**Problem Statement:**If a neutron star has a radius of 13 km and a temperature of \(9.0 \times 10^6 \, \text{K}\), how luminous is it? Express your answer in watts and also in solar luminosity units. **Hint:** Use the relation \[\frac{L}{L_{\odot}} = \left( \frac{R}{R_{\odot}} \right)^2 \left( \frac{T}{T_{\odot}} \right)^4\]Use 5,800 K for the surface temperature of the Sun. The luminosity of the Sun is \(3.83 \times 10^{26} \, \text{W}\).---**Required Calculations:**- **Luminosity in watts:** [Input box]- **Luminosity in solar luminosity units:** [Input box] \(L_{\odot}\)

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Answered: If a neutron star has a radius of 13 km…

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