发布求助
文献互助 智能选刊 最新文献

Bulletin of the Astronomical Society of India最新文献

筛选
英文 中文
Hickson's compact groups of galaxies: Far-infrared enhancement 希克森致密星系群:远红外增强
Bulletin of the Astronomical Society of India Pub Date : 1995-12-15 DOI: 10.1093/MNRAS/277.2.455
V. R. Venugopal
{"title":"Hickson's compact groups of galaxies: Far-infrared enhancement","authors":"V. R. Venugopal","doi":"10.1093/MNRAS/277.2.455","DOIUrl":"https://doi.org/10.1093/MNRAS/277.2.455","url":null,"abstract":"","PeriodicalId":50722,"journal":{"name":"Bulletin of the Astronomical Society of India","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1995-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/MNRAS/277.2.455","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61022686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Magnetic reconnection and particle acceleration in solar flares as revealed by YOHKOH YOHKOH揭示的太阳耀斑中的磁重联和粒子加速
Bulletin of the Astronomical Society of India Pub Date : 1995-09-01 DOI: 10.1007/978-94-011-5220-4_47
T. Kosugi
{"title":"Magnetic reconnection and particle acceleration in solar flares as revealed by YOHKOH","authors":"T. Kosugi","doi":"10.1007/978-94-011-5220-4_47","DOIUrl":"https://doi.org/10.1007/978-94-011-5220-4_47","url":null,"abstract":"","PeriodicalId":50722,"journal":{"name":"Bulletin of the Astronomical Society of India","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1995-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51711774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
Near infrared high angular resolution observations of stars and circumstellar regions by the technique of lunar occultations 用月球掩星技术对恒星和星周区域进行近红外高角分辨观测
Bulletin of the Astronomical Society of India Pub Date : 1993-01-01 DOI: 10.1007/978-94-011-0880-5_72
T. Chandrasekhar, N. Ashok, S. Ragland
{"title":"Near infrared high angular resolution observations of stars and circumstellar regions by the technique of lunar occultations","authors":"T. Chandrasekhar, N. Ashok, S. Ragland","doi":"10.1007/978-94-011-0880-5_72","DOIUrl":"https://doi.org/10.1007/978-94-011-0880-5_72","url":null,"abstract":"","PeriodicalId":50722,"journal":{"name":"Bulletin of the Astronomical Society of India","volume":"21 1","pages":"376-378"},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51650301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Solar neutrino flux variation and its implications 太阳中微子通量变化及其意义
Bulletin of the Astronomical Society of India Pub Date : 1989-06-01 DOI: 10.4006/1.3035857
P. Raychaudhuri
{"title":"Solar neutrino flux variation and its implications","authors":"P. Raychaudhuri","doi":"10.4006/1.3035857","DOIUrl":"https://doi.org/10.4006/1.3035857","url":null,"abstract":"","PeriodicalId":50722,"journal":{"name":"Bulletin of the Astronomical Society of India","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70136447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A unified formula for mass loss rate of O to M stars. O到M恒星质量损失率的统一公式。
Bulletin of the Astronomical Society of India Pub Date : 1988-08-01 DOI: 10.1086/166610
S. Tarafdar
{"title":"A unified formula for mass loss rate of O to M stars.","authors":"S. Tarafdar","doi":"10.1086/166610","DOIUrl":"https://doi.org/10.1086/166610","url":null,"abstract":"A formula for stellar mass-loss rate has been derived using conservation equations of mass and momentum for coronal and continuum radiation-driven wind. The derived mass-loss rate formula has been found to be consistent with the observed mass-loss rates for stars from O to M spectral type. Two constant parameters appearing in the mass-loss rate formula have been found to have values for special group of stars such as Be-stars, which are different from the majority of stars. 24 references.","PeriodicalId":50722,"journal":{"name":"Bulletin of the Astronomical Society of India","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1988-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60533668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Dependence of pulsar characteristics on the space-time metric. 脉冲星特性对时空度规的依赖性。
Bulletin of the Astronomical Society of India Pub Date : 1988-03-01 DOI: 10.1086/166068
V. Bhatia, N. Chopra, B. Majumdar, N. Panchapakesan
{"title":"Dependence of pulsar characteristics on the space-time metric.","authors":"V. Bhatia, N. Chopra, B. Majumdar, N. Panchapakesan","doi":"10.1086/166068","DOIUrl":"https://doi.org/10.1086/166068","url":null,"abstract":"The general relativistic effects on the pulse shapes, arrival times of pulses, and brightness temperatures of fast pulsars are investigated. The Kerr metric is employed for this purpose and the results are compared with those of Kapoor and Datta (1985, 1986), who used the rotationally perturbed spherical metric derived by Hartle and Thorne (1968). It is found that generally the results of Kapoor and Datta need very little modification. However, a difference in the values of deflection angles is found that is due to a different interpretation. More importantly, it is found that the width of the pulse increases, if emitted close to the surface, but decreases, if emitted from further away. This has an important bearing on the estimate of brightness temperatures from observed widths (and related intensity) of the pulsars. 11 references.","PeriodicalId":50722,"journal":{"name":"Bulletin of the Astronomical Society of India","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1988-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60533605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Effect of Spacetime Curvature and Rotation on Arrival Times of Pulses from Fast Pulsars 时空曲率和旋转对快速脉冲星脉冲到达时间的影响
Bulletin of the Astronomical Society of India Pub Date : 1986-12-01 DOI: 10.1086/164806
R. Kapoor, B. Datta
{"title":"Effect of Spacetime Curvature and Rotation on Arrival Times of Pulses from Fast Pulsars","authors":"R. Kapoor, B. Datta","doi":"10.1086/164806","DOIUrl":"https://doi.org/10.1086/164806","url":null,"abstract":"General relativistic effects, due to spacetime curvature and rotation, on the arrival times of pulsar signals are investigated using a rotationally perturbed spherical metric. For the millisecond pulsar PSR 1937 + 214, the advancement in arrival time (assuming the usual polar cap model for emission mechanism and a radius-to-frequency mapping) due to these effects is found to be nontrivial. The results are compared with recent multifrequency timing measurements on PSR 1937 + 214, and the implications regarding emission region thickness and emission mechanism for fast pulsars are discussed. 19 references.","PeriodicalId":50722,"journal":{"name":"Bulletin of the Astronomical Society of India","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1986-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60533041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Radio detection of a 无线电探测
Bulletin of the Astronomical Society of India Pub Date : 1984-01-01 DOI: 10.1007/springerreference_22768
T. Velusamy
{"title":"Radio detection of a","authors":"T. Velusamy","doi":"10.1007/springerreference_22768","DOIUrl":"https://doi.org/10.1007/springerreference_22768","url":null,"abstract":"","PeriodicalId":50722,"journal":{"name":"Bulletin of the Astronomical Society of India","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1984-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"52928438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Scattering of scalar tardyons and tachyons from a Schwarzschild black hole. 史瓦西黑洞中标量延迟子和速子的散射。
Bulletin of the Astronomical Society of India Pub Date : 1982-10-01 DOI: 10.1088/0305-4470/15/10/022
S. Banerji, D. Mandal
{"title":"Scattering of scalar tardyons and tachyons from a Schwarzschild black hole.","authors":"S. Banerji, D. Mandal","doi":"10.1088/0305-4470/15/10/022","DOIUrl":"https://doi.org/10.1088/0305-4470/15/10/022","url":null,"abstract":"The authors have set up the Klein-Gordon equation in the background of the Schwarzschild curved space-time and studied the scattering of radial tardyons and tachyons from a black hole. They also show that black holes of mass below 7*1014 g may contain bound states of tardyons of pion mass which will be unstable on account of the presence of an attractive r-4 term.","PeriodicalId":50722,"journal":{"name":"Bulletin of the Astronomical Society of India","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1982-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/0305-4470/15/10/022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60205022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Global density waves in self gravitating flat disks. 自引力平盘中的全球密度波。
Bulletin of the Astronomical Society of India Pub Date : 1982-01-01 DOI: 10.1086/160608
A. Ambastha, R. Varma
{"title":"Global density waves in self gravitating flat disks.","authors":"A. Ambastha, R. Varma","doi":"10.1086/160608","DOIUrl":"https://doi.org/10.1086/160608","url":null,"abstract":"The problem of global stability and structure of a class of disk models, both cold and ''warm'' against axisymmetric and nonaxisymmetric perturbations has been reconsidered in the form of an eigenvalue problem involving a triply infinite matrix. Some large wavelength (or open), nonaxisymmetric modes are found to stabilize in centrally concentrated disks. Unstable ''leading'' modes of cold disks become, gradually, ''trailing'' as the thermal energy of the disk is increased. The growth rates of short wavelength modes are lowered significantly by pressure effects in warm disks.","PeriodicalId":50722,"journal":{"name":"Bulletin of the Astronomical Society of India","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60532857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信