Gamma Ray Bursts from the early Universe: predictions for present-day and future instruments
arXiv:0710.4280 · doi:10.1111/j.1365-2966.2008.12624.x
Abstract
Long Gamma Ray Bursts (GRBs) constitute an important tool to study the Universe near and beyond the epoch of reionization. We delineate here the characteristics of an 'ideal' instrument for the search of GRBs at z>6-10. We find that the detection of these objects requires soft band detectors with a high sensitivity and moderately large FOV. In the light of these results, we compare available and planned GRB missions, deriving conservative predictions on the number of high-z GRBs detectable by these instruments along with the maximum accessible redshift. We show that the Swift satellite will be able to detect various GRBs at z>6, and likely at z>10 if the trigger threshold is decreased by a factor of ~2. Furthermore, we find that INTEGRAL and GLAST are not the best tool to detect bursts at z>6: the former being limited by the small FOV, and the latter by its hard energy band and relatively low sensitivity. Finally, future missions (SVOM, EDGE, but in particular EXIST) will provide a good sample of GRBs at z>6 in a few years of operation.
6 pages, 2 figures, MNRAS in press
References in corpus (6)
- The Gamma Ray Burst Luminosity Function in the Light of the Swift 2-year Data
- A metal rich molecular cloud surrounds GRB 050904 at redshift 6.3
- Selection effects shaping the Gamma Ray Burst redshift distributions
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Cited by in corpus (8)
- Sciences with the 2.5-meter Wide Field Survey Telescope (WFST)
- Science objectives of the Einstein Probe mission
- Accessing the population of high redshift Gamma Ray Bursts
- Testing Reionization with Gamma Ray Burst Absorption Spectra
- Population synthesis of gamma-ray bursts with precursor activity and the spinar paradigm
- Probing the low-luminosity GRB population with new generation satellite detectors
- The LOFT Burst Alert System and its Burst On-board Trigger
- The Luminosity Function of Long Gamma-Ray Bursts and their rate at z>6