particle physics theoretical and experimental studies
- Astronomical Observations and Instrumentation
- Astronomy and Astrophysical Research
- Cosmology and Gravitation Theories
- Stellar, planetary, and galactic studies
- Computational Physics and Python Applications
- Radiation Detection and Scintillator Technologies
- Solar and Space Plasma Dynamics
- Medical Imaging Techniques and Applications
- Noncommutative and Quantum Gravity Theories
- Black Holes and Theoretical Physics
- Ionosphere and magnetosphere dynamics
- Particle accelerators and beam dynamics
- Radioactivity and Radon Measurements
- Atmospheric Ozone and Climate
- Historical Astronomy and Related Studies
Universitat de Barcelona
2023-2024
Institut d'Estudis Espacials de Catalunya
2023-2024
TU Dortmund University
2023
University of Łódź
2023
University of Turku
2023
Niels Brock
2023
University of Copenhagen
2023
Main Astronomical Observatory
2023
Taras Shevchenko National University of Kyiv
2023
National Academy of Sciences of Ukraine
2023
Context. Traditionally, TeV- γ -ray astronomy has been conducted by experiments employing proprietary data and analysis software. However, the next generation of instruments, such as Cherenkov Telescope Array Observatory (CTAO), will be operated open observatories. Alongside data, they also make associated software tools available to a wider community. This necessity prompted development open, high-level, astronomical customized for high-energy astrophysics. Aims. In this article, we present...
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...
LHAASO J2108+5157 is one of the few known unidentified Ultra-High-Energy (UHE) gamma-ray sources with no Very-High-Energy (VHE) counterpart, recently discovered by collaboration. We observed in X-ray band XMM-Newton 2021 for a total 3.8 hours and at TeV energies Large-Sized Telescope prototype (LST-1), yielding 49 good quality data. In addition, we analyzed 12 years Fermi-LAT data, to better constrain emission its High-Energy (HE) counterpart 4FGL J2108.0+5155. found an excess (3.7 sigma)...
Abstract Approximately one hundred sources of very-high-energy (VHE) gamma rays are known in the Milky Way, detected with a combination targeted observations and surveys. A survey entire Galactic Plane energy range from few tens GeV to TeV has been proposed as Key Science Project for upcoming Cherenkov Telescope Array Observatory (CTAO). This article presents status studies towards Survey (GPS). We build make publicly available sky model that combines data recent gamma-ray emitters...
Aims. We present the first multiwavelength study of Mrk 501 that contains simultaneous very-high-energy (VHE) γ -ray observations and X-ray polarization measurements from Imaging Polarimetry Explorer (IXPE). Methods. used radio-to-VHE data a campaign carried out between March 1, 2022, July 19, 2022 (MJD 59639 to MJD 59779). The were performed by MAGIC, Fermi -LAT, NuSTAR , Swift (XRT UVOT), several other instruments cover optical radio bands complement IXPE pointings. characterized dynamics...
Monochromatic gamma-ray signals constitute a potential smoking gun signature for annihilating or decaying dark matter particles that could relatively easily be distinguished from astrophysical instrumental backgrounds. We provide an updated assessment of the sensitivity Cherenkov Telescope Array (CTA) to such signals, based on observations Galactic centre region as well selected dwarf spheroidal galaxies. find current limits and detection prospects masses above 300 GeV will significantly...
Abstract The Lorentz Invariance Violation (LIV), a proposed consequence of certain quantum gravity (QG) scenarios, could instigate an energy-dependent group velocity for ultra-relativistic particles. This energy dependence, although suppressed by the massive QG scale E_QG, expected to be on level Planck 1.22 × 10 19 GeV, is potentially detectable in astrophysical observations. In this scenario, cosmological distances traversed photons act as amplifier effect. By leveraging observation...
Mrk 421 was in its most active state around early 2010, which led to the highest TeV gamma-ray flux ever recorded from any galactic nuclei. We aim characterize multiwavelength behavior during this exceptional year for 421, and evaluate whether it is consistent with picture derived data other less years. investigated period November 5, 2009, (MJD 55140) until July 3, 55380) extensive coverage very-high-energy (VHE; E$\,>\,$100$\,$GeV) gamma rays radio MAGIC, VERITAS, Fermi-LAT, RXTE, Swift,...
Context. The supernova remnant (SNR) W44 and its surroundings are a prime target for studying the acceleration of cosmic rays (CRs). Several previous studies established an extended gamma-ray emission that is set apart from radio shell W44. This thought to originate escaped high-energy CRs interact with surrounding dense molecular cloud complex. Aims. We present detailed analysis Fermi-LAT data emphasis on spatial spectral properties surroundings. also report results observations performed...
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 Cherenkov) collaboration, covering wide energy range from radio to very high-energy (VHE, 100 GeV $<$ E TeV) gamma rays was organised study its evolution. These observations resulted consistent detection of source over six consecutive nights VHE gamma-ray domain. Combining these nightly with an extensive set...
Mrk,421 was in its most active state around early 2010, which led to the highest TeV gamma-ray flux ever recorded from any galactic nuclei (AGN). We aim characterize multiwavelength behavior during this exceptional year for Mrk,421, and evaluate whether it is consistent with picture derived data other less years. investigated period November 5, 2009, (MJD 55140) until July 3, 55380) extensive coverage very-high-energy (VHE; E$,>,$100$,$GeV) gamma rays radio MAGIC, VERITAS Fermi -LAT RXTE...
The recurrent nova RS Ophiuchi (RS Oph) underwent a thermonuclear eruption in August 2021. In this event, Oph was detected by the High Energy Stereoscopic System ( H.E.S.S. ), Major Atmospheric Gamma Imaging Cherenkov (MAGIC), and first Large-Sized Telescope LST-1 ) of future Array Observatory (CTAO) at very-high gamma-ray energies above 100 This means that novae are new class very-high-energy (VHE) emitters. We report analysis observations with . constrain particle population causes...
Blazars exhibit strong variability across the entire electromagnetic spectrum, including periods of high-flux states commonly known as flares. The physical mechanisms in blazar jets responsible for flares remain poorly understood to date. Our aim is better understand emission during using X-ray polarimetry and broadband observations from archetypical TeV Mrk 421, which can be studied with higher accuracy than other blazars that are dimmer and/or located farther away. We a flaring activity...
Abstract Massive brane fluctuations, called branons, behave as weakly interacting massive particles, which is one of the most favored class candidates to fulfill role dark matter (DM), an elusive kind beyond Standard Model. We present a multi-target search in dwarf spheroidal galaxies for branon DM annihilation signatures with total exposure 354 hours ground-based gamma-ray telescope system MAGIC. This led constraining limits on sub-TeV and multi-TeV mass range. Our stringent limit...
Among the blazars whose emission has been detected up to very high-energy (VHE; $100 GeV < E 100 TeV$) γ rays, intermediate synchrotron-peaked BL Lacs (IBLs) are quite rare. The IBL (z = 0.117) exhibited intense flaring activity in 2020. Detailed characterization of source from radio γ-ray energies was achieved with quasi-simultaneous observations, which led first-time detection VHE MAGIC telescopes. In this work, we present a comprehensive multiwavelength (MWL) view specific focus on...
Abstract A wide variety of Galactic sources show transient emission at soft and hard X-ray energies: low-mass high-mass binaries containing compact objects, isolated neutron stars exhibiting extreme variability as magnetars well pulsar wind nebulae. Although most them can up to MeV and/or GeV energies, many have not yet been detected in the TeV domain by Imaging Atmospheric Cherenkov Telescopes. In this paper, we explore feasibility detecting new transients with Telescope Array Observatory...
ABSTRACT A deep survey of the Large Magellanic Cloud at ∼0.1–100 TeV photon energies with Cherenkov Telescope Array is planned. We assess detection prospects based on a model for emission galaxy, comprising four known emitters, mock populations sources, and interstellar galactic scales. also detectability 30 Doradus SN 1987A, constraints that can be derived nature dark matter. The will allow fine spectral studies N 157B, 132D, LMC P3, C, half dozen other sources should revealed, mainly...
Abstract Galaxy clusters are expected to be both dark matter (DM) reservoirs and storage rooms for the cosmic-ray protons (CRp) that accumulate along cluster's formation history. Accordingly, they excellent targets search signals of DM annihilation decay at γ -ray energies predicted sources large-scale emission due hadronic interactions in intracluster medium (ICM). In this paper, we estimate sensitivity Cherenkov Telescope Array (CTA) detect diffuse from Perseus galaxy cluster. We first...
The Cherenkov Telescope Array Observatory (CTAO) is the next-generation ground-based gamma-ray observatory currently under construction. It will improve over current generation of imaging atmospheric telescopes (IACTs) by a factor five to ten in sensitivity and it be able observe whole sky from combination two sites: northern site La Palma, Spain, southern one Paranal, Chile. CTAO also first open observatory. Accordingly, data processing pipeline developed as open-source software ctapipe...
Aims. LST-1, the prototype of Large-Sized Telescope for upcoming Cherenkov Array Observatory, is concluding its commissioning in Observatorio del Roque de los Muchachos on island La Palma. The proximity LST-1 (Large-Sized 1) to two MAGIC (Major Atmospheric Gamma Imaging Cherenkov) telescopes permits observations same gamma-ray events with both systems. Methods. We describe joint LST-1+MAGIC analysis pipeline and use simultaneous Crab Nebula Monte Carlo simulations assess performance...
Context. To date, three pulsars have been firmly detected by imaging atmospheric Cherenkov telescopes (IACTs). Two of them reached the TeV energy range, challenging models very high-energy (VHE) emission in pulsars. More precise observations are needed to better characterize pulsar at these energies. The LST-1 is prototype large-sized telescopes, which will be part Telescope Array Observatory (CTAO). Its improved performance over previous IACTs makes it well suited for studying Aims. In this...
Context . Imaging atmospheric Cherenkov telescopes (IACTs) are used to observe very high-energy photons from the ground. Gamma rays indirectly detected through light emitted by air showers they induce. The new generation of experiments, in particular Telescope Array Observatory (CTAO), sets ambitious goals for discoveries gamma-ray sources and precise measurements already discovered ones. To achieve these goals, both hardware data analysis must employ cuttingedge techniques. This also...
The supernova remnant (SNR) and its surroundings are a prime target for studying the acceleration of cosmic rays (CRs). Several previous studies established an extended gamma-ray emission that is set apart from radio shell This thought to originate escaped high-energy CRs interact with surrounding dense molecular cloud complex. We present detailed analysis data emphasis on spatial spectral properties surroundings. also report results observations performed MAGIC telescopes northwestern...