Research ArticleOpen AccessGoogle Scholar indexed
Energy Conservation in the Thin-Layer Approximation: V. The Surface Brightness in Supernova Remnants
Physics Department, Via P. Giuria 1, Turin, Italy
- 1 Physics Department, Via P. Giuria 1, Turin, Italy
International Journal of Astronomy and Astrophysics·Volume 11 (2021)·Pages 252–264·Published 26 May 2021·DOI10.4236/ijaa.2021.112013
Copy link · social · email
Abstract
Two new equations of motion for a supernova remnant (SNR) are derived in the framework of energy conservation for the thin-layer approximation. The first one is based on an inverse square law for the surrounding density and the second one on a non-cubic dependence of the swept mass. Under the assumption that the observed radio-flux scales as the flux of kinetic energy, two scaling laws are derived for the temporal evolution of the surface brightness of SNRs. The astrophysical applications cover two galactic samples of surface brightness and an extragalactic one.
KeywordsISM: Supernova RemnantsRadio Continuum: Galaxies
- Shklovskii, I.S. (1960) Secular Variation of the Flux and Intensity of Radio Emission from Discrete Sources. Soviet Astronomy, 4, 243-249.
- van der Laan, H. (1962) Intense Shell Sources of Radio Emission. Monthly Notices of the Royal Astronomical Society, 124, 179-188. https://doi.org/10.1093/mnras/124.2.179
- Gull, S.F. (1973) A Numerical Model of the Structure and Evolution of Young Supernova Remnants. Monthly Notices of the Royal Astronomical Society, 161, 47-69. https://doi.org/10.1093/mnras/161.1.47
- Caswell, J.L. and Lerche, I. (1979) Supernova Remnants—A Generalized Theoretical Approach to the Radio Evolution. Proceedings of the Astronomical Society of Australia, 3, 343-347. https://doi.org/10.1017/S1323358000026503
- Woltjer, L. (1972) Supernova Remnants. Annual Review of Astronomy and Astrophysics, 10, 129-158. https://doi.org/10.1146/annurev.aa.10.090172.001021
- Long, K.S. (2017) Galactic and Extragalactic Samples of Supernova Remnants: How They Are Identified and What They Tell Us. In: Alsabti, A.W. and Murdin, P., Eds., Handbook of Supernovae, Springer, Berlin, 1-36.
- Poveda, A. and Woltjer, L. (1968) Supernovae and Supernova Remnants. Astronomical Journal, 73, 65. https://doi.org/10.1086/110600
- Clark, D.H. and Caswell, J.L. (1976) A Study of Galactic Supernova Remnants, Based on Molonglo-Parkes Observational Data. Monthly Notices of the Royal Astronomical Society, 174, 267-305. https://doi.org/10.1093/mnras/174.2.267
- Huang, Y.L. and Thaddeus, P. (1985) The Sigma-D Relation for Shell-Like Supernova Remnants. Astrophysical Journal, 295, L13-L16.
- Xu, J.W., Zhang, X.Z. and Han, J.L. (2005) Statistics of Galactic Supernova Remnants. Chinese Astronomy and Astrophysics, 5, 165-174. https://doi.org/10.1088/1009-9271/5/2/007
- Kothes, R., Reich, P., Foster, T.J. and Reich, W. (2017) G181.1+9.5, a New High-Latitude Low-Surface Brightness Supernova Remnant. Astronomy & Astrophysics, 597, Article No. A116. (Preprint) https://doi.org/10.1051/0004-6361/201629848
- Vukotic, B., Ciprijanovic, A., Vucetic, M., Onic, D. and Urosevic, D. (2019) Updated Radio Sigma-D Relation for Galactic Supernova Remnants—II. Serbian Astronomical Journal, 199, 23-37. https://doi.org/10.2298/SAJ1999023V
- Hu, Y.P., Zeng, H.A., Fang, J., Hou, J.P. and Xu, J.W. (2019) Theoretical Σ-D Relations for Shell-Type Galactic Supernova Remnants. Journal of Astrophysics and Astronomy, 40, Article No. 7. https://doi.org/10.1007/s12036-019-9574-5