The Large Array Survey Telescope—Science Goals

S. Ben-Ami*, E. O. Ofek, D. Polishook, A. Franckowiak, N. Hallakoun, E. Segre, Y. Shvartzvald, N. L. Strotjohann, O. Yaron, O. Aharonson, I. Arcavi, D. Berge, V. Fallah Ramazani, A. Gal-Yam, S. Garrappa, O. Hershko, G. Nir, S. Ohm, K. Rybicki, I. SadehN. Segev, Y. M. Shani, Y. Sofer-Rimalt, S. Weimann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The Large Array Survey Telescope (LAST) is designed to survey the variable and transient sky at high temporal cadence. The array is comprised of 48 F/2.2 telescopes of 27.9 cm aperture, coupled to full-frame backside-illuminated cooled CMOS detectors with 3.76 μm pixels, resulting in a pixel scale of 1.″25. A single telescope with a field of view of 7.4 deg2 reaches a 5σ limiting magnitude of 19.6 in 20 s. LAST 48 telescopes are mounted on 12 independent mounts—a modular design which allows us to conduct optimized parallel surveys. Here we provide a detailed overview of the LAST survey strategy and its key scientific goals. These include the search for gravitational-wave (GW) electromagnetic counterparts with a system that can cover the uncertainty regions of the next-generation GW detectors in a single exposure, the study of planetary systems around white dwarfs, and the search for near-Earth objects. LAST is currently being commissioned, with full scientific operations expected in mid 2023. This paper is accompanied by two complementary publications in this issue, giving an overview of the system and of the dedicated data reduction pipeline.

Original languageEnglish
Article number085002
JournalPublications of the Astronomical Society of the Pacific
Volume135
Issue number1050
DOIs
Publication statusPublished - 1 Aug 2023

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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