GeeKay Posted December 10, 2018 Share Posted December 10, 2018 I am tying up the loose ends of a SF short story I wrote last year, featuring a neutron star. Right now, though, I'm stuck over a long-term problem concerning the star's luminosity. It's surface temperature is 8,200 K and has a diameter of 20 kms. My problem has consisted of trying (and failing) to calculate what the star's absolute magnitude would be. I'm afraid this is beyond my abilities to solve, and unfortunately I don't know anyone among my friends who has the mathematical nous to help me out here. So I would be extremely appreciative if someone here could put me out of my misery. Many Thanks! Link to comment Share on other sites More sharing options...
swansont Posted December 10, 2018 Share Posted December 10, 2018 Luminosity calculator https://www.omnicalculator.com/physics/luminosity Absolute magnitude of 27.43 Link to comment Share on other sites More sharing options...
GeeKay Posted December 11, 2018 Author Share Posted December 11, 2018 swansont - many thanks for your succinct answer to what has been a long-term headache for me. Much appreciated! Link to comment Share on other sites More sharing options...
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