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Related papers: Identifying Thorne-\.Zytkow Objects through Neutri…

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Thorne-Zytkow objects (TZOs) are a theoretical class of star in which a compact neutron star is surrounded by a large, diffuse envelope. Supergiant TZOs are predicted to be almost identical in appearance to red supergiants (RSGs). The best…

Solar and Stellar Astrophysics · Physics 2015-06-19 Emily M. Levesque , Philip Massey , Anna N. Zytkow , Nidia Morrell

Thorne-\.Zytkow objects (T\.ZOs) are a class of stellar object comprised of a neutron star core surrounded by a large and diffuse envelope. Their exterior appearance is identical to red supergiants; the distinctive electromagnetic signature…

High Energy Astrophysical Phenomena · Physics 2021-04-28 Lindsay DeMarchi , J. R. Sanders , Emily M. Levesque

Thorne-$\.Z$ytkow objects (T$\.Z$O) are potential end products of the merger of a neutron star with a non-degenerate star. In this work, we have computed the first grid of evolutionary models of T$\.Z$Os with the MESA stellar evolution…

Solar and Stellar Astrophysics · Physics 2023-07-20 R. Farmer , M. Renzo , Y. Götberg , E. Bellinger , S. Justham , S. E de Mink

Thorne-\.Zytkow Objects (T\.ZOs) are hypothetical hybrid stars with a neutron star at the core of a large, diffuse envelope. (T\.ZOs) may be formed when a newly formed neutron star that is kicked by its supernova collides with its…

Solar and Stellar Astrophysics · Physics 2025-10-21 Lauryn E. Williams , Philip Chang , Emily M. Levesque , Thomas R. Quinn

The evolution of neutron stars (NSs) embedded within massive stellar envelopes is a critical phase in binary stellar evolution, potentially leading to the formation of Thorne-\.Zytkow Objects (T\.ZOs) or catastrophic collapse. We present…

High Energy Astrophysical Phenomena · Physics 2026-04-28 Patrick Chi-Kit Cheong , David Radice , Christopher L. Fryer

Context. Common envelope evolution of a massive star and a neutron star companion has two possible outcomes: formation of a short-period binary (a potential gravitational wave source progenitor) or a merger of the massive star with the…

Solar and Stellar Astrophysics · Physics 2025-02-05 K. Nathaniel , A. Vigna-Gómez , A. Grichener , R. Farmer , M. Renzo , R. W. Everson

We propose that massive Thorne-Zytkow objects can explode. A Thorne-Zytkow object is a theoretically predicted star that has a neutron core. When nuclear reactions supporting a massive Thorne-Zytkow object terminate, a strong accretion…

High Energy Astrophysical Phenomena · Physics 2018-03-12 Takashi J. Moriya

Thorne-Zytkow objects are stars that have a neutron star core with an extended hydrogen-rich envelope. Massive Thorne-Zytkow objects are proposed to explode when the nuclear reactions sustaining their structure are terminated by the…

High Energy Astrophysical Phenomena · Physics 2022-02-21 Takashi J. Moriya , Sergei I. Blinnikov

Models for the source and propagation of cosmic rays are stressed by observations of cosmic rays with energies $E>10^{20}$ eV. A key discriminant between different models may be complementary observations of neutrinos with energies…

Astrophysics · Physics 2011-05-12 D. Seckel

Interacting binary star systems play a critical role in many areas of astrophysics. One interesting example of a binary merger product are Thorne-\.Zytkow Objects (T\.ZOs), stars that look like red supergiants but contain neutron stars at…

Solar and Stellar Astrophysics · Physics 2025-09-12 Anna J. G. O'Grady , Takashi J. Moriya , Mathieu Renzo , Alejandro Vigna-Gómez

The next core-collapse supernova in our Galaxy will be a spectacular event, with some $10^4$ neutrino detections in total expected among several detectors. This data will allow unprecedented tests of neutrino properties and new…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. F. Beacom

Calculation of gravitational radiation during binary inspiral leading to possible formation of a Thorne-Zytkow (TZ) object (a neutron star inside a supergiant core) is performed. The calculations were done for polytropic density…

Astrophysics · Physics 2011-05-23 S. N. Nazin , K. A. Postnov

The IceCube Neutrino Observatory at the South Pole detects neutrinos of astrophysical origin via their interactions with ice. The main array is optimized for the detection of neutrinos with energies above 1 TeV. A much smaller infill array,…

High Energy Astrophysical Phenomena · Physics 2025-08-13 Aswathi Balagopal V. , Sam Hori , Justin Vandenbroucke

The Central Molecular Zone (CMZ), a star-forming region rich in molecular clouds located within hundreds of parsecs from the centre of our Galaxy, converts gas into stars less efficiently than anticipated. A key challenge in refining…

High Energy Astrophysical Phenomena · Physics 2026-02-25 Paul C. W. Lai , Beatrice Crudele , Matteo Agostini , Hayden P. H. Ng , Ellis R. Owen , Nishta Varma , Kinwah Wu

Neutrinos produced in the hot and dense interior of the next galactic supernova would be visible at dark matter experiments in coherent elastic nuclear recoils. While studies on this channel have focused on successful core-collapse…

High Energy Physics - Phenomenology · Physics 2020-04-15 Nirmal Raj

Neutron stars, just after their formation, are surrounded by expanding, dense, and very hot envelopes which radiate thermal photons. Iron nuclei can be accelerated in the wind zones of such energetic pulsars to very high energies. These…

Astrophysics · Physics 2009-11-07 J. H. Beall , W. Bednarek

With the arrival of km**3 volume scale neutrino detectors the chances to detect the first astronomical sources of TeV neutrinos will be dramatically increased. While the theoretical estimates of the neutrino fluxes contain large…

High Energy Astrophysical Phenomena · Physics 2011-04-28 Francesco Vissani , Felix Aharonian , Narek Sahakyan

The IceCube Neutrino Observatory is a cubic kilometer neutrino telescope located at the geographic South Pole. Cherenkov radiation emitted by charged secondary particles from neutrino interactions is observed by IceCube using an array of…

High Energy Astrophysical Phenomena · Physics 2026-04-01 Kevin J. Meagher

The detection of astrophysical neutrinos from transient sources can help to understand the origin of the neutrino diffuse flux and to constrain the underlying production mechanisms. In particular, proton-neutron collisions may produce GeV…

Instrumentation and Methods for Astrophysics · Physics 2023-08-23 Mathieu Lamoureux , Gwenhaël de Wasseige

The IceCube Collaboration has recently reported the observation of a flux of high-energy astrophysical neutrinos. The angular distribution of events is consistent with an isotropic arrival direction of neutrinos which is expected for an…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Markus Ahlers , Francis Halzen
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