0586935 - ASÚ 2025 RIV FR eng J - Journal Article
Kann, D.A. - White, N. E. - Ghirlanda, G. - Jelínek, Martin - Thöne, Christina - Hudec, René - Štrobl, Jan … Total 61 authors
Fires in the deep: The luminosity distribution of early-time gamma-ray-burst afterglows in light of the Gamow Explorer sensitivity requirements.
Astronomy & Astrophysics. Roč. 686, June (2024), č. článku A56. ISSN 0004-6361. E-ISSN 1432-0746
Institutional support: RVO:67985815
Keywords : methods: observational * space vehicles * space vehicles: instruments * techniques: photometric * gamma-ray burst: general * dark ages * reionization * first stars
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 6.5, year: 2022
Method of publishing: Open access

Context. Gamma-ray bursts (GRBs) are ideal probes of the Universe at high redshift (z), pinpointing the locations of the earliest star-forming galaxies and providing bright backlights with simple featureless power-law spectra that can be used to spectrally fingerprint the intergalactic medium and host galaxy during the period of reionization. Future missions such as Gamow Explorer (hereafter Gamow) are being proposed to unlock this potential by increasing the rate of identification of high-z (z > 5) GRBs in order to rapidly trigger observations from 6 to 10 m ground telescopes, the James Webb Space Telescope (JWST), and the upcoming Extremely Large Telescopes (ELTs). Aims. Gamow was proposed to the NASA 2021 Medium-Class Explorer (MIDEX) program as a fast-slewing satellite featuring a wide-field lobster-eye X-ray telescope (LEXT) to detect and localize GRBs with arcminute accuracy, and a narrow-field multi-channel photo-z infrared telescope (PIRT) to measure their photometric redshifts for > 80% of the LEXT detections using the Lyman-alpha dropout technique. We use a large sample of observed GRB afterglows to derive the PIRT sensitivity requirement.
Permanent Link: https://hdl.handle.net/11104/0354903