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 propose an off-axis relativistic jet model for the Type Ic supernova SN2007gr. Most of the energy ($\sim2\times10^{51}$ erg) in the explosion iscontained in non-relativistic ejecta which produces the supernova. The opticalemission is coming from the decay process of $\rm ^{56}Ni$ synthesized in thebulk SN ejecta. Only very little energy ($\sim10^{48}$ erg) is contained in therelativistic jet with initial velocity about 0.94 times the speed of light. Theradio and X-ray emission comes from this relativistic jet. With some typicalparameters of a Wolf-Rayet star (progenitor of Type Ic SN), i.e., the mass lossrate $\dot{M}=1.0 \times10^{-5} M_{\odot} \rm yr^{-1}$ and the wind velocity$v_{\rm w}=1.5\times10^{3} \rm km s^{-1}$ together with an observing angle of$\theta_{\rm obs} = 63.3^{\circ}$, we can obtain the multiband light curvesthat fit the observations well. All the observed data are consistent with ourmodel. Thus we conclude that SN 2007gr contains a weak relativistic jet and weare observing the jet from off-axis.

An Off-Axis Relativistic Jet Model for the Type Ic supernova SN 2007gr