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2023 Fiscal Year Final Research Report

Observational and theoretical studies on the disk instability in dwarf novae and application to active galactic nuclei

Research Project

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Project/Area Number 20K22374
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0204:Astronomy, earth and planetary science, and related fields
Research InstitutionKanazawa University (2023)
Institute of Physical and Chemical Research (2020-2022)

Principal Investigator

Kimura Mariko  金沢大学, 先端宇宙理工学研究センター, 助教 (40879699)

Project Period (FY) 2020-09-11 – 2024-03-31
Keywords降着円盤 / 数値シミュレーション / 激変星 / X線連星 / 活動銀河核
Outline of Final Research Achievements

In order to understand the diversity of dwarf nova outbursts revealed by recent advances in observational techniques, we have improved the disk instability model and performed numerical simulations. As a result, we succeeded in reproducing the luminosity variations of multiple sources. We have also improved the numerical simulation code to apply our research not only to dwarf novae but also to other accretion disk objects such as X-ray binary stars and active galactic nuclei.

Free Research Field

宇宙物理学・天文学

Academic Significance and Societal Importance of the Research Achievements

近年、時間領域天文学の発達により、突発天体の研究が盛んになっている。コンパクト天体への突発的ガス降着は、大量の重力エネルギーを放射エネルギーとして解放する、宇宙で最も激しい突発現象の中心エンジンである。その中心エンジンの活動性を調べるために最適な天体の一つが矮新星であり、本研究で得られた成果は他の様々な突発天体の研究に応用可能である。

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Published: 2025-01-30  

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