417 citations · 2.8k across the 104 of their papers we have counts for
20 papers · 1 filter
On the Deepest Search for Galactic Center Pulsars and an Examination of an Intriguing Millisecond Pulsar Candidate
Karen I. Perez, Vishal Gajjar, Slavko Bogdanov +6
We report results of one of the most sensitive pulsar surveys to date targeting the innermost region of the Galactic Center (GC) using the Robert C. Byrd Green Bank Telescope (GBT)…
The First High Frequency Technosignature Search Survey with the Sardinia Radio Telescope
Lorenzo Manunza, Alice Vendrame, Luca Pizzuto +30
The quest for radio signals from technologically-advanced extraterrestrial intelligence has traditionally concentrated on the vicinity of 1.4 GHz. In this paper, we extend the sear…
Characterization of the Repeating FRB 20220912A with the Allen Telescope Array
Sofia Z. Sheikh, Wael Farah, Alexander W. Pollak +17
FRB 20220912A is a repeating Fast Radio Burst (FRB) that was discovered in Fall 2022 and remained highly active for several months. We report the detection of 35 FRBs from 541 hour…
Searching for broadband pulsed beacons from 1883 stars using neural networks
Vishal Gajjar, Dominic LeDuc, Jiani Chen +19
The search for extraterrestrial intelligence at radio frequencies has largely been focused on continuous-wave narrowband signals. We demonstrate that broadband pulsed beacons are e…
4-8 GHz Fourier-domain Searches for Galactic Center Pulsars
Akshay Suresh, James M. Cordes, Shami Chatterjee +6
The Galactic Center (GC), with its high density of massive stars, is a promising target for radio transient searches. In particular, the discovery and timing of a pulsar orbiting t…
Multiband Detection of Repeating FRB 20180916B
Ketan R. Sand, Jakob Faber, Vishal Gajjar +19
We present a multiband study of FRB 20180916B, a repeating source with a 16.3 day periodicity. We report the detection of 4, 1 and 7 bursts from observations spanning 3 days using…
Spectro-temporal Emission from the Galactic Center Magnetar
Akshay Suresh, James M. Cordes, Shami Chatterjee +4
Radio magnetars are exotic sources noted for their diverse spectro-temporal phenomenology and pulse profile variations over weeks to months. Unusual for radio magnetars, the Galact…
Absence of bursts between 4-8 GHz from FRB20200120E located in an M81 Globular Cluster
Vishal Gajjar, Daniele Michilli, Jakob T. Faber +6
We report the non-detection of dispersed bursts between 4 - 8 GHz from 2.5 hours of observations of FRB20200120E at 6 GHz using the Robert C. Byrd Green Bank Telescope. Our fluence…
The Breakthrough Listen Search For Intelligent Life Near the Galactic Center I
Vishal Gajjar, Karen I. Perez, Andrew P. V. Siemion +23
A line-of-sight towards the Galactic Center (GC) offers the largest number of potentially habitable systems of any direction in the sky. The Breakthrough Listen program is undertak…
Re-Analysis of Breakthrough Listen Observations of FRB 121102: Polarization Properties of Eight New Spectrally Narrow Bursts
Jakob T. Faber, Vishal Gajjar, Andrew P. V. Siemion +15
We report polarization properties for eight narrowband bursts from FRB 121102 that have been re-detected in a high-frequency (4-8 GHz) Breakthrough Listen observation with the Gree…
A Fast Radio Burst with frequency-dependent polarization detected during Breakthrough Listen observations
D. C. Price, G. Foster, M. Geyer +30
Here, we report on the detection and verification of Fast Radio Burst FRB 180301, which occurred on UTC 2018 March 1 during the Breakthrough Listen observations with the Parkes tel…
Fast Radio Burst 121102 Pulse Detection and Periodicity: A Machine Learning Approach
Yunfan Gerry Zhang, Vishal Gajjar, Griffin Foster +4
We report the detection of 72 new pulses from the repeating fast radio burst FRB 121102 in Breakthrough Listen C-band (4-8 GHz) observations at the Green Bank Telescope. The new pu…
Detection of Bursts from FRB 121102 with the Effelsberg 100-m Radio Telescope at 5 GHz and the Role of Scintillation
Laura G Spitler, W Herrmann, Geoffrey C Bower +8
FRB 121102, the only repeating fast radio burst (FRB) known to date, was discovered at 1.4 GHz and shortly after the discovery of its repeating nature, detected up to 2.4 GHz. Here…
Highest-frequency detection of FRB 121102 at 4-8 GHz using the Breakthrough Listen Digital Backend at the Green Bank Telescope
V. Gajjar, A. P. V. Siemion, D. C. Price +28
We report the first detections of the repeating fast radio burst source FRB 121102 above 5.2 GHz. Observations were performed using the 48 GHz receiver of the Robert C. Byrd Gre…
No bursts detected from FRB121102 in two 5-hour observing campaigns with the Robert C. Byrd Green Bank Telescope
Danny C. Price, Vishal Gajjar, Lee Rosenthal +13
Here, we report non-detection of radio bursts from Fast Radio Burst FRB 121102 during two 5-hour observation sessions on the Robert C. Byrd 100-m Green Bank Telescope in West Virgi…
Initial Results from the ALFABURST Survey
Mayuresh Surnis, Griffin Foster, Golnoosh Golpayegani +13
Here, we present initial results from the ALFABURST radio transient survey, which is currently running in a commensal mode with the ALFA receiver at the Arecibo telescope. We obser…
The Repeating Fast Radio Burst FRB 121102 as Seen on Milliarcsecond Angular Scales
B. Marcote, Z. Paragi, J. W. T. Hessels +26
The millisecond-duration radio flashes known as Fast Radio Bursts (FRBs) represent an enigmatic astrophysical phenomenon. Recently, the sub-arcsecond localization (~ 100mas precisi…
A Millisecond Interferometric Search for Fast Radio Bursts with the Very Large Array
Casey J. Law, Geoffrey C. Bower, Sarah Burke-Spolaor +7
We report on the first millisecond timescale radio interferometric search for the new class of transient known as fast radio bursts (FRBs). We used the Very Large Array (VLA) for a…
The Allen Telescope Array Fly's Eye Survey for Fast Radio Transients
Andrew P. V. Siemion, Geoffrey C. Bower, Griffin Foster +6
The relatively unexplored fast radio transient parameter space is known to be home to a variety of interesting sources, including pulsars, pulsar giant pulses and non-thermal emiss…
The Allen Telescope Array Pi GHz Sky Survey I. Survey Description and Static Catalog Results for the Bootes Field
Geoffrey C. Bower, Steve Croft, Garrett Keating +50
The Pi GHz Sky Survey (PiGSS) is a key project of the Allen Telescope Array. PiGSS is a 3.1 GHz survey of radio continuum emission in the extragalactic sky with an emphasis on syno…