The Effectiveness of o-H2D+, N2D+, and N2H+ as Evolutionary Tracers in High-Mass Star Formation: An Observational Study
While deuterium fractionation is an established evolutionary tracer in low-mass star formation, its application to high-mass star formation is more complex, and the abundance ratios of o-H2D+, N2D+, and N2H+ may not be reliable evolutionary indicators.
Smoking Gun Evidence for Magnetar Engine in Long-Duration Gamma-Ray Burst 23030307A
GRB 230307A, despite its long duration, likely originates from a compact star merger and provides the first direct observational evidence of a magnetar central engine powering a gamma-ray burst.
大マゼラン雲の超軟X線源 RX J0513.9-6951 の進化の分析：収縮モデルへの疑問
超軟X線源 RX J0513.9-6951 の観測データは、従来の収縮モデルでは説明できない光度とWDの物理的特性間の相関を示しており、雲による光学的厚みと再処理効率の変化を考慮した新しいモデルの必要性を示唆している。
中子星低質量 X 射線雙星中雙千赫茲準週期振盪的輻射機制研究
雙千赫茲準週期振盪（kHz QPOs）的起源可以歸因於吸積盤最內側半徑處產生的雙磁流體動力學（MHD）波引起的雙重擾動，這些擾動通過高溫日冕傳輸並發生康普頓上散射，導致觀測到的 kHz QPOs。
中性子星低質量X線連星における双子キロヘルツ準周期振動の放射メカニズム
中性子星低質量X線連星において観測される双子kHz QPOsは、降着円盤の最内縁で発生する双子MHD波に起因する可能性があり、これらの波はコロナを通って伝播し、コンプトンアップ散乱を通じて観測可能なX線変動を引き起こします。
Radiation Mechanism of Twin Kilohertz Quasi-Periodic Oscillations in a Neutron Star Low-Mass X-ray Binary Explained by a Novel Two-Layer Corona Model
Twin kilohertz quasi-periodic oscillations (kHz QPOs) observed in neutron star low-mass X-ray binaries (NS-LMXBs) can be explained by the interaction of twin MHD waves, generated at the innermost radius of an accretion disc, with a two-layered corona surrounding the neutron star.
Multi-wavelength Analysis of SRGe J194401.8+284452: An X-ray Cataclysmic Variable
SRGe J194401.8+284452 is an intermediate polar cataclysmic variable with an orbital period of about 1.5 hours, exhibiting transitions between high and low luminosity states, and is unlikely to be associated with the gamma-ray source 4FGL J1943.9+2841.
Shadow Images of Ghosh-Kumar Rotating Black Holes: Exploring the Impact of Spherical Light Sources and Thin Accretion Disks
This research paper investigates the visual characteristics of shadows cast by Ghosh-Kumar rotating black holes, revealing how these shadows are affected by the black hole's spin, magnetic charge, and the presence of surrounding light sources like spherical emissions and thin accretion disks.
Analysis of Three Superflares on the Active Binary Star HR 1099 using XMM-Newton Observations
This research paper presents an analysis of three superflares observed on the active RS CVn binary star HR 1099 using XMM-Newton X-ray observations, revealing their temporal and spectral characteristics, providing insights into coronal properties, and highlighting the presence of the inverse-FIP effect.
SRGA J144459.2−604207 clocked bursts 中非太陽元素組成的證據
SRGA J144459.2−604207 的 clocked bursts 顯示出與太陽系不同的元素組成，可能是第一個被確認具有這種特徵的 clocked burster。
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