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Using a one-dimensional stellar evolution code we simulate the response of a red supergiant (RSG) star to injection of energy and to mass removal. We take the values of the energy that we inject and the mass that we remove according to our…

High Energy Astrophysical Phenomena · Physics 2022-08-17 Nitzan Ragoler , Ealeal Bear , Ron Schreier , Shlomi Hillel , Noam Soker

We propose a new type of repeating transient outburst initiated by a neutron star (NS) entering the envelope of an evolved massive star, accreting envelope material and subsequently launching jets which interact with their surroundings.…

High Energy Astrophysical Phenomena · Physics 2018-11-07 Avishai Gilkis , Noam Soker , Amit Kashi

I propose a new scenario, the polar common envelope jets supernova (CEJSN) impostor scenario, to account for AT2018cow-like fast blue optical transients (FBOTs). The polar CEJSN impostor scenario evolves through four main phases. (1) A red…

High Energy Astrophysical Phenomena · Physics 2022-05-04 Noam Soker

We suggest a common envelope jets supernova (CEJSN) origin to the supernova remnant (SNR) W49B where jets launched by a neutron star (NS) that collapsed to a black hole (BH) together with a thermonuclear outburst of the disrupted red super…

High Energy Astrophysical Phenomena · Physics 2023-07-05 Aldana Grichener , Noam Soker

I propose a new type of common envelope jets supernova (CEJSN) events where instead of a single neutron star (NS; or a black hole; BH) a tight binary system of a NS and a main sequence star enters a common envelope evolution (CEE) with a…

High Energy Astrophysical Phenomena · Physics 2021-05-12 Noam Soker

We conduct three-dimensional hydrodynamical simulations of eccentric common envelope jets supernova (CEJSN) impostors, i.e., a neutron star (NS) that crosses through the envelope of a red supergiant star on a highly eccentric orbit and…

High Energy Astrophysical Phenomena · Physics 2021-09-29 Ron Schreier , Shlomi Hillel , Sagiv Shiber , Noam Soker

We conduct three-dimensional hydrodynamical simulations of common envelope jets supernova (CEJSN) events where we assume that a neutron star (NS) launches jets as it orbits inside the outer zones of a red supergiant (RSG) envelope, and find…

High Energy Astrophysical Phenomena · Physics 2022-05-25 Shlomi Hillel , Ron Schreier , Noam Soker

We conduct a three-dimensional hydrodynamical simulation of a common envelope evolution (CEE) where a neutron star (NS) spirals-in inside the envelope of a red supergiant (RSG) star in a predetermined orbit. We find that the jets shed pairs…

High Energy Astrophysical Phenomena · Physics 2023-08-21 Shlomi Hillel , Ron Schreier , Noam Soker

We simulate the influence of the energy that the merger process of two neutron stars (NSs) releases inside a red supergiant (RSG) star on the RSG envelope inner to the merger location. In the triple star common envelope evolution (CEE) that…

High Energy Astrophysical Phenomena · Physics 2021-12-22 Muhammad Akashi , Noam Soker

We propose a common-envelope jets supernova (CEJSN) scenario for the fast-rising blue optical transient AT2018cow. In a CEJSN a neutron star (NS) spirals-in inside the extended envelope of a massive giant star and enters the core. The NS…

High Energy Astrophysical Phenomena · Physics 2019-02-13 Noam Soker , Aldana Grichener , Avishai Gilkis

We study r-process feasibility inside jets launched by a cold neutron star (NS) spiralling-in inside the core of a giant star, and find that such common envelope jets supernova events might be a significant source of heavy r-process…

Solar and Stellar Astrophysics · Physics 2019-06-19 Aldana Grichener , Noam Soker

We conducted three-dimensional hydrodynamical simulations of common envelope evolution (CEE) of a neutron star (NS) or a black hole (BH) inside a red supergiant (RSG) envelope and find that the jets that we expect the NS/BH to launch during…

High Energy Astrophysical Phenomena · Physics 2023-02-15 Ron Schreier , Shlomi Hillel , Noam Soker

We study high energy neutrino emission from relativistic jets launched by a black hole (BH) spiraling-in inside the envelope of a red supergiant (RSG), and find that such common envelope jets supernovae (CEJSNe) are a potential source for…

High Energy Astrophysical Phenomena · Physics 2021-08-11 Aldana Grichener , Noam Soker

We use a numerical Galactic chemical evolution model and find that the common envelope jets supernova (CEJSN) r-process scenario can account for both the very early average ratio of europium to iron and its evolution at later times in the…

High Energy Astrophysical Phenomena · Physics 2022-02-23 Aldana Grichener , Chiaki Kobayashi , Noam Soker

I explore a triple-star scenario where a tight neutron star (NS) - NS binary system enters the envelope of a red supergiant (RSG) star and spirals-in towards its core. The two NSs accrete mass through accretion disks and launch jets that…

High Energy Astrophysical Phenomena · Physics 2021-07-07 Noam Soker

We calculate the lightcurves of jet-driven bipolar core collapse supernova (CCSN) explosions into a bipolar circumstellar mater (CSM) and show that an equatorial observer finds the lightcurves to possess a rapid, and even an abrupt, drop.…

High Energy Astrophysical Phenomena · Physics 2022-12-14 Muhammad Akashi , Amir Michaelis , Noam Soker

We use the stellar evolution code MESA to study the negative jet feedback mechanism in common envelope jets supernovae (CEJSNe) where a neutron star (NS) launches jets in the envelope of a red supergiant (RSG), and find that the feedback…

High Energy Astrophysical Phenomena · Physics 2021-12-01 Aldana Grichener , Coral Cohen , Noam Soker

We simulate the response of a main sequence star to the explosion of a stripped-envelope (type Ib or Ic) core collapse supernova (CCSN) when the main sequence star orbits the core at a distance of 10-20Ro at explosion. We use the stellar…

High Energy Astrophysical Phenomena · Physics 2022-08-31 Ofek Hober , Ealeal Bear , Noam Soker

We conducted three-dimensional hydrodynamical simulations to study the interaction of two late opposite jets with the ejecta of a core collapse supernova (CCSN), and study the bipolar structure that results from this interaction as the jets…

High Energy Astrophysical Phenomena · Physics 2021-01-06 Muhammad Akashi , Noam Soker

We suggest that the energetic radiation from core-collapse super-energetic supernovae (SESNe) is due to a long lasting accretion process onto the newly born neutron star (NS), resulting from an inefficient operation of the jet-feedback…

High Energy Astrophysical Phenomena · Physics 2016-08-17 Avishai Gilkis , Noam Soker , Oded Papish
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