| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Rua Santa Adelia 166, Bairro Bangu, BR-09210170 Santo Andre, SP - Brazil
[2] Univ Sao Paulo, Inst Fis, Rua Matao 1371, Cidade Univ, BR-05508090 Sao Paulo, SP - Brazil
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | SOLAR PHYSICS; v. 296, n. 7 JUL 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
We provide a non-adiabatic equation of state of a space plasma based on the kappa distribution. Our formulation generalizes the polytropic gamma index. An analytic expression is deduced for gamma. Then, the equation of state is derived. The model is applied to describe the electron solar wind in the Earth's magnetopause. A relationship between the plasma pressure and electron concentration is fitted by our equation of state. It is found that: (i) the value of the kappa index is slightly larger than its lower limit, 3/2, thereby actually characterizing electrons in the ambient solar wind; (ii) the electron concentration varies between 2 and 4 particles per cubic centimeter at a null electric potential; (iii) the electron temperature varies between 1.1 and 1.5 million degrees kelvin. Further applications of our theory are briefly addressed. (AU) | |
| FAPESP's process: | 18/03211-6 - Non linear dynamics |
| Grantee: | Iberê Luiz Caldas |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/20192-2 - Stability Analysis in Large Aspect Ratio Tokamaks: Current Finite Relaxation due to Electrons Inertia |
| Grantee: | Francisco Eugenio Mendonça da Silveira |
| Support Opportunities: | Regular Research Grants |