Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Faran, Tamar"'
Acoustic perturbations to stellar envelopes can lead to the formation of weak shock waves via nonlinear wave-steepening. Close to the stellar surface, the weak shock wave increases in strength and can potentially lead to the expulsion of part of the
Externí odkaz:
http://arxiv.org/abs/2410.08232
A new type of self-similarity is found in the problem of a plane-parallel, ultra-relativistic blast wave, propagating in a powerlaw density profile of the form $\rho \propto z^{-k}$. Self-similar solutions of the first kind can be found for $k<7/4$ u
Externí odkaz:
http://arxiv.org/abs/2402.07978
Nonlinear acoustic evolution is often discussed in the context of wave-steepening that leads to shock formation, and is of special interest in applications where the shock continues to strengthen due to a narrowing of its channel or the stratificatio
Externí odkaz:
http://arxiv.org/abs/2310.01481
Autor:
Faran, Tamar, Sari, Re'em
We calculate the observed luminosity and spectrum following the emergence of a relativistic shock wave from a stellar edges. Shock waves propagating at $0.6<\Gamma_\text{sh}\beta_\text{sh}$, where $\Gamma_\text{sh}$ is the shock Lorentz factor and $\
Externí odkaz:
http://arxiv.org/abs/2207.02866
Autor:
Faran, Tamar, Sari, Re'em
The hydrodynamics of an ultrarelativistic flow, enclosed by a strong shock wave, are described by the well known Blandford-McKee solutions in spherical geometry. These solutions, however, become inaccurate at a distance $\sim R/2$ behind the shock wa
Externí odkaz:
http://arxiv.org/abs/2011.05990
Autor:
Faran, Tamar, Sari, Re'em
When the shock wave generated in a supernova explosion breaks out of the stellar envelope, the first photons, typically in the X-ray to UV range, escape to the observer. Following this breakout emission, radiation from deeper shells diffuses out of t
Externí odkaz:
http://arxiv.org/abs/1908.06990
The light curves of type-II supernovae (SNe) are believed to be highly affected by recombination of hydrogen that takes place in their envelopes. In this work, we analytically investigate the transition from a fully ionized envelope to a partially re
Externí odkaz:
http://arxiv.org/abs/1905.00037
In this work we present a uniform analysis of the temperature evolution and bolometric luminosity of a sample of 29 type-II supernovae (SNe), by fitting a black body model to their multi-band photometry. Our sample includes only SNe with high quality
Externí odkaz:
http://arxiv.org/abs/1707.07695
We reduced ESO's archival linear spectropolarimetry data (4000-9000\AA) of 6 highly polarized and 8 unpolarized standard stars observed between 2010 and 2016, for a total of 70 epochs, with the FOcal Reducer and low dispersion Spectrograph (FORS2) mo
Externí odkaz:
http://arxiv.org/abs/1610.00722
Autor:
Faran, Tamar, Poznanski, Dovi, Filippenko, Alexei V., Chornock, Ryan, Foley, Ryan J., Ganeshalingam, Mohan, Leonard, Douglas C., Li, Weidong, Modjaz, Maryam, Nakar, Ehud, Serduke, Frank J. D., Silverman, Jeffrey M.
Publikováno v:
MNRAS 442 844F (2014)
We study a sample of 23 Type II Plateau supernovae (SNe II-P), all observed with the same set of instruments. Analysis of their photometric evolution confirms that their typical plateau duration is 100 days with little scatter, showing a tendency to
Externí odkaz:
http://arxiv.org/abs/1404.0378