English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We discuss the optimization of gamma-ray burst (GRB) detectors with a goal ofmaximizing the detected number of bright high-redshift GRBs, in the context ofdesign studies conducted for the X-ray transient detector on the JANUS mission.We conclude that the optimal energy band for detection of high-z GRBs is belowabout 30 keV. We considered both lobster-eye and coded aperture designsoperating in this energy band. Within the available mass and power constraints,we found that the coded aperture mask was preferred for the detection of high-zbursts with bright enough afterglows to probe galaxies in the era of the CosmicDawn. This initial conclusion was confirmed through detailed missionsimulations that found that the selected design (an X-ray Coded ApertureTelescope) would detect four times as many bright, high-z GRBs as thelobster-eye design we considered. The JANUS XCAT instrument will detect 48 GRBswith z > 5 and fluence Sx > 3 {\times} 10-7 erg cm-2 in a two year mission.

Optimizing the Search for High-z GRBs: The JANUS X-ray Coded Aperture Telescope