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The r-process nucleosynthesis in core-collapse supernovae (CC-SNe) is studied, with a focus on the explosion scenario induced by rotation and strong magnetic fields. Nucleosynthesis calculations are conducted based on magneto-hydrodynamical…

太阳与恒星天体物理 · 物理学 2015-09-07 Nobuya Nishimura , Tomoya Takiwaki , Friedrich-Karl Thielemann

Rotating massive stars with initial progenitor masses $M_{\rm prog} \sim$ 25 $M_{\odot}$ -- $\sim$140 $M_{\odot}$ can leave rapidly rotating black holes to become collapsars. The black holes and the surrounding accretion disks may develop…

高能天体物理现象 · 物理学 2023-05-10 Shing-Chi Leung , Ken'ichi Nomoto , Tomoharu Suzuki

This is a status report on our endeavor to reveal the mechanism of core-collapse supernovae (CCSNe) by large-scale numerical simulations. Multi-dimensionality of the supernova engine, general relativistic magnetohydrodynamics, energy and…

高能天体物理现象 · 物理学 2013-04-29 Kei Kotake , Kohsuke Sumiyoshi , Shoichi Yamada , Tomoya Takiwaki , Takami Kuroda , Yudai Suwa , Hiroki Nagakura

I review the influence jets and the bubbles they inflate might have on their ambient gas as they operate through a negative jet feedback mechanism (JFM). I discuss astrophysical systems where jets are observed to influence the ambient gas,…

高能天体物理现象 · 物理学 2016-11-23 Noam Soker

A large fraction of core-collapse supernovae (CCSNe), 30-50%, are expected to originate from the low-mass end of progenitors with $M_{\rm ZAMS}~= 8-12~M_\odot$. However, degeneracy effects make stellar evolution modelling of such stars…

太阳与恒星天体物理 · 物理学 2018-01-24 A. Jerkstrand , T. Ertl , H. -T. Janka , E. Müller , T. Sukhbold , S. E. Woosley

Supernovae explosions of massive stars are nowadays believed to result from a two-step process, with an initial gravitational core collapse followed by an expansion of matter after a bouncing on the core. This scenario meets several…

太阳与恒星天体物理 · 物理学 2022-08-02 Pierre-Henri Chavanis , Bruno Denet , Martine Le Berre , Yves Pomeau

We identify a point-symmetric morphology of three pairs of ears/clumps in the core-collapse supernova remnant (CCSNR) Puppis A, supporting the jittering jets explosion mechanism (JJEM). In the JJEM, the three pairs of jets that shaped the…

高能天体物理现象 · 物理学 2025-03-18 Ealeal Bear , Dmitry Shishkin , Noam Soker

Most massive stars end their lives with core collapse. However, it is not clear which explode as a Core-collapse Supernova (CCSN), leaving behind a neutron star and which collapse to black hole, aborting the explosion. One path to predict…

高能天体物理现象 · 物理学 2023-11-07 Mariam Gogilashvili , Jeremiah W. Murphy , Jonah M. Miller

Massive ($\geq$8 $M_\odot$) stars perish via one of two fates: core-collapse supernovae (CCSNe), which release synthesized heavy elements, or failed supernovae, thereby forming black holes. In the conventional Galactic chemical evolution…

星系天体物理 · 物理学 2022-11-30 Takuji Tsujimoto

I identify a point-symmetric structure in recently published VLT/MUSE velocity maps of different elements in a plane along the line of sight at the center of the supernova remnant SNR 0540-69.3, and argue that jittering jets that exploded…

高能天体物理现象 · 物理学 2022-03-14 Noam Soker

The neutrino-driven explosion mechanism for core-collapse supernovae in its modern flavor relies on the additional support of hydrodynamical instabilities in achieving shock revival. Two possible candidates, convection and the so-called…

太阳与恒星天体物理 · 物理学 2015-06-05 B. Mueller , H. -Th. Janka , A. Heger

Supernovae (SNe) that show evidence of strong shock interaction between their ejecta and pre-existing, slower circumstellar material (CSM) constitute an interesting, diverse, and still poorly understood category of explosive transients. The…

高能天体物理现象 · 物理学 2018-04-25 Nathan Smith

Analyzing images of the Cygnus Loop, a core-collapse supernova (CCSN) remnant, in different emission bands, we identify a point-symmetrical morphology composed of three symmetry axes that we attribute to shaping by three pairs of jets. The…

高能天体物理现象 · 物理学 2024-11-11 Dmitry Shishkin , Roy Kaye , Noam Soker

We analyze recent magnetar light-curve modeling of 38 hydrogen-poor superluminous supernovae (SLSNe), and find that the energies of the explosions themselves, that take place before the magnetar energy is released, are more than what the…

高能天体物理现象 · 物理学 2017-12-27 Noam Soker , Avishai Gilkis

The details of the physical mechanism that drives core-collapse supernovae (CCSNe) remain uncertain. While there is an emerging consensus on the qualitative outcome of detailed CCSN mechanism simulations in 2D, only recently have…

高能天体物理现象 · 物理学 2018-10-10 Evan O'Connor , Sean Couch

Neutrinos from core collapse supernovae can be emitted from a rapidly accreting disk surrounding a black hole, instead of the canonical proto-neutron star. For Galactic events, detector count rates are considerable and in fact can be in the…

天体物理学 · 物理学 2008-11-26 G. C. McLaughlin , R. Surman

Core-collapse supernovae (CCSNe) are the final stage of massive stars, marking the birth of neutron stars (NSs). The aspherical mass ejection drives a natal kick of the forming NS. In this work we study the properties of the NS kick based…

高能天体物理现象 · 物理学 2019-10-23 Ko Nakamura , Tomoya Takiwaki , Kei Kotake

Core-collapse supernovae (CCSNe) are regularly observed electromagnetically, prompting targetted searches for their gravitational-wave emission. However, there are scenarios where these powerful explosions may not have any observable…

高能天体物理现象 · 物理学 2025-09-30 Jade Powell , Bernhard Müller

Core-collapse supernovae (CCSNe) are the extremely energetic deaths of massive stars. They play a vital role in the synthesis and dissemination of many heavy elements in the universe. In the past, CCSN nucleosynthesis calculations have…

Core collapse supernovae (SN) are the final stages of stellar evolution in massive stars during which the central region collapses, forms a neutron star (NS), and the outer layers are ejected. Recent explosion scenarios assumed that the…

天体物理学 · 物理学 2007-05-23 P. Hoeflich , A. Khokhlov , L. Wang