207 citations · 1.4k across the 39 of their papers we have counts for
38 papers
X-ray spectra, light-curves and SEDs of blazars frequently observed by Swift
P. Giommi, M. Perri, M. Capalbi +19
Blazars research is one of the hot topics of contemporary extra-galactic astrophysics. That is because these sources are the most abundant type of extra-galactic gamma-ray sources…
Study of Blazar activity in 10 year Fermi-LAT data and implications for TeV neutrino expectations
J. R. Sacahui, A. V. Penacchioni, A. Marinelli +4
Blazars are the most active extragalactic gamma-ray sources. They show sporadic bursts of activity, lasting from hours to months. In this work we present a 10-year analysis of a sa…
The Open Universe survey of Swift-XRT GRB fields: a complete sample of HBL blazars
P. Giommi, Y. L. Chang, S. Turriziani +22
We have analysed all the X-ray images centred on Gamma Ray Bursts generated by Swift over the last 15 years using automatic tools that do not require any expertise in X-ray astrono…
Direct Measurement of the Cosmic-Ray Proton Spectrum from 50 GeV to 10 TeV with the Calorimetric Electron Telescope on the International Space Station
O. Adriani, Y. Akaike, K. Asano +86
In this paper, we present the analysis and results of a direct measurement of the cosmic-ray proton spectrum with the CALET instrument onboard the International Space Station, incl…
Time-delay between neutrinos and gamma-rays in short GRBs
A. V. Penacchioni, O. Civitarese
In this work we make an estimate of the time-delay between signals, recorded at detectors on Earth, of neutrinos and photons originated in a short gamma-ray burst. We describe the…
Neutrino oscillations and decoherence in short-GRB progenitors
A. V. Penacchioni, O. Civitarese
Neutrinos are produced in cosmic accelerators, like active galactic nuclei (AGNs), blazars, supernova (SN) remnants and gamma-ray bursts (GRBs). On their way to the Earth they expe…
Extragalactic neutrinos as tracers of Dark Matter?
Ana V. Penacchioni, Osvaldo Civitarese
Neutrinos produced in extragalactic sources may experience flavor-oscillations and decoherence on their way to Earth due to their interaction with dark matter (DM). As a result, th…
Open Universe for Blazars: a new generation of astronomical products based on 14 years of Swift-XRT data
P. Giommi, C. H. Brandt, U. Barres de Almeida +14
Open Universe for blazars is a set of high-transparency data products for blazar science, and the tools designed to generate them. Blazar astrophysics is becoming increasingly data…
The CALorimetric Electron Telescope (CALET) on the International Space Station: Results from the First Two Years On Orbit
Y. Asaoka, O. Adriani, Y. Akaike +90
The CALorimetric Electron Telescope (CALET) is a high-energy astroparticle physics space experiment installed on the International Space Station (ISS), developed and operated by Ja…
Search for GeV Gamma-ray Counterparts of Gravitational Wave Events by CALET
O. Adriani, Y. Akaike, K. Asano +88
We present results on searches for gamma-ray counterparts of the LIGO/Virgo gravitational-wave events using CALorimetric Electron Telescope ({\sl CALET}) observations. The main ins…
Extended Measurement of the Cosmic-Ray Electron and Positron Spectrum from 11 GeV to 4.8 TeV with the Calorimetric Electron Telescope on the International Space Station
O. Adriani, Y. Akaike, K. Asano +88
Extended results on the cosmic-ray electron + positron spectrum from 11 GeV to 4.8 TeV are presented based on observations with the Calorimetric Electron Telescope (CALET) on the I…
On-orbit Operations and Offline Data Processing of CALET onboard the ISS
Y. Asaoka, S. Ozawa, S. Torii +89
The CALorimetric Electron Telescope (CALET), launched for installation on the International Space Station (ISS) in August, 2015, has been accumulating scientific data since October…
Detection of the thermal component in GRB 160107A
Yuta Kawakubo, Takanori Sakamoto, Satoshi Nakahira +14
We present the detection of a blackbody component in GRB 160107A emission by using the combined spectral data of the CALET Gamma-ray Burst Monitor (CGBM) and the MAXI Gas Slit Came…
Energy Calibration of CALET Onboard the International Space Station
Y. Asaoka, Y. Akaike, Y. Komiya +91
In August 2015, the CALorimetric Electron Telescope (CALET), designed for long exposure observations of high energy cosmic rays, docked with the International Space Station (ISS) a…
Energy Spectrum of Cosmic-ray Electron and Positron from 10 GeV to 3 TeV Observed with the Calorimetric Electron Telescope on the International Space Station
O. Adriani, Y. Akaike, K. Asano +88
First results of a cosmic-ray electron + positron spectrum, from 10 GeV to 3 TeV, is presented based upon observations with the CALET instrument on the ISS starting in October, 201…
The THESEUS space mission concept: science case, design and expected performances
L. Amati, P. O'Brien, D. Goetz +208
THESEUS is a space mission concept aimed at exploiting Gamma-Ray Bursts for investigating the early Universe and at providing a substantial advancement of multi-messenger and time-…
GRB 081024B and GRB 140402A: two additional short GRBs from binary neutron star mergers
Y. Aimuratov, R. Ruffini, M. Muccino +6
Theoretical and observational evidences have been recently gained for a two-fold classification of short bursts: 1) short gamma-ray flashes (S-GRFs), with isotropic energy $E_{iso}…
Early X-ray Flares in GRBs
R. Ruffini, Y. Wang, Y. Aimuratov +17
We analyze the early X-ray flares in the GRB "flare-plateau-afterglow" (FPA) phase observed by Swift-XRT. The FPA occurs only in one of the seven GRB subclasses: the binary-driven…
CALET Upper Limits on X-ray and Gamma-ray Counterparts of GW 151226
O. Adriani, Y. Akaike, K. Asano +89
We present upper limits in the hard X-ray and gamma-ray bands at the time of the LIGO gravitational-wave event GW 151226 derived from the CALorimetric Electron Telescope (CALET) ob…
Background and Imaging Simulations for the Hard X-Ray Camera of the MIRAX Mission
Manuel Castro, Joao Braga, Ana Penacchioni +2
We report the results of detailed Monte Carlo simulations of the performance expected both at balloon altitudes and at the probable satellite orbit of a hard X-ray coded-aperture c…
The protoMIRAX Hard X-ray Imaging Balloon Experiment
João Braga, Flavio D'Amico, Manuel A. C. Avila +6
The protoMIRAX hard X-ray imaging telescope is a balloon-borne experiment developed as a pathfinder for the MIRAX satellite mission. The experiment consists essentially in a coded-…
Probing the emission physics and weak/soft population of Gamma-Ray Bursts with LOFT
L. Amati, G. Stratta, J. -L. Atteia +36
This is a White Paper in support of the mission concept of the Large Observatory for X-ray Timing (LOFT), proposed as a medium-sized ESA mission. We discuss the potential of LOFT f…
GRB 140619B: a short GRB from a binary neutron star merger leading to black hole formation
R. Ruffini, M. Muccino, M. Kovacevic +8
We show the existence of two families of short GRBs, both originating from the merger of binary neutron stars (NSs): family-1 with erg, leading to a massive NS as…
GAME: Grb and All-sky Monitor Experiment
L. Amati, J. Braga, F. Frontera +20
We describe the GRB and All-sky Monitor Experiment (GAME) mission submitted by a large international collaboration (Italy, Germany, Czech Repubblic, Slovenia, Brazil) in response t…