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International Journal of Modern Physics D最新文献

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Causal thermodynamics of a collapsing self similar radiation shell 坍缩自相似辐射壳的因果热力学
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-08-04 DOI: 10.1142/s0218271823500803
Pretty N Khambule, R. Goswami, S. Maharaj
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引用次数: 0
Shadows near supermassive black holes: from a theoretical concept to GR test 超大质量黑洞附近的阴影:从理论概念到GR测试
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-08-02 DOI: 10.1142/s0218271823400047
A. Zakharov
{"title":"Shadows near supermassive black holes: from a theoretical concept to GR test","authors":"A. Zakharov","doi":"10.1142/s0218271823400047","DOIUrl":"https://doi.org/10.1142/s0218271823400047","url":null,"abstract":"General relativity (GR) passed many astronomical tests but in majority of them GR predictions have been tested in a weak gravitational field approximation. Around 50 years ago a shadow has been introduced by J. Bardeen as a purely theoretical concept but due to an enormous progress in observational and computational facilities this theoretical prediction has been confirmed and the most solid argument for an existence of supermassive black holes in Sgr A* and M87* has been obtained.","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41666151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Fermion localization mechanisms in f(T,𝒯 )-brane f（T，𝒯 )-膜
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-07-21 DOI: 10.1142/s0218271823500748
A. Moreira
{"title":"Fermion localization mechanisms in f(T,𝒯 )-brane","authors":"A. Moreira","doi":"10.1142/s0218271823500748","DOIUrl":"https://doi.org/10.1142/s0218271823500748","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49361730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterizations of Weakly Ricci-Symmetric Spacetimes and f(ℛ)-Gravity 弱Ricci对称时空和f的特征(ℛ)-重力
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-07-21 DOI: 10.1142/s0218271823500724
U. De, Dipankar Hazra
{"title":"Characterizations of Weakly Ricci-Symmetric Spacetimes and f(ℛ)-Gravity","authors":"U. De, Dipankar Hazra","doi":"10.1142/s0218271823500724","DOIUrl":"https://doi.org/10.1142/s0218271823500724","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45773137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In Search of the maximum lost momentum 寻找最大的动量损失
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-07-21 DOI: 10.1142/s0218271823420166
C. Lousto, J. Healy
{"title":"In Search of the maximum lost momentum","authors":"C. Lousto, J. Healy","doi":"10.1142/s0218271823420166","DOIUrl":"https://doi.org/10.1142/s0218271823420166","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42710462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stability analysis of f(Q) gravity models using Dynamical Systems 用动力系统分析f（Q）重力模型的稳定性
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-07-13 DOI: 10.1142/s0218271823500712
Pooja Vishwakarma, Parth Shah
{"title":"Stability analysis of f(Q) gravity models using Dynamical Systems","authors":"Pooja Vishwakarma, Parth Shah","doi":"10.1142/s0218271823500712","DOIUrl":"https://doi.org/10.1142/s0218271823500712","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47209407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal radiation of thin accretion disk around Taub-NUT black hole Taub NUT黑洞周围薄吸积盘的热辐射
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-07-10 DOI: 10.1142/s0218271823500645
Bakhtiyor Narzilloev, B. Ahmedov
{"title":"Thermal radiation of thin accretion disk around Taub-NUT black hole","authors":"Bakhtiyor Narzilloev, B. Ahmedov","doi":"10.1142/s0218271823500645","DOIUrl":"https://doi.org/10.1142/s0218271823500645","url":null,"abstract":"The effects of a gravitomagnetic charge on the thermal radiation properties of a thin accretion disk surrounding a non-rotating black hole are studied. The studied system consists of a non-rotating black hole with a non-zero gravitomagnetic charge and a Novikov–Thorne disk that is thin and optically thick. It is found that the gravitomagnetic charge enhances the gravitational field of the central black hole, resulting in an increase in the event horizon and innermost stable circular orbit (ISCO) radii. However, the maximum flux of radiant energy from the accretion disk is reduced and shifted outward from the central object due to the effect of the gravitomagnetic charge. The thermal profile of the accretion disk also exhibits a similar dependence on the radial coordinate and the gravitomagnetic charge of the black hole. The radiative efficiency of the accretion disk decreases from around 6% to approximately 2% with an increase in the value of the gravitomagnetic charge by [Formula: see text]. The thermal spectra of the accretion disk are also shifted towards lower frequencies, corresponding to the gravitational redshift of electromagnetic radiation coming from the disk, with an increase in the value of the gravitomagnetic charge. One may conclude that the effect of the gravitomagnetic charge is opposite to the effect of black hole spin.","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41510986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Essay written for the Gravity Research Foundation 2023 Awards for Essays on Gravitation The Virial Theorem for Retarded gravity 为引力研究基金会2023年引力论文奖撰写的论文。迟钝引力的维里定理
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-07-07 DOI: 10.1142/s0218271823420130
A. Yahalom
{"title":"Essay written for the Gravity Research Foundation 2023 Awards for Essays on Gravitation The Virial Theorem for Retarded gravity","authors":"A. Yahalom","doi":"10.1142/s0218271823420130","DOIUrl":"https://doi.org/10.1142/s0218271823420130","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46667066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The sound of the event horizon 视界的声音
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-07-07 DOI: 10.1142/s0218271823420142
R. Konoplya
{"title":"The sound of the event horizon","authors":"R. Konoplya","doi":"10.1142/s0218271823420142","DOIUrl":"https://doi.org/10.1142/s0218271823420142","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47383519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Event horizon detection: Zenith view as seen by falling into a Schwarzschild black hole 视界探测：落入史瓦西黑洞的天顶视图
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-07-04 DOI: 10.1142/s0218271823500700
Y. Iida
{"title":"Event horizon detection: Zenith view as seen by falling into a Schwarzschild black hole","authors":"Y. Iida","doi":"10.1142/s0218271823500700","DOIUrl":"https://doi.org/10.1142/s0218271823500700","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44632297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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