Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Chamma, Mohammed A."'
Autor:
Sheikh, Sofia Z., Farah, Wael, Pollak, Alexander W., Andrew, V., P., Siemion, Chamma, Mohammed A., Cruz, Luigi F., Davis, Roy H., DeBoer, David R., Gajjar, Vishal, Karn, Phil, Kittling, Jamar, Lu, Wenbin, Masters, Mark, Premnath, Pranav, Schoultz, Sarah, Shumaker, Carol, Singh, Gurmehar, Snodgrass, Michael
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 hours of follow-up observations of this source using the recently refurbis
Externí odkaz:
http://arxiv.org/abs/2312.07756
Autor:
Brown, Katie, Chamma, Mohammed A., Rajabi, Fereshteh, Kumar, Aishwarya, Rajabi, Hosein, Houde, Martin
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 sub-bursts and 31 multi-component bursts from 11 data sets, with centre
Externí odkaz:
http://arxiv.org/abs/2308.11729
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 20121102A spanning frequencies 1--7.5GHz, durations of less than 1 ms
Externí odkaz:
http://arxiv.org/abs/2210.00106
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 bandwidth greatly exceeding that of the transient process itself. We
Externí odkaz:
http://arxiv.org/abs/2208.01523
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 show that the effect of ARS on the radiation field can lead to not on
Externí odkaz:
http://arxiv.org/abs/2112.15104
Autor:
Chamma, Mohammed A., Rajabi, Fereshteh, Wyenberg, Christopher M., Mathews, Abhilash, Houde, Martin
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 earlier analysis on FRB 20121102A. The relationship between the frequency dr
Externí odkaz:
http://arxiv.org/abs/2010.14041
Autor:
Rajabi, Fereshteh, Chamma, Mohammed A., Wyenberg, Christopher M., Mathews, Abhilash, Houde, Martin
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 account for the downward frequency drift in a sequence of sub-bursts of
Externí odkaz:
http://arxiv.org/abs/2008.02395
Publikováno v:
MNRAS, Volume 480, Issue 3, 1 November 2018, Pages 3123--3131
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 of circular polarization in common molecular tracers, most notably CO.
Externí odkaz:
http://arxiv.org/abs/1808.00211
Autor:
Brown, Katie, Chamma, Mohammed A, Rajabi, Fereshteh, Kumar, Aishwarya, Rajabi, Hosein, Houde, Martin
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters; Mar2024, Vol. 529 Issue 1, pL152-L158, 7p
Autor:
Sheikh, Sofia Z, Farah, Wael, Pollak, Alexander W, Siemion, Andrew P V, Chamma, Mohammed A, Cruz, Luigi F, Davis, Roy H, DeBoer, David R, Gajjar, Vishal, Karn, Phil, Kittling, Jamar, Lu, Wenbin, Masters, Mark, Premnath, Pranav, Schoultz, Sarah, Shumaker, Carol, Singh, Gurmehar, Snodgrass, Michael
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Feb2024, Vol. 527 Issue 4, p10425-10439, 15p