FAST assists expose the origin of quick radio bursts


IMAGE: Left: Time stamp of multi-band observations of SGR J1935 +2154. Right: The detection limit of FAST.
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Credit: NAOC

Scientists from Beijing Regular University, Peking University and National Astronomical Observatories of the Chinese Academy of Sciences (NAOC) discovered that there is weak connection in between quick radio bursts( FRBs) and soft gamma-ray repeater J1935 +2145( SGRs). The research study was released in Nature on Nov. 4. .(* )The detection of FRB 200428 related to the stellar magnetar SGR J1935 +2154 supplies essential hints to the generation of FRBs. .

They utilized the Five-hundred-meter Aperture Round radio Telescope (QUICK) to perform multi-band joint observations of the Galaxy magnetar SGR J1935 +2145. .

In April, Dr. LIN Lin from Beijing Regular University, very first author of the research study, proposed keeping an eye on SGR J1935 +2154, a soft gamma-ray repeater revealing FRB like pulses, to check out the origin of FRBs. QUICK found no pulse throughout the project, especially around the arrival time of 29 high-energy bursts. .

Integrated with CHIME and STARE-2 detections?FAST’s outcomes cover 8 orders of magnitude on the brightness scale, therefore offering the most rigid limitation to the radio flux of this Stellar quick radio burst (FRB) sources. .

“The weak connection might be discussed by unique geometry and/or minimal bandwidth of FRBs,” stated Prof. ZHANG Bing from University of Nevada, matching author of the research study. “The observations of SGR J1935 start to expose the magnetar origin of FRBs, although other possibilities still exist.” .

While continuing the tracking of SGR J1935 +2154, the extraordinary level of sensitivity of FAST has prospective for transforming our understanding of radio transients. In May of this year, Prof. ZHU Weiwei from NAOC, co-author of the research study, released the very first brand-new FRB found by FAST. .

According to Prof. LI Di, co-corresponding author of the research study, FAST’s chief researcher, “FAST has actually found more than 5 brand-new FRBs and has actually found more than 1,600 pulses from understood duplicating sources. FAST is and will be making distinct contributions to this young and active field.” .



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