R. Martone
A5003167531- Gamma-ray bursts and supernovae
- SAS software applications and methods
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
- Pulsars and Gravitational Waves Research
- Astrophysics and Cosmic Phenomena
- Stellar, planetary, and galactic studies
- Astro and Planetary Science
- Astronomy and Astrophysical Research
- Solar and Space Plasma Dynamics
- Spacecraft and Cryogenic Technologies
- Geophysics and Gravity Measurements
- Optical and Acousto-Optic Technologies
- Nuclear Physics and Applications
University of Ferrara
2017-2023
International Center for Relativistic Astrophysics
2019-2020
University of Naples Federico II
2017
Abstract We report multicolor optical imaging and polarimetry observations of the afterglow first TeV-detected gamma-ray burst (GRB), GRB 190114C, using RINGO3 MASTER II polarimeters. Observations begin 31 s after onset continue until ∼7000 postburst. The light curves reveal a chromatic break at ∼400–500 s, with initial temporal decay α = 1.669 ± 0.013 flattening to ∼ 1 postbreak, which we model as combination reverse forward shock components magnetization parameter R B 70. observed...
Context . Gamma-ray bursts (GRBs) are ideal probes of the Universe at high redshift (ɀ), pinpointing locations earliest star-forming galaxies and providing bright backlights with simple featureless power-law spectra that can be used to spectrally fingerprint intergalactic medium host galaxy during period reionization. Future missions such as Gamow Explorer (hereafter Gamow) being proposed unlock this potential by increasing rate identification high-ɀ (ɀ > 5) GRBs in order rapidly trigger...
No robust detection of prompt electromagnetic counterparts to fast radio bursts (FRBs) has yet been obtained, in spite several multi-wavelength searches carried out so far. Specifically, X/gamma-ray are predicted by some models. We planned on searching for gamma-ray the Insight-Hard X-ray Modulation Telescope (Insight-HXMT) data, taking advantage unique combination large effective area keV-MeV energy range and sub-ms time resolution. selected 39 FRBs that were promptly visible from...
Long gamma-ray bursts are produced during the dramatic deaths of massive stars with very short lifetimes, meaning that they explode close to birth place their progenitors. During a period become most luminous objects observable in Universe, being perfect beacons study high-redshift star-forming regions. To use afterglow GRB 161023A at redshift $z=2.710$ as background source environment explosion and intervening systems along its line-of-sight. r first time, we complement UV/Optical/NIR...
Context. Fast Radio Bursts (FRBs) are millisecond-long bursts uniquely detected at radio frequencies. FRB 131104 is the only case for which a $\gamma$-ray transient positionally and temporally consistent was claimed. This high-energy had duration of $\sim400$~s 15-150~keV fluence $S_{\gamma}\sim4\times10^{-6}$ erg $\mathrm{cm}^{-2}$. However, association with still debated. Aims. We aim testing systematic presence an associated counterpart throughout sample population. Methods. used approach...
No transient electromagnetic emission has yet been found in association to fast radio bursts (FRBs), the only possible exception (3sigma confidence) being putative gamma-ray signal detected Swift/BAT data energy band 15-150 keV at time and position of FRB131104. Systematic searches for hard X/gamma-ray counterparts other FRBs ended up with just lower limits on radio/gamma-ray fluence ratios. In 2001, earliest discovered FRBs, BeppoSAX Gamma-Ray Burst Monitor (GRBM) was one most sensitive...
Abstract The coming decades will establish the exploration of gravitational wave (GW) Universe over a broad frequency range by ground and space interferometers. Meanwhile, wide-field, high-cadence sensitive surveys span electromagnetic spectrum from radio all way up to TeV, as well high-energy neutrino window. Among numerous classes transients, γ –ray bursts (GRBs) have direct links with most hot topics that be addressed, such strong gravity regime, relativistic shocks, particle acceleration...
Context. In the context of an in-depth understanding GRBs and their possible use in cosmology, some important correlations between parameters that describe emission have been discovered, among which "Ep,i-Eiso" correlation is most studied. Because this, it fundamental to shed light on peculiar behaviour a few events, namely GRB 980425 031203, appear be outliers Ep,i-Eiso correlation. Aims. this paper we investigate if locations two (apparent) correlation, may due observational bias caused by...
Abstract Broad-line type Ic Supernovae (BL-Ic SNe) are characterized by high ejecta velocity (≳10 4 km s −1 ) and sometimes associated with the relativistic jets typical of long duration (≳2 s) Gamma-Ray Bursts. The reason why a small fraction BL-Ic SNe harbor is not known. Here we present deep X-ray radio observations SN 2014ad extending from 13 to 930 days post explosion. was detected at either frequency has no observational evidence GRB counterpart. proximity ( d ∼ 26 Mpc) enables very...