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Galactic Radio Explorer: an all-sky monitor for bright radio bursts

Connor, Liam and Shila, Kiran A. and Kulkarni, Shrinivas R. and Flygare, Jonas and Hallinan, Gregg and Li, Dongzi and Lu, Wenbin and Ravi, Vikram and Weinreb, Sander (2021) Galactic Radio Explorer: an all-sky monitor for bright radio bursts. . (Unpublished)

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We present the Galactic Radio Explorer (GReX), an all-sky monitor to probe the brightest bursts in the radio sky. Building on the success of STARE2, we will search for fast radio bursts (FRBs) emitted from Galactic magnetars as well as bursts from nearby galaxies. GReX will search down to ~ten microseconds time resolution, allowing us to find new super giant radio pulses from Milky Way pulsars and study their broadband emission. The proposed instrument will employ ultra-wide band (0.7--2 GHz) feeds coupled to a high performance (receiver temperature <10 K) low noise amplifier (LNA) originally developed for the DSA-110 and DSA-2000 projects. In GReX Phase I (GReX-I), unit systems will be deployed at Owens Valley Radio Observatory (OVRO), NASA's Goldstone station, and at Telescope Array, Delta Utah. Phase II will expand the array, placing feeds in India, Australia, and elsewhere in order to build up to continuous coverage of nearly 4π steradians and to increase our exposure to the Galactic plane. We model the local magnetar population to forecast for GReX, finding the improved sensitivity and increased exposure to the Galactic plane could lead to dozens of FRB-like bursts per year.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Connor, Liam0000-0002-7587-6352
Kulkarni, Shrinivas R.0000-0001-5390-8563
Flygare, Jonas0000-0002-0204-2891
Hallinan, Gregg0000-0002-7083-4049
Li, Dongzi0000-0001-7931-0607
Lu, Wenbin0000-0002-1568-7461
Ravi, Vikram0000-0002-7252-5485
Weinreb, Sander0000-0002-9353-6204
Additional Information:Attribution 4.0 International (CC BY 4.0). We thank Dale Gary and Dan Werthimer for helpful discussions.
Group:Astronomy Department
Subject Keywords:fast radio bursts, pulsars, instrumentation
Record Number:CaltechAUTHORS:20210202-095231043
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107856
Deposited By: George Porter
Deposited On:03 Feb 2021 22:56
Last Modified:03 Feb 2021 22:56

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