منابع مشابه
ASTRONOMY AND ASTROPHYSICS Epochs of Maximum Light and Bolometric Light Curves of Type Ia Supernovae
We present empirical fits to the UBVRI light curves of type Ia supernovae. These fits are used to objectively evaluate light curve parameters. We find that the relative times of maximum light in the filter passbands are very similar for most objects. Surprisingly the maximum at longer wavelengths is reached earlier than in the B and V light curves. This clearly demonstrates the complicated natu...
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Understanding structural colours in nature requires the right set of optical experiments: this is illustrated by a new study on iridescent bird of paradise feathers, which suggests the potential behavioural importance of dynamic colour changes.
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CREOL and Department of Physics, University of Central Florida, Orlando, FL 32816, USA, Department of Physics, National University of Defense Technology, Changsha, Hunan 410073, China, Department of Chemistry, University of Kansas, Lawrence, KS 66045, USA, Department of Applied Physics, Xi’an Jiaotong University, Xi’an, Shanxi 710049, China, Department of Physics, St. Petersburg State Universit...
متن کاملBolometric Light Curves of Supernovae
The thermalized energy from the radioactive decays of Ni and Ni and their daughter nuclides power the light curves of supernovae near maximum light. The bolometric light curve gives us a fundamental understanding of the energy evolution of a supernova explosion and the amount of radioactive nuclides produced. In this review, I will discuss the bolometric evolution of the Type IIp supernovae SN1...
متن کاملLight Echoes in Type Ia Supernovae
Light echoes are a promising tool to probe the environment where SNe Ia explode and an independent source of information on the progenitor’s nature. After giving a brief introduction to the phenomenon we review the two known cases, i.e. SNe 1991T and 1998bu. We then present the results we obtained from the test case of SN 1998es in NGC 632. This object was classified as a 1991T-like event and w...
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ژورنال
عنوان ژورنال: Nature
سال: 2006
ISSN: 0028-0836,1476-4679
DOI: 10.1038/4411056a