Noam Soker

The failed failed-supernova scenario of M31-2014-DS1

Noam Soker

I examine a recently proposed failed-supernova scenario for the fading of the yellow supergiant event M31-2014-DS1, and find that it requires unlikely fine-tuned parameters to work, if at all. In the failed-supernova scenario, most of the yellow supergiant collapsed to form a …

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Identifying a Circum-jet Southern Ring Counterpart to the Northern Jet of the Crab Nebula

Noam Soker

Abstract I analyze images of the Crab Nebula core-collapse supernova (CCSN) remnant in light of recent three-dimensional hydrodynamical simulations of the jittering-jets explosion mechanism (JJEM) and identify a southern ring opposite to the northern jet, which I attribute to a counterjet. The …

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Reproducing Morphological Features in the Supernova Remnant G11.2-0.3 by Simulating Jittering Jets

Muhammad Akashi, Noam Soker

Abstract We hydrodynamically simulate a core-collapse supernova (CCSN) explosion by launching three pairs of jets in the framework of the jittering-jets explosion mechanism (JJEM), and reproduce a morphology of two opposite circum-jet rings and a bar of dense gas perpendicular to the …

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High Mass Accretion Rates onto Evolved Stripped-envelope Massive Stars by Jet-induced Mass Removal

Yotham Cohen, Ealeal Bear, Noam Soker

Abstract Simulating one-dimensional stellar evolution models with mesa , we show that removing the outer inflated envelope of a mass-accreting evolved stripped-envelope star, like a Wolf–Rayet (WR) star, substantially moderates the stellar expansion during accretion at high-mass accretion rates. We study the …

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Jittering Jets Promote Dust Formation in Core-Collapse Supernovae

Noam Soker

I find that the dust morphologies in some core-collapse supernova (CCSN) remnants (CCSNRs) possess jet-shaped morphologies, and propose that the properties of the jets that explode the CCSNe and their interaction with the core and envelope (if it exists) are among the …

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The explosion jets of the core-collapse supernova remnant Circinus X-1

Noam Soker, Muhammad Akashi

We propose that the recently analyzed opposite rings in the Circinus X-1 (Cir X-1) core collapse supernova (CCSN) remnant resulted from a pair of opposite jets at the final phases of the jet-driven explosion process of the progenitor of Cir X-1. We …

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Multiple Shells in Supernova 2023ixf Support the Jittering Jets Explosion Mechanism

Noam Soker, Kobi Shiran

Abstract Examining the photospheric time evolution of the core-collapse supernova (CCSN) SN 2023ixf from the literature, we identify two (possibly three) evolutionary time periods with constant expansion velocities, which we attribute to two (or three) ejecta shells. We find that several CCSN …

Point-symmetric morphology in supernova remnant G11.2-0.3: the jittering jets explosion mechanism

Noam Soker

I identify a point-symmetric morphology in the core-collapse supernova (CCSN) remnant SNR G11.2-0.3 composed of three pairs of opposite morphological features, and attribute their shaping to three energetic pairs of jets during the explosion process in the frame of the jittering jets …

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Tycho Supernova Exploded Inside a Planetary Nebula (SNIP)

Noam Soker

I analyze recent X-ray data from the literature of the type Ia supernova remnant (SNR Ia) Tycho and conclude that Tycho is a SN Ia inside a planetary nebula (SNIP), strengthening such a previous suggestion from 1985. The observations reveal two opposite …

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Attributing the point symmetric structure of core-collapse supernova remnant N132D to the jittering jets explosion mechanism

Noam Soker

I identified a point-symmetric morphology in the core-collapse supernova (CCSN) remnant (CCSNR) N132D, composed of two symmetry axes: the short symmetry axis extending from the northwest ear and through the center of the iron-rich emission on the other side, and the second …

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Attributing the Supernova Remnant RCW 89 to the Jittering Jets Explosion Mechanism

Noam Soker

Abstract I examine recent radio observations of the supernova remnant (SNR) RCW 89 and identify a point-symmetric morphology composed of two main symmetry axes. I attribute this morphology to a jet-driven explosion in the framework of the jittering jets explosion mechanism (JJEM). …

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Multiple shells in supernova 2023ixf support the jittering jets explosion mechanism (JJEM)

Noam Soker, Kobi Shiran

Examining the photospheric time evolution of the core-collapse supernova (CCSN) SN 2023ixf from the literature, we identify two (possibly three) evolutionary time periods with constant expansion velocities, which we attribute to two (or three) ejecta shells. We find that several CCSN remnants …

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