Luminosity, Effective Temperature, Flux and Magnitudes Astrophysics Astrophysics Basics Luminosity, Effective Temperature, Flux and Magnitudes Questions How are quasars, seyfert galaxies, radio galaxies, and normal galactic nuclei related? What is the major observational difference between a Seyfert galaxy and a normal spiral galaxy? How are seyfert galaxies like quasars? Does the Milky Way have an active galactic nucleus? Is it or is it a type 1 or type 2 Seyfert galaxy? Seyfert galaxies are thought to be undergoing very violent processes. Does that mean they are still evolving? How are X-rays used in astrophysics and astronomy? How do x-rays help determine a celestial body's temperature? What range of temperatures can an x-ray distinguish when studying celestial bodies? If x-rays are normally absorbed by the earth's atmosphere, how do astronomers overcome this issue when studying celestial temperatures? What types of objects in space emit x-rays? How are the x-rays detected? What is the temperature of the Sun's core? How do astronomers determine this temperature? How accurate is the figure? What is dense matter? How is dense matter related to temperature? What caused dense matter to exist and proceed to the big bang? Does light have a sound or an audio frequency? What is magnetic reconnection? What causes magnetic reconnection? Why is magnetic reconnection important? How does magnetohydrodynamics work? Why are magnetohydrodynamics studied in astrophysics? How does a Magnetohydrodynamic drive work? Can sound waves travel on moon? Is it possible that we could hear a sound on moon? In a science fiction movie, when a spaceship explodes the vibrations from the shock wave destroy a nearby spaceship. If you were the science consultant for the movie what would your advice be for the producer? If there were to be an explosion in space, given that space is a vacuum and oxygen is absent, what would happen? How does temperature affect the atmosphere and cause weather? What are the uses of a photometer? What is the difference of filter photometer and uv-vis spectrophotometer in terms of absorbance reading factor? What is the technical name for a light intensity meter? What are the units of a photometer? Why sucrose solution is used in calibration of polarimeter? Are there any brown dwarfs optically visible from Earth? With no nuclear reaction occurring, are brown dwarfs visually observable? What makes dwarf stars so bright? What makes the speed of light exactly 299,792,458 metres per second? What is the coldest place in the universe? How does luminosity differ from the brightness of the same object as seen at the earth? Question #b3ccf What is the temperature of Sirius? Astrophysics Basics View all chapters The Electromagnetic Spectrum Blackbody Radiation Luminosity, Effective Temperature, Flux and Magnitudes Blotzmann and Saha Equations Spectral Classification of Stars The Hertzsprung-Russell Diagram Prev Next