Fast Radio Transient searches with UTMOST at 843 MHz

Abstract

We report the first radio interferometric search at 843 MHz for fast transients, particularly Fast Radio Bursts (FRBs). The recently recommissioned Swinburne University of Technology's digital backend for the Molonglo Observatory Synthesis Telescope array (the UTMOST) with its large collecting area (18,000 ${\mathrm{m}}^2$) and wide instantaneous field of view (7.80 $\mathrm{de}{\mathrm{g}}^2$) is expected to be an efficient tool to detect FRBs. As an interferometer it will be capable of discerning whether the FRBs are truly a celestial population. We show that UTMOST at full design sensitivity can detect an event approximately every few days. We report on 2 preliminary FRB surveys at about 7% and 14% respectively of the array's final sensitivity. Several pulsars have been detected via single pulses and no FRBs were discovered with pulse widths ($W$), in the range 655.36 $\mu$s $<W<41.9$ ms and dispersion measures (DMs) in the range $100<$DM$<2000$ $\mathrm{pc}\mathrm{c}{\mathrm{m}}^{-3}$. This non-detection sets a 2$\sigma$ upper limit of the sky rate of not more than 1000 events $\mathrm{sk}{\mathrm{y}}^{-1}$ $\mathrm{da}{\mathrm{y}}^{-1}$ at 843 MHz down to a flux limit of 11 Jy for 1 ms FRBs. We show that this limit is consistent with previous survey limits at 1.4 GHz and 145 MHz and set a lower limit on the mean spectral index of FRBs of $\alpha >-3.2$.

9 pages, 4 figures, 1 table

References in corpus (9)

• A bright millisecond radio burst of extragalactic origin
• Fast Radio Burst Discovered in the Arecibo Pulsar ALFA Survey
• Dense magnetized plasma associated with a fast radio burst
• Five new Fast Radio Bursts from the HTRU high latitude survey: first evidence for two-component bursts
• Fast radio bursts: search sensitivities and completeness
• A fast radio burst in the direction of the Carina dwarf spheroidal galaxy
• The Galactic Position Dependence of Fast Radio Bursts and the Discovery of FRB 011025
• The LOFAR Pilot Surveys for Pulsars and Fast Radio Transients
• Dark Matter-induced Collapse of Neutron Stars: A Possible Link Between Fast Radio Bursts and the Missing Pulsar Problem

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