A. Babić
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View article: The nonlinearity of helical springs: An energy-based approach
The nonlinearity of helical springs: An energy-based approach Open
A general expression for the elastic potential energy of a helical spring is derived using the basic concepts of elasticity theory and geometry. Both the translational and the rotational displacement of the spring's moving ends are conside…
View article: Alcohol intake and pancreatic cancer risk: An analysis from 30 prospective studies across Asia, Australia, Europe, and North America
Alcohol intake and pancreatic cancer risk: An analysis from 30 prospective studies across Asia, Australia, Europe, and North America Open
Background Alcohol is a known carcinogen, yet the evidence for an association with pancreatic cancer risk is considered as limited or inconclusive by international expert panels. We examined the association between alcohol intake and pancr…
View article: Combined search in dwarf spheroidal galaxies for branon dark matter annihilation signatures with the MAGIC telescopes
Combined search in dwarf spheroidal galaxies for branon dark matter annihilation signatures with the MAGIC telescopes Open
Massive brane fluctuations, called branons, behave as weakly interacting massive particles, which is one of the most favored class of candidates to fulfill the role of the dark matter (DM), an elusive kind of matter beyond the Standard Mod…
View article: Insights from the first flaring activity of a high synchrotron peaked blazar with X-ray polarization and VHE gamma rays
Insights from the first flaring activity of a high synchrotron peaked blazar with X-ray polarization and VHE gamma rays Open
Context. 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 …
View article: Time-dependent modelling of short-term variability in the TeV-blazar VER J0521+211 during the major flare in 2020
Time-dependent modelling of short-term variability in the TeV-blazar VER J0521+211 during the major flare in 2020 Open
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 a wide energy range from radi…
View article: Characterization of Markarian 421 during its most violent year: Multiwavelength variability and correlations
Characterization of Markarian 421 during its most violent year: Multiwavelength variability and correlations Open
Mrk 421 was in its most active state around early 2010, which led to the highest TeV gamma-ray flux ever recorded from any active galactic nuclei. We aim to characterize the multiwavelength behavior during this exceptional year for Mrk 421…
View article: Multiwavelength study of OT 081: broadband modelling of a transitional blazar
Multiwavelength study of OT 081: broadband modelling of a transitional blazar Open
OT 081 is a well-known, luminous blazar that is remarkably variable in many energy bands. We present the first broadband study of the source, which includes very high energy (VHE, $E\gt $ 100 GeV) $\gamma$-ray data taken by the MAGIC (Majo…
View article: Time-dependent modelling of short-term variability in the TeV-blazar VER J0521+211 during the major flare in 2020
Time-dependent modelling of short-term variability in the TeV-blazar VER J0521+211 during the major flare in 2020 Open
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 a wide energy range from radi…
View article: Insights from the first flaring activity of a high-synchrotron-peaked blazar with X-ray polarization and VHE gamma rays
Insights from the first flaring activity of a high-synchrotron-peaked blazar with X-ray polarization and VHE gamma rays Open
We study a flaring activity of the HSP Mrk421 that was characterized from radio to very-high-energy (VHE; E $>0.1$TeV) gamma rays with MAGIC, Fermi-LAT, Swift, XMM-Newton and several optical and radio telescopes. These observations include…
View article: Multi-wavelength study of OT 081: broadband modelling of a transitional blazar
Multi-wavelength study of OT 081: broadband modelling of a transitional blazar Open
OT 081 is a well-known, luminous blazar that is remarkably variable in many energy bands. We present the first broadband study of the source which includes very-high-energy (VHE, $E>$100\,GeV) $γ$-ray data taken by the MAGIC and H.E.S.S. i…
View article: Constraints on VHE gamma-ray emission of flat spectrum radio quasars with the MAGIC telescopes
Constraints on VHE gamma-ray emission of flat spectrum radio quasars with the MAGIC telescopes Open
Flat spectrum radio quasars (FSRQs) constitute a class of jetted active galaxies characterized by a very luminous accretion disc, prominent and rapidly moving line-emitting cloud structures (broad-line region, BLR), and a surrounding dense…
View article: Standardised formats and open-source analysis tools for the MAGIC telescopes data
Standardised formats and open-source analysis tools for the MAGIC telescopes data Open
Instruments for gamma-ray astronomy at Very High Energies ($E>100\,{\rm GeV}$) have traditionally derived their scientific results through proprietary data and software. Data standardisation has become a prominent issue in this field both …
View article: Characterisation of the Atmosphere in Very High Energy Gamma-Astronomy for Imaging Atmospheric Cherenkov Telescopes
Characterisation of the Atmosphere in Very High Energy Gamma-Astronomy for Imaging Atmospheric Cherenkov Telescopes Open
Ground-based observations of Very High Energy (VHE) gamma rays from extreme astrophysical sources are significantly influenced by atmospheric conditions. This is due to the atmosphere being an integral part of the detector when utilizing I…
View article: Constraints on Lorentz invariance violation from the extraordinary Mrk 421 flare of 2014 using a novel analysis method
Constraints on Lorentz invariance violation from the extraordinary Mrk 421 flare of 2014 using a novel analysis method Open
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 t…
View article: Constraints on Lorentz invariance violation from the extraordinary Mrk 421 flare of 2014 using a novel analysis method
Constraints on Lorentz invariance violation from the extraordinary Mrk 421 flare of 2014 using a novel analysis method Open
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 t…
View article: Performance and first measurements of the MAGIC stellar intensity interferometer
Performance and first measurements of the MAGIC stellar intensity interferometer Open
In recent years, a new generation of optical intensity interferometers has emerged, leveraging the existing infrastructure of Imaging Atmospheric Cherenkov Telescopes (IACTs). The MAGIC telescopes host the MAGIC-SII system (Stellar Intensi…
View article: Performance and first measurements of the MAGIC stellar intensity interferometer
Performance and first measurements of the MAGIC stellar intensity interferometer Open
In recent years, a new generation of optical intensity interferometers has emerged, leveraging the existing infrastructure of Imaging Atmospheric Cherenkov Telescopes (IACTs). The MAGIC telescopes host the MAGIC-SII system (Stellar Intensi…
View article: The variability patterns of the TeV blazar PG 1553 + 113 from a decade of MAGIC and multiband observations
The variability patterns of the TeV blazar PG 1553 + 113 from a decade of MAGIC and multiband observations Open
PG 1553 + 113 is one of the few blazars with a convincing quasi-periodic emission in the gamma-ray band. The source is also a very high energy (VHE; >100 GeV) gamma-ray emitter. To better understand its properties and identify the under…
View article: Insights into the broadband emission of the TeV blazar Mrk 501 during the first X-ray polarization measurements
Insights into the broadband emission of the TeV blazar Mrk 501 during the first X-ray polarization measurements Open
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 the Imaging X-ray Polarimetry Explorer (IXPE). Methods. We used radi…
View article: First characterization of the emission behavior of Mrk 421 from radio to very high-energy gamma rays with simultaneous X-ray polarization measurements
First characterization of the emission behavior of Mrk 421 from radio to very high-energy gamma rays with simultaneous X-ray polarization measurements Open
Aims. We have performed the first broadband study of Mrk 421 from radio to TeV gamma rays with simultaneous measurements of the X-ray polarization from IXPE. Methods. The data were collected as part of an extensive multiwavelength campaign…
View article: Insights into the broad-band emission of the TeV blazar Mrk 501 during the first X-ray polarization measurements
Insights into the broad-band emission of the TeV blazar Mrk 501 during the first X-ray polarization measurements Open
We present the first multi-wavelength study of Mrk 501 including very-high-energy (VHE) gamma-ray observations simultaneous to X-ray polarization measurements from the Imaging X-ray Polarimetry Explorer (IXPE). We use radio-to-VHE data fro…
View article: Constraints on axion-like particles with the Perseus Galaxy Cluster with MAGIC
Constraints on axion-like particles with the Perseus Galaxy Cluster with MAGIC Open
Axion-like particles (ALPs) are pseudo-Nambu-Goldstone bosons that emerge in various theories beyond the standard model. These particles can interact with high-energy photons in external magnetic fields, influencing the observed gamma-ray …
View article: First characterization of the emission behavior of Mrk421 from radio to VHE gamma rays with simultaneous X-ray polarization measurements
First characterization of the emission behavior of Mrk421 from radio to VHE gamma rays with simultaneous X-ray polarization measurements Open
We perform the first broadband study of Mrk421 from radio to TeV gamma rays with simultaneous measurements of the X-ray polarization from IXPE. The data were collected within an extensive multiwavelength campaign organized between May and …
View article: MAGIC detection of GRB 201216C at<i>z</i> = 1.1
MAGIC detection of GRB 201216C at<i>z</i> = 1.1 Open
Gamma-ray bursts (GRBs) are explosive transient events occurring at cosmological distances, releasing a large amount of energy as electromagnetic radiation over several energy bands. We report the detection of the long GRB 201216C by the M…
View article: Multi-year characterisation of the broad-band emission from the intermittent extreme BL Lac 1ES 2344+514
Multi-year characterisation of the broad-band emission from the intermittent extreme BL Lac 1ES 2344+514 Open
Aims. The BL Lac 1ES 2344 +514 is known for temporary extreme properties characterised by a shift of the synchrotron spectral energy distribution (SED) peak energy nu(synch.p) above 1 keV. While those extreme states have only been observed…
View article: Constraints to axion-like particles with the Perseus Galaxy Cluster with MAGIC
Constraints to axion-like particles with the Perseus Galaxy Cluster with MAGIC Open
Axion-like particles (ALPs) are pseudo-Nambu-Goldston bosons that appear in theories beyond the standard model and are capable of converting to photons in the presence of magnetic fields. Such interaction can have an observable effect on t…
View article: New constraints on Lorentz invariance violation using the extraordinary flare of Mrk 421 in 2014
New constraints on Lorentz invariance violation using the extraordinary flare of Mrk 421 in 2014 Open
An extraordinary flare from blazar Mrk 421 was recorded on the night of April 24, 2014, by the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes at very high energy (VHE) from 100 GeV up to 10 TeV. Several quantum-gravity models…
View article: Update on the performance of the MAGIC Intensity Interferometer
Update on the performance of the MAGIC Intensity Interferometer Open
In recent years, the MAGIC telescopes have been equipped with a setup that allows its Imaging Atmospheric Cherenkov Telescopes (IACTs) to function as an Intensity Interferometer. The deadtime-free setup includes a 4-channel GPU-based real-…