A) At Solar maximum sunspots might cover up to 0.4% of the total area of the Sun . If the sunspots have a tempreture of 3800k and the surrounding photosphere has a tempreture of 6000K , calculate the fractional change ( as a percentage ) in the luminsity due to the presence of the sunspots . B) A star of the same stellar class as the Sun is observed regulary over many year , and a time series of its biometric apparent magnitude is collected . What would be the signal in this time series which indicated that the star had a magnetic dyname similar to the Sun ? Breifly describe two or three possible sources of other singals which could confuse the interpretation of the data . a)At solar maximum sunspots might cover up to 0.4% of the total area of the Sun. If thesunspots have a temperature of 3800 K and the surrounding photosphere has a tempera-ture of 6000 K, calculate the fractional change (as a percentage) in the luminosity due tothe presence of the sunspots.b) A star of the same stellar class as the Sun is observed regularly over many years, and atime series of its bolometric apparent magnitude is collected.What would be the signal in this time series which indicated that the star had a magneticdynamo similar to the Sun?Briefly describe two or three possible sources of other signals which could confuse theinterpretation of the data.

Introduction We can calculate the luminosity here with the help of Stephan Boltzmann formula as…

Answered: a) At solar maximum sunspots might…

Applications and Investigations in Earth Science (9th Edition)

9th Edition

ISBN:9780134746241

Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Chapter1: The Study Of Minerals

Section: Chapter Questions

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A) At Solar maximum sunspots might cover up to 0.4% of the total area of the Sun . If the sunspots have a tempreture of 3800k and the surrounding photosphere has a tempreture of 6000K , calculate the fractional change ( as a percentage ) in the luminsity due to the presence of the sunspots .

B) A star of the same stellar class as the Sun is observed regulary over many year , and a time series of its biometric apparent magnitude is collected .

What would be the signal in this time series which indicated that the star had a magnetic dyname similar to the Sun ?

Breifly describe two or three possible sources of other singals which could confuse the interpretation of the data .