# Research

### Mass-Radius Relation of Neutron Stars

• I have tested the validity of the RNS v2.0 code for ($n = 1$) polytropic case with the central mass density is $1.0 \times 10^{13} \text{g/cm}^{3}$. It turned out to be a good agreement with the Lane-Emden solution.

# Study

### English

• I have studied 29 words, 25 sentences, and 2 TOEFL essays using Anki.