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超新星SN1993J的光谱观测
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作者 胡景耀 姜晓军 李爱根 《紫金山天文台台刊》 北大核心 1994年第1期64-64,T004,共2页
SN1993J was first discovered by a Spanish amateur astronomer F. Garcia in NGC3031 (M81) on March 28, 1993. It's the closest supernova in the northern hemisphere since 1937. Because of its many special properties, ... SN1993J was first discovered by a Spanish amateur astronomer F. Garcia in NGC3031 (M81) on March 28, 1993. It's the closest supernova in the northern hemisphere since 1937. Because of its many special properties, it drove attentions of astronomers when it was discovered. 展开更多
关键词 超新星 光谱观测 sn1993j
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超新星SN1993J光谱出现了精细结构
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作者 胡景耀 李爱根 《科学通报》 EI CAS CSCD 北大核心 1994年第11期1054-1055,共2页
理论上预言,Ⅱ型超新星在爆发过程中可能产生不稳定性,出现不对称结构.SN1987A首次提供了这方面直接的观测证据.SN1993J的不对称爆发也证实了这一点.1993年7月12日我们利用北京天文台2.16m望远镜得到的低色散光谱(5.3(?)/象素)的[OI]线... 理论上预言,Ⅱ型超新星在爆发过程中可能产生不稳定性,出现不对称结构.SN1987A首次提供了这方面直接的观测证据.SN1993J的不对称爆发也证实了这一点.1993年7月12日我们利用北京天文台2.16m望远镜得到的低色散光谱(5.3(?)/象素)的[OI]线和Hα线出现许多精细结构。 展开更多
关键词 超新星 sn1993j 精细结构
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超新星1993J的UBVRI多色测光
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作者 周旭 郑中原 吴宏 《天体物理学报》 CSCD 1993年第3期295-296,共2页
利用北京天文台兴隆站60/90cm施密特望远镜上的2048×2048CCD照相机对超新星1993J爆发的第二次极大进行了UBVRI五色测光.
关键词 超新星 sn1993j 测光 望远镜
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Energy Conservation in the Thin Layer Approximation: IV. The Light Curve for Supernovae 被引量:1
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作者 Lorenzo Zaninetti 《International Journal of Astronomy and Astrophysics》 2021年第1期37-58,共22页
The light curves (LC) for Supernova (SN) can be modeled adopting the conversion of the flux of kinetic energy into radiation. This conversion requires an analytical or a numerical law of motion for the expanding radiu... The light curves (LC) for Supernova (SN) can be modeled adopting the conversion of the flux of kinetic energy into radiation. This conversion requires an analytical or a numerical law of motion for the expanding radius of the SN. In the framework of conservation of energy for the thin layer approximation, we present a classical trajectory based on a power law profile for the density, a relativistic trajectory based on the Navarro-Frenk-White profile for the density, and a relativistic trajectory based on a power law behaviour for the swept mass. A detailed simulation of the LC requires the evaluation of the optical depth as a function of time. We modeled the LC of SN 1993J in different astronomical bands, the LC of GRB 050814 and the LC GRB 060729 in the keV region. The time dependence of the magnetic field of equipartition is derived from the theoretical formula for the luminosity. 展开更多
关键词 Supernovae: General Supernovae: (Individual: sn1993j) Gamma-Ray Burst: (Individual: GRB 050814) Gamma-Ray Burst: (Individual: GRB 060729)
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Energy Conservation in the Thin Layer Approximation: III. The Spherical Relativistic Case for Supernovae 被引量:1
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作者 Lorenzo Zaninetti 《International Journal of Astronomy and Astrophysics》 2020年第4期285-301,共17页
The theory of the conservation of energy in the thin layer approximation has been extended to special relativity. Four models for the density of the circumstellar medium are analyzed, which are represented by constant... The theory of the conservation of energy in the thin layer approximation has been extended to special relativity. Four models for the density of the circumstellar medium are analyzed, which are represented by constant, power law, exponential and Emden (<em>n</em> = 5) profile for density. The astrophysical results are presented in a numerical way, except for a Taylor expansion of the four trajectories in the surrounding of the origin. The free parameters of the models are particularized for SN1993j, for which the radius versus time is known. Some evaluations on the time dilation are presented. 展开更多
关键词 Supernovae: General Supernovae: Individual (sn1993j) ISM: Supernova Remnants
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超新星1993J研究
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作者 胡景耀 王力帆 +1 位作者 姜晓军 李宗伟 《天体物理学报》 CSCD 1993年第3期297-298,共2页
本文给出北京天文台2.16m望远镜SN1993J光谱观测结果.
关键词 超新星 1993J 光谱
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Relativistic Motion with Viscosity. I Newton’s Law of Resistance
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作者 Lorenzo Zaninetti 《International Journal of Astronomy and Astrophysics》 2021年第3期435-444,共10页
The equation of motion for a relativistic neutral particle that moves in a medium characterized by a friction proportional to the square of the velocity is analyzed. The relativistic trajectory is derived in a numeric... The equation of motion for a relativistic neutral particle that moves in a medium characterized by a friction proportional to the square of the velocity is analyzed. The relativistic trajectory is derived in a numerical way and in the form of a Taylor series. The astrophysical applications cover the trajectory of SN 1993J and the light curve of gamma ray bursts. 展开更多
关键词 SUPERNOVAE General SUPERNOVAE (Individual: sn1993j) Gamma-Ray Burst (Individual: GRB 130427A) Gamma-Ray Burst (Individual: GRB 060729)
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Relativistic Motion with Viscosity: II Stokes’s Law of Resistance 被引量:1
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作者 Lorenzo Zaninetti 《International Journal of Astronomy and Astrophysics》 2021年第4期481-488,共8页
The deduction of a relativistic and mildly relativistic equation of motion in the presence of a drag force proportional to the velocity is presented. The obtained results are used to model the trajectory of the supern... The deduction of a relativistic and mildly relativistic equation of motion in the presence of a drag force proportional to the velocity is presented. The obtained results are used to model the trajectory of the supernova SN1993J and the light curves of gamma-ray bursts. 展开更多
关键词 SUPERNOVAE General Supernovae Individual (SN 1993J) ISM Supernova Remnants GRB Individual (GRB 130427A) GRB Individual (GRB 120521C) GRB Individual (GRB 130606A)
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