Ամսագրի կամ հրապարակման վերնագիր:

Բյուրականի աստղադիտարանի հաղորդումներ: Երևանի աստղադիտարանի բյուլետեն = Сообщения Бюраканской обсерватории. Бюллетень ереванской Астрономической обсерватории = Contributions from the Burakan observatory. Bulletin of the Erevan astronomical observatory

Հրապարակման ամսաթիվ:

2025

Հատոր:

72

Համար:

2

ISSN:

2579-2276

Ծածկույթ:

279-293

Ամփոփում:

Neutron stars in globular clusters undergo complex evolutionary pathways involving binary interactions, mass transfer, and dynamical exchanges. While direct N-body simulations like NBODY6++GPU have successfully modeled stellar dynamics and compact object formation, the explicit tracking of pulsar spin evolution and magnetic field decay has historically been absent. In Papers I and II of this series, we identified this gap and proposed seven distinct evolutionary scenarios for pulsars in dense stellar environments. Here we present a comprehensive case study from an existing simulation with N=105,000 particles, demonstrating concretely where a neutron star forms and evolves for 200 Myr without pulsar physics tracking. We compare our approach with the recent implementation and detail our seven-scenario framework incorporating magnetic dipole spin-down, exponential field decay, environmental torques, accretion-driven spin-up, gravitational wave radiation, and merger dynamics. The neutron star Pulsar973 formed at t=800 Myr with an anomalous post-supernova mass of 5.35 M⊙, evolved to 2.52 M⊙ by t=1000 Myr, yet lacks all pulsar parameters: period P, period derivative ˙P , magnetic field B, and scenario classification. We provide complete mathematical formulations with literature references for each scenario, demonstrating integration points within NBODY6++GPU’s Hermite scheme, Ahmad-Cohen neighbors, KS regularization, and BSE stellar evolution. Our framework enables scenario-based evolution, complementing population synthesis approaches.

Ձևաչափ:

pdf

Նույնացուցիչ:

oai:arar.sci.am:426410

Գլխավոր նշում:

Communications of the Byurakan Astrophysical Observatory (ComBAO) is a peer-reviewed scientific journal, which publishes research in observational and theoretical astronomy/astrophysics and presents recent advances in these fields. It is being published by the NAS RA V. Ambartsumian Byurakan Astrophysical Observatory (BAO) in English in electronic form. The journal publishes original papers, review papers, brief reports, book reviews, special communications, observational and theoretical results in various fields of astronomy and related sciences, and some editorial notes, including anniversaries and obituaries. Under the heading “Legacy”, the renewed magazine will republish some old articles of high value in English. The heading “Guest articles” will bring to the attention of readers the articles of researchers who are not employees of BAO. ComBAO was founded in 1946 and regularly published in 1946-1990. However, the publication was interrupted because of the economic situation after the disintegration of the Soviet Union in 1991.

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