36 citations · 104 across the 11 of their papers we have counts for
11 papers
High Frequency Wideband Study of FRB 20240114A with the Allen Telescope Array
Param Joshi, Vishal Gajjar, Joel Earwicker +14
We present a high-frequency, wideband observing campaign of the hyperactive repeating fast radio burst FRB 20240114A with the Allen Telescope Array. Between 27 January and 29 Octob…
Spectro-temporal analysis of ultra-fast radio bursts using per-channel arrival times
Mohammed A. Chamma, Victor Pop, Fereshteh Rajabi
Fast radio bursts (FRBs), especially those from repeating sources, exhibit a rich variety of morphologies in their dynamic spectra (or waterfalls). Characterizing these morphologie…
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…
Validating the Sub-Burst Slope Law: A Comprehensive Multi-Source Spectro-Temporal Analysis of Repeating Fast Radio Bursts
Katie Brown, Mohammed A. Chamma, Fereshteh Rajabi +3
We conduct a comprehensive spectro-temporal analysis of repeating Fast Radio Bursts (FRBs) utilizing nine distinct sources, the largest sample to date. Our data set includes 175 su…
A broad survey of spectro-temporal properties from FRB 20121102A
Mohammed A. Chamma, Fereshteh Rajabi, Aishwarya Kumar +1
We survey the spectro-temporal properties of fast radio bursts from FRB 20121102A observed by earlier studies across a wide range of frequencies. We investigate 167 bursts from FRB…
Transient Structure in the Non-linear Superradiance Regime of Widely Doppler Broadened Media
Christopher Wyenberg, Fereshteh Rajabi, Mohammed Chamma +2
We investigate transient radiation processes in the non-linear superradiance (SR) regime of the Doppler broadened Maxwell-Bloch equations when the velocity distribution is of total…
The generation and transformation of polarisation signals in molecular lines through collective anisotropic resonant scattering
Martin Houde, Boy Lankhaar, Fereshteh Rajabi +1
We discuss the existence of elliptical polarisation in rotational spectral lines of CO and other molecules within the context of the Anisotropic Resonant Scattering (ARS) model. We…
Generalisation of the Menegozzi & Lamb Maser Algorithm to the Transient Superradiance Regime
C. M. Wyenberg, B. Lankhaar, F. Rajabi +2
We investigate the application of the conventional quasi-steady state maser modelling algorithm of Menegozzi & Lamb (ML) to the high field transient regime of the one-dimensional M…
Evidence of a shared spectro-temporal law between sources of repeating fast radio bursts
Mohammed A. Chamma, Fereshteh Rajabi, Christopher M. Wyenberg +2
We study the spectro-temporal characteristics of two repeating fast radio bursts (FRBs), namely, FRB 20180916B and FRB 20180814A, and combine the results with those from our earlie…
A simple relationship for the spectro-temporal structure of bursts from FRB 121102
Fereshteh Rajabi, Mohammed A. Chamma, Christopher M. Wyenberg +2
We consider a simple dynamical and relativistic model to explain the spectro-temporal structure often displayed by repeating fast radio bursts (FRBs). We show how this model can ac…
Non-Zeeman Circular Polarization of Molecular Spectral Lines in the ISM
Mohammed Chamma, Martin Houde, Josep Miquel Girart +1
Accurately measuring the magnetic field in the ISM is essential for understanding star-formation processes. We searched archival data of the Submillimeter Array (SMA) for evidence…