English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report the detection of a single burst from the first-discovered repeatingFast Radio Burst source, FRB 121102, with CHIME/FRB, which operates in thefrequency band 400-800 MHz. The detected burst occurred on 2018 November 19 andits emission extends down to at least 600 MHz, the lowest frequency detectionof this source yet. The burst, detected with a significance of 23.7$\sigma$,has fluence 12$\pm$3 Jy ms and shows complex time and frequency morphology. The34 ms width of the burst is the largest seen for this object at any frequency.We find evidence of sub-burst structure that drifts downward in frequency at arate of -3.9$\pm$0.2 MHz ms$^{-1}$. Our best fit tentatively suggests adispersion measure of 563.6$\pm$0.5 pc cm$^{-3}$, which is ${\approx}$1% higherthan previously measured values. We set an upper limit on the scattering timeat 500 MHz of 9.6 ms, which is consistent with expectations from theextrapolation from higher frequency data. We have exposure to the position ofFRB 121102 for a total of 11.3 hrs within the FWHM of the synthesized beams at600 MHz from 2018 July 25 to 2019 February 25. We estimate on the basis of thissingle event an average burst rate for FRB 121102 of 0.1-10 per day in the400-800 MHz band for a median fluence threshold of 7 Jy ms in the stated timeinterval.

CHIME/FRB Detection of the Original Repeating Fast Radio Burst Source FRB 121102