Burst timescales and luminosities as links between young pulsars and fast radio bursts
Fast radio bursts (FRBs) are extragalactic radio flashes of unknown physical origin. Their high luminosities and short durations require extreme energy densities, like those found in the vicinity of neutron stars and black holes. Studying the burst intensities and polarimetric properties on a wid...
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Springer Science and Business Media LLC
2022
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| Online Access: | https://hdl.handle.net/1721.1/142155 |
| _version_ | 1811070791266074624 |
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| author | Masui, Kiyoshi |
| author2 | MIT Kavli Institute for Astrophysics and Space Research |
| author_facet | MIT Kavli Institute for Astrophysics and Space Research Masui, Kiyoshi |
| author_sort | Masui, Kiyoshi |
| collection | MIT |
| description | Fast radio bursts (FRBs) are extragalactic radio flashes of unknown physical
origin. Their high luminosities and short durations require extreme energy
densities, like those found in the vicinity of neutron stars and black holes.
Studying the burst intensities and polarimetric properties on a wide range of
timescales, from milliseconds down to nanoseconds, is key to understanding the
emission mechanism. However, high-time-resolution studies of FRBs are limited
by their unpredictable activity levels, available instrumentation and temporal
broadening in the intervening ionised medium. Here we show that the repeating
FRB 20200120E can produce isolated shots of emission as short as about 60
nanoseconds in duration, with brightness temperatures as high as $3\times
10^{41}$ K (excluding relativistic effects), comparable to `nano-shots' from
the Crab pulsar. Comparing both the range of timescales and luminosities, we
find that FRB 20200120E observationally bridges the gap between known Galactic
young pulsars and magnetars, and the much more distant extragalactic FRBs. This
suggests a common magnetically powered emission mechanism spanning many orders
of magnitude in timescale and luminosity. In this work, we probe a relatively
unexplored region of the short-duration transient phase space; we highlight
that there likely exists a population of ultra-fast radio transients at
nanosecond to microsecond timescales, which current FRB searches are
insensitive to. |
| first_indexed | 2024-09-23T08:41:38Z |
| format | Article |
| id | mit-1721.1/142155 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:41:38Z |
| publishDate | 2022 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1421552023-04-14T18:05:18Z Burst timescales and luminosities as links between young pulsars and fast radio bursts Masui, Kiyoshi MIT Kavli Institute for Astrophysics and Space Research Massachusetts Institute of Technology. Department of Physics Fast radio bursts (FRBs) are extragalactic radio flashes of unknown physical origin. Their high luminosities and short durations require extreme energy densities, like those found in the vicinity of neutron stars and black holes. Studying the burst intensities and polarimetric properties on a wide range of timescales, from milliseconds down to nanoseconds, is key to understanding the emission mechanism. However, high-time-resolution studies of FRBs are limited by their unpredictable activity levels, available instrumentation and temporal broadening in the intervening ionised medium. Here we show that the repeating FRB 20200120E can produce isolated shots of emission as short as about 60 nanoseconds in duration, with brightness temperatures as high as $3\times 10^{41}$ K (excluding relativistic effects), comparable to `nano-shots' from the Crab pulsar. Comparing both the range of timescales and luminosities, we find that FRB 20200120E observationally bridges the gap between known Galactic young pulsars and magnetars, and the much more distant extragalactic FRBs. This suggests a common magnetically powered emission mechanism spanning many orders of magnitude in timescale and luminosity. In this work, we probe a relatively unexplored region of the short-duration transient phase space; we highlight that there likely exists a population of ultra-fast radio transients at nanosecond to microsecond timescales, which current FRB searches are insensitive to. 2022-04-27T18:01:58Z 2022-04-27T18:01:58Z 2022-03 2022-04-27T17:57:06Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/142155 Masui, Kiyoshi. 2022. "Burst timescales and luminosities as links between young pulsars and fast radio bursts." Nature Astronomy, 6 (3). en 10.1038/s41550-021-01569-9 Nature Astronomy Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Springer Science and Business Media LLC 599440 |
| spellingShingle | Masui, Kiyoshi Burst timescales and luminosities as links between young pulsars and fast radio bursts |
| title | Burst timescales and luminosities as links between young pulsars and fast radio bursts |
| title_full | Burst timescales and luminosities as links between young pulsars and fast radio bursts |
| title_fullStr | Burst timescales and luminosities as links between young pulsars and fast radio bursts |
| title_full_unstemmed | Burst timescales and luminosities as links between young pulsars and fast radio bursts |
| title_short | Burst timescales and luminosities as links between young pulsars and fast radio bursts |
| title_sort | burst timescales and luminosities as links between young pulsars and fast radio bursts |
| url | https://hdl.handle.net/1721.1/142155 |
| work_keys_str_mv | AT masuikiyoshi bursttimescalesandluminositiesaslinksbetweenyoungpulsarsandfastradiobursts |