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arXiv 1711.03428astro-ph.HE
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贫氢超亮超新星中的喷流:来自射电观测综合分析的约束

Jets in Hydrogen-poor Super-luminous Supernovae: Constraints from a Comprehensive Analysis of Radio Observations

D. L. Coppejans, R. Margutti, C. Guidorzi, L. Chomiuk, K. D. Alexander, E. Berger, M. F. Bietenholz, P. K. Blanchard, P. Challis, R. Chornock, M. Drout, W. Fong… 展开作者

D. L. Coppejans, R. Margutti, C. Guidorzi, L. Chomiuk, K. D. Alexander, E. Berger, M. F. Bietenholz, P. K. Blanchard, P. Challis, R. Chornock, M. Drout, W. Fong, A. Mac Fadyen, G. Migliori, D. Milisavljevic, M. Nicholl, J. T. Parrent, G. Terreran, B. A. Zauderer

摘要:

氢剥离超亮超新星(SLSNe-I)的极端光学亮度的能量来源尚不清楚,但最近的研究强调了中央引擎的情况。无线电和/或X射线观测最适合跟踪最快的喷出物,并探测中央发动机流出物的存在。我们收集了迄今为止所有已发表的SLSNe-I的射电观测资料,并提出了两个新SLSNe-I的三个新观测资料。未检测到。通过模拟射电辐射,我们限制了SLSNe-I的亚秒差距环境和可能的外流。在这个例子中,我们排除了在伽马射线暴(GRB)中检测到的同轴准直相对论喷流。我们约束离轴射流与5 \arcdeg \(30 \arcdeg)的能量$\rm{E_k<4\times10^{50}\,erg}$($\rm{E_k<10^{50}\,erg}$)在环境中形成的祖先与质量损失率$\dot{M}<10^{-4}\,M_{\odot}\,{\rm yr}^{-1}$($\dot{M}<10^{-5}\,M_{\odot}\,{\rm yr}^{-1}$)的所有离轴角,假设基准值$ε_e=0.1$和$ε_B=0.01$。最深的极限排除了在微弱的未准直的GRB(GRB 060218除外)和相对论性超新星中看到的那种发射。最后,对于最近的SLSN-I SN 2017 egm,我们将未准直的非相对论流出的能量限制为$E_{\rm k}\lesssim10^{48}$ erg,就像在正常SNe中观察到的那样。

英文摘要:

The energy source powering the extreme optical luminosity of hydrogen-stripped Superluminous Supernovae (SLSNe-I) is not known, but recent studies have highlighted the case for a central engine. Radio and/or X-ray observations are best placed to track the fastest ejecta and probe the presence of outflows from a central engine. We compile all the published radio observations of SLSNe-I to date and present three new observations of two new SLSNe-I. None were detected. Through modeling the radio emission, we constrain the sub-parsec environments and possible outflows in SLSNe-I. In this sample we rule out on-axis collimated relativistic jets of the kind detected in Gamma-Ray Bursts (GRBs). We constrain off-axis jets with opening angles of 5\arcdeg\ (30\arcdeg) to energies of $\rm{E_k<4\times10^{50}\,erg}$ ($\rm{E_k<10^{50}\,erg}$) in environments shaped by progenitors with mass-loss rates of $\dot{M}<10^{-4}\,M_{\odot}\,{\rm yr}^{-1}$ ($\dot{M}<10^{-5}\,M_{\odot}\,{\rm yr}^{-1}$) for all off-axis angles, assuming fiducial values $ε_e=0.1$ and $ε_B=0.01$. The deepest limits rule out emission of the kind seen in faint un-collimated GRBs (with the exception of GRB\,060218), and from relativistic supernovae. Finally, for the closest SLSN-I SN 2017egm we constrained the energy of an uncollimated non-relativistic outflow like those observed in normal SNe to $E_{\rm k}\lesssim10^{48}$ erg.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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