Emission Mechanisms of Fast Radio Bursts

Fast radio bursts (FRBs) are recently discovered mysterious single pulses of radio emission, mostly coming from cosmological distances (∼1 Gpc). Their short duration, ∼1 ms, and large luminosity demonstrate coherent emission. I review the basic physics of coherent emission mechanisms proposed for FR...

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Main Author:	Yuri Lyubarsky
Format:	Article
Language:	English
Published:	MDPI AG 2021-03-01
Series:	Universe
Subjects:	non-thermal emission mechanisms plasmas shock waves reconnection neutron stars
Online Access:	https://www.mdpi.com/2218-1997/7/3/56

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spelling	doaj-f03a15a7d7594feca50108cbfe8878512021-03-05T00:03:56ZengMDPI AGUniverse2218-19972021-03-017565610.3390/universe7030056Emission Mechanisms of Fast Radio BurstsYuri Lyubarsky0Physics Department, Ben-Gurion University, P.O. Box 653, Beer-Sheva 84105, IsraelFast radio bursts (FRBs) are recently discovered mysterious single pulses of radio emission, mostly coming from cosmological distances (∼1 Gpc). Their short duration, ∼1 ms, and large luminosity demonstrate coherent emission. I review the basic physics of coherent emission mechanisms proposed for FRBs. In particular, I discuss the curvature emission of bunches, the synchrotron maser, and the emission of radio waves by variable currents during magnetic reconnection. Special attention is paid to magnetar flares as the most promising sources of FRBs. Non-linear effects are outlined that could place bounds on the power of the outgoing radiation.https://www.mdpi.com/2218-1997/7/3/56non-thermal emission mechanismsplasmasshock wavesreconnectionneutron stars
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Yuri Lyubarsky
spellingShingle	Yuri Lyubarsky Emission Mechanisms of Fast Radio Bursts Universe non-thermal emission mechanisms plasmas shock waves reconnection neutron stars
author_facet	Yuri Lyubarsky
author_sort	Yuri Lyubarsky
title	Emission Mechanisms of Fast Radio Bursts
title_short	Emission Mechanisms of Fast Radio Bursts
title_full	Emission Mechanisms of Fast Radio Bursts
title_fullStr	Emission Mechanisms of Fast Radio Bursts
title_full_unstemmed	Emission Mechanisms of Fast Radio Bursts
title_sort	emission mechanisms of fast radio bursts
publisher	MDPI AG
series	Universe
issn	2218-1997
publishDate	2021-03-01
description	Fast radio bursts (FRBs) are recently discovered mysterious single pulses of radio emission, mostly coming from cosmological distances (∼1 Gpc). Their short duration, ∼1 ms, and large luminosity demonstrate coherent emission. I review the basic physics of coherent emission mechanisms proposed for FRBs. In particular, I discuss the curvature emission of bunches, the synchrotron maser, and the emission of radio waves by variable currents during magnetic reconnection. Special attention is paid to magnetar flares as the most promising sources of FRBs. Non-linear effects are outlined that could place bounds on the power of the outgoing radiation.
topic	non-thermal emission mechanisms plasmas shock waves reconnection neutron stars
url	https://www.mdpi.com/2218-1997/7/3/56
work_keys_str_mv	AT yurilyubarsky emissionmechanismsoffastradiobursts
_version_	1724231422157258752

Emission Mechanisms of Fast Radio Bursts

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