Limits on the Event Rates of Fast Radio Transients from the V-FASTR
We present the first results from the V-FASTR experiment, a commensal search for fast transient radio bursts using the Very Long Baseline Array (VLBA). V-FASTR is unique in that the widely spaced VLBA antennas provide a discriminant against non-astronomical signals and a mechanism for the localizati...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Published: |
Institute of Physics Publishing Ltd.
2012
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/35269 |
| _version_ | 1848754450902024192 |
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| author | Wayth, Randall Tingay, Steven Deller, A Brisken, Walter Thompson, David Wagstaff, K Majid, Walid |
| author_facet | Wayth, Randall Tingay, Steven Deller, A Brisken, Walter Thompson, David Wagstaff, K Majid, Walid |
| author_sort | Wayth, Randall |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We present the first results from the V-FASTR experiment, a commensal search for fast transient radio bursts using the Very Long Baseline Array (VLBA). V-FASTR is unique in that the widely spaced VLBA antennas provide a discriminant against non-astronomical signals and a mechanism for the localization and identification of events that is not possible with single dishes or short baseline interferometers. Thus, far V-FASTR has accumulated over 1300 hr of observation time with the VLBA, between 90 cm and 3 mm wavelength (327 MHz-86 GHz), providing the first limits on fast transient event rates at high radio frequencies (> 1.4 GHz). V-FASTR has blindly detected bright individual pulses from seven known pulsars but has not detected any single-pulse events that would indicate high-redshift impulsive bursts of radio emission. At 1.4 GHz, V-FASTR puts limits on fast transient event rates comparable with the PALFA survey at the Arecibo telescope, but generally at lower sensitivities, and comparable to the "fly's eye" survey at the Allen Telescope Array, but with less sky coverage. We also illustrate the likely performance of the Phase 1 SKA dish array for an incoherent fast transient search fashioned on V-FASTR |
| first_indexed | 2025-11-14T08:40:37Z |
| format | Journal Article |
| id | curtin-20.500.11937-35269 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:40:37Z |
| publishDate | 2012 |
| publisher | Institute of Physics Publishing Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-352692023-02-22T06:24:24Z Limits on the Event Rates of Fast Radio Transients from the V-FASTR Wayth, Randall Tingay, Steven Deller, A Brisken, Walter Thompson, David Wagstaff, K Majid, Walid methods radio continuum observational pulsars general We present the first results from the V-FASTR experiment, a commensal search for fast transient radio bursts using the Very Long Baseline Array (VLBA). V-FASTR is unique in that the widely spaced VLBA antennas provide a discriminant against non-astronomical signals and a mechanism for the localization and identification of events that is not possible with single dishes or short baseline interferometers. Thus, far V-FASTR has accumulated over 1300 hr of observation time with the VLBA, between 90 cm and 3 mm wavelength (327 MHz-86 GHz), providing the first limits on fast transient event rates at high radio frequencies (> 1.4 GHz). V-FASTR has blindly detected bright individual pulses from seven known pulsars but has not detected any single-pulse events that would indicate high-redshift impulsive bursts of radio emission. At 1.4 GHz, V-FASTR puts limits on fast transient event rates comparable with the PALFA survey at the Arecibo telescope, but generally at lower sensitivities, and comparable to the "fly's eye" survey at the Allen Telescope Array, but with less sky coverage. We also illustrate the likely performance of the Phase 1 SKA dish array for an incoherent fast transient search fashioned on V-FASTR 2012 Journal Article http://hdl.handle.net/20.500.11937/35269 10.1088/2041-8205/753/2/L36 Institute of Physics Publishing Ltd. unknown |
| spellingShingle | methods radio continuum observational pulsars general Wayth, Randall Tingay, Steven Deller, A Brisken, Walter Thompson, David Wagstaff, K Majid, Walid Limits on the Event Rates of Fast Radio Transients from the V-FASTR |
| title | Limits on the Event Rates of Fast Radio Transients from the V-FASTR |
| title_full | Limits on the Event Rates of Fast Radio Transients from the V-FASTR |
| title_fullStr | Limits on the Event Rates of Fast Radio Transients from the V-FASTR |
| title_full_unstemmed | Limits on the Event Rates of Fast Radio Transients from the V-FASTR |
| title_short | Limits on the Event Rates of Fast Radio Transients from the V-FASTR |
| title_sort | limits on the event rates of fast radio transients from the v-fastr |
| topic | methods radio continuum observational pulsars general |
| url | http://hdl.handle.net/20.500.11937/35269 |