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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

22 Sep 2005 Swift-BAT triggered and located GRB050922C. The light curve showsthe intense broad peak with $T_{90}$ of $(5 \pm 1)$ s. The Nordic OpticalTelescope has obtained spectra of the afterglow with several absorptionfeatures corresponding to a redshift of $z = 2.17 \pm 0.03$. Observation ofoptical transient of GRB050922C was carried out in the R-band with the 60-cmtelescope equipped with a CCD on Peak Terskol (North Caucasus). The OTmagnitude was fading from R $\approx 16$ to $\approx 17.5$. Detection of anoscillatory phenomenon in the R post-burst light curve is described in thiswork. Analysis of the R data reveals coherent harmonic with a period of $0.0050\pm 0.0003$ days (7.2 min) during observing run of about 0.05 days ($\sim 70$min). Amplitude of oscillations is about 0.05 magnitude. The simplest modelsuggests that GRB050922C may result from tidal disruption of a white dwarf starby a black hole of about one thousand solar mass. The periodicity in the lightcurve can be identified with relativistic precession of an accretion disc.

Detection of an oscillatory phenomenon in optical transient counterpart of GRB090522C from observations on Peak Terskol