ASTRI Mini-Array Glossary

The ASTRI Mini-Array (MA) is an INAF ground-based project to construct, deploy and operate a set of nine identical dual-mirror Cherenkov gamma-ray telescopes, and several other auxiliary equipment and infrastructures. The ASTRI Mini-Array scientific objective is to exploit the imaging atmospheric Cherenkov technique to measure the energy, direction and arrival time of gamma-ray photons arriving at the Earth from astrophysical sources. This document lists acronyms and the glossary of the projec

Agilepy: A Python framework for AGILE data

The Italian AGILE space mission, with its Gamma-Ray Imaging Detector (GRID) instrument sensitive in the 30 Me–50 GeV γray energy band, has been operating since 2007. Agilepy is an open-source Python package to analyse AGILE/GRID data. The package is built on top of the command-line version of the AGILE Science Tools, developed by the AGILE Team, publicly available and released by ASI/SSDC. The primary purpose of the package is to provide an easy to use high-level interface to analyse AGILE/GRID data by simplifying the configuration of the tasks and ensuring straightforward access to the data. The current features are the generation and display of sky maps and light curves, the access to \gray sources catalogues, the analysis to perform spectral model and position fitting, the wavelet analysis. Agilepy also includes an interface tool providing the time evolution of the AGILE off-axis viewing angle for a chosen sky region. The Flare Advocate team also uses the tool to analyse the data during the daily monitoring of the γray sky. Agilepy (and its dependencies) can be easily installed using Anaconda

The AGILE real-time analysis software system to detect short-transient events in the multi-messenger era

AGILE is a space mission launched in 2007 to study X-ray and gamma-ray phenomena through data acquired by different instruments on board the satellite. In the multi-messenger era, the fast detection of transient sources is one of the main goals of space and ground-based gamma-ray observatories. When an observatory detects a transient event, it usually sends science alerts to other facilities through networks such as the General Coordinates Network (GCN), enabling follow-up observations. To achieve this task, real-time analysis (RTA) pipelines are required. This manuscript presents the RTA system developed for the AGILE space mission to detect transient sources on timescales from seconds to one hour. Two types of pipelines are presented. One pipeline executes automated analyses as soon as data are available, sharing the detection of sources with the community; more than 90 automated notices have been sent to the GCN since May 2019. The other pipeline reacts to external science alerts from neutrinos, gravitational waves (GW), etc., to search for electromagnetic counterparts in the AGILE data. The AGILE Team can visualize the results of these analyses using a web platform. The pipelines hereby presented can be a starting point for the development of RTA systems of the next generation of space-based gamma-ray observatories

AGILE Observations of the LIGO-Virgo Gravitational-wave Events of the GWTC-1 Catalog

We present a comprehensive review of AGILE follow-up observations of the Gravitational Wave (GW) events and the unconfirmed marginal triggers reported in the first LIGO-Virgo (LV) Gravitational Wave Transient Catalog (GWTC-1). For seven GW events and 13 LV triggers, the associated 90% credible region was partially or fully accessible to the AGILE satellite at the T 0; for the remaining events, the localization region was not accessible to AGILE due to passages into the South Atlantic Anomaly, or complete Earth occultations (as in the case of GW170817). A systematic search for associated transients, performed on different timescales and on different time intervals about each event, led to the detection of no gamma-ray counterparts. We report AGILE MCAL upper limit fluences in the 400 keV-100 MeV energy range, evaluated in a time window of T 0 ± 50 s around each event, as well as AGILE GRID upper limit (UL) fluxes in the 30 MeV-50 GeV energy range, evaluated in a time frame of T 0 ± 950 s around each event. All ULs are estimated at different integration times and are evaluated within the portions of GW credible region accessible to AGILE at the different times under consideration. We also discuss the possibility of AGILE MCAL to trigger and detect a weak soft-spectrum burst such as GRB 170817A