Transient detection capabilities of small satellite gamma‐ray detectors

Abstract

The new, small satellite-based gamma-ray detectors, like Cubesats Applied for MEasuring and Localizing Transients, will provide a new way to detect gamma transients in the multimessenger era. The efficiency and the detection capabilities of such a system will be compared with current missions, for example, Fermi Gamma-ray Burst Monitor (GBM). We used the Fermi GBM's observed short gamma-ray burst light curves aggregated from observed discrete detector event for the simulation input. The corresponding direction-dependent detector response matrices were used to generate photon counts and light curves around a simulated event, enabling to determine the statistics. This method can be used in the future for trigger algorithm and detector system development, and also to estimate the efficiency of the data analysis pipeline regarding the observable gamma-ray bursts' parameters as well as other electromagnetic transients. K E Y W O R D gamma rays: observations -instrumentation: detectors -space vehicles: instrumentsThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

Simulations of expected signal and background of gamma-ray sources by large field-of-view detectors aboard CubeSats

“…The main scientific objective of the proposed CAMELOT satellites is the detection of GRBs. 13,14 Short GRBs (sGRBs) originate from a merger of two neutron stars and possibly also from a merger of a neutron star and a black hole. [15][16][17][18] The typical duration T 90 (the time during which the cumulative counts increase from 5 % to 95 %) of their prompt gamma-ray emission is 2 s in the observer frame 19 and their gamma-ray energy flux peaks at ∼ 600 keV.…”

Estimating GRBs' cosmological distances

“…The highest spectroscopic redshift GRB was published by Tanvir et al (2009), that time it was the the most distant object in the Universe (Bagoly et al, 2019). We think that the GRB redshift distribution extending at least to z ≈ 10 and their association with explosive death of massive stars (therefore the GRBs) can be unique and powerful tool for cosmology (Tanvir et al, 2021).…”