2018/03/31 by Long-Biao Li, Yong-Feng Huang, Jin-Jun Geng +1
Physics and Astronomy · #Astrophysical Phenomena and Observations #Collision #Event (particle physics) #Gamma-ray bursts and supernovae #Magnetic field #Maser #Plasma #Pulsars and Gravitational Waves Research #Shock wave #Sky #Synchrotron #astro-ph.HE
paper · pdf · doi:10.1088/1674-4527/18/6/61
published as Research in Astronomy and Astrophysics, 2018, 18, 61 · 8 pages, 1 figure, final version, RAA (Research in Astronomy and Astrophysics), 2018, 18, 61
openalex created_date 2018/04/06 · arxiv created 2018/05/28 · openalex publication_date 2018/06/01 · arxiv updated 2018/06/13 · openalex updated_date 2026/08/05
Abstract Fast radio bursts (FRBs) are bright radio pulses from the sky with millisecond durations and Jansky-level flux densities. Their origins are still largely uncertain. Here we suggest a new model for FRBs. We argue that the collision of a white dwarf with a black hole can generate a transient accretion disk, from which powerful episodicmagnetic blobs will be launched. The collision between two consecutive magnetic blobs can result in a catastrophic magnetic reconnection, which releases a large amount of free magnetic energy and forms a forward shock. The shock propagates through the cold magnetized plasma within the blob in the collision region, radiating through the synchrotron maser mechanism, which is responsible for a non-repeating FRB signal. Our calculations show that the theoretical energetics, radiation frequency, duration timescale and event rate can be very consistent with the observational characteristics of FRBs.