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Fast Radio Burst (FRB)
Nachdem zunächst nur von einzelnen und schwer zu lokalisierenden Ereignissen die Rede war, siehe z.B. FRBs und Perytons, sprechen wir jetzt schon von Hunderten solcher Fälle. Insbesondere das Canadian Hydrogen Intensity Mapping Experiment (CHIME) hat den Zähler bereits im ersten Betriebsjahr um 500 FRBs erhöht:
Number of mysterious radio flashes quadruples
At the recent virtual meeting of the American Astronomical Society, a first data release from the Canadian Hydrogen Intensity Mapping Experiment (CHIME) nearly quadruples that number with 535 new fast radio bursts (FRBs), including 61 bursts from 18 repeating sources. The data come from the detector’s first year of operations, from mid-2018 to mid-2019.
CHIME is uniquely suited to finding FRBs because, unlike most radio telescopes with postage-stamp fields of view, it scans the whole sky visible from its location in British Columbia every night. Astronomers then use digital signal-processing to work through huge amounts of data - about 7 terabits per second, equivalent to a few percent of the world’s internet traffic - to “focus” on FRB signals.
Ein wesentlicher Fortschritt im Verständnis von FRBs gelang dabei mit dem Nachweis von FRB 200428
Ein innergalaktischer FRB und Magnetar
On 28 April 2020, CHIME astronomers reported the detection of a bright radio burst from the direction of the Galactic magnetar SGR 1935+2154 about 30,000 light years away in the Vulpecula constellation.
Nachdem zunächst nur von einzelnen und schwer zu lokalisierenden Ereignissen die Rede war, siehe z.B. FRBs und Perytons, sprechen wir jetzt schon von Hunderten solcher Fälle. Insbesondere das Canadian Hydrogen Intensity Mapping Experiment (CHIME) hat den Zähler bereits im ersten Betriebsjahr um 500 FRBs erhöht:
Number of mysterious radio flashes quadruples
At the recent virtual meeting of the American Astronomical Society, a first data release from the Canadian Hydrogen Intensity Mapping Experiment (CHIME) nearly quadruples that number with 535 new fast radio bursts (FRBs), including 61 bursts from 18 repeating sources. The data come from the detector’s first year of operations, from mid-2018 to mid-2019.
CHIME is uniquely suited to finding FRBs because, unlike most radio telescopes with postage-stamp fields of view, it scans the whole sky visible from its location in British Columbia every night. Astronomers then use digital signal-processing to work through huge amounts of data - about 7 terabits per second, equivalent to a few percent of the world’s internet traffic - to “focus” on FRB signals.
Ein wesentlicher Fortschritt im Verständnis von FRBs gelang dabei mit dem Nachweis von FRB 200428
Ein innergalaktischer FRB und Magnetar
On 28 April 2020, CHIME astronomers reported the detection of a bright radio burst from the direction of the Galactic magnetar SGR 1935+2154 about 30,000 light years away in the Vulpecula constellation.