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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Long GRB 190114C, identified on January 14th, 2019, was the first Gamma-rayBurst that substantially violated the defined 10 GeV energy limit of theSynchrotron model, with an observed emission between 0.2 - 1 TeV and a lowredshift of z = 0.425. This paper analyzes its immediate afterglow broadbandspectrum from 10$^{17}$ to 10$^{26}$ Hz based on observations by the SwiftX-ray Telescope (XRT), Fermi Gamma-Ray Burst Monitor (GBM), Swift Burst AlertTelescope (BAT), Fermi Large Area Telescope (LAT), and Major Atmospheric GammaImaging Cherenkov Telescope (MAGIC). We first calculate the physicalcharacteristics necessary to understand the conditions in the burst's emittingregion, then conduct temporal and spectral analyses by deriving light curvesand spectra using a chain polynomial best-fit in the context of the forwardshock model in a homogeneous circumburst density. The Spectral EnergyDistributions are found to be double-peaked for T$_0$ + 68-180s, and we showthe distribution consists of a distinct Synchrotron component followed by aninverse Compton component explained by high-energy electrons up-scatteringSynchrotron photons. We find our calculated Bulk Lorentz Factor = 351sufficiently explains the peak of the inverse Compton component at sub-TeVenergy levels in the immediate afterglow, and that the Comptonization of theburst proceeds in the Klein-Nishina regime. We conclude this further evidencesSynchrotron self-Compton emission as the mechanism behind the production ofVery-High-Energy photons in GRB 190114C.

Immediate Afterglow Physical Characteristics and Broadband Spectra  Evidence Synchrotron self-Compton Emission as the Reason for VHE Production  in TeV GRB 190114C