Questions regarding the emission of high energy particles or waves from astrophysical sources.
Radiation is the emission of energy as electromagnetic waves or as moving subatomic particles, esp. high-energy particles that cause ionization.
Questions tagged [radiation]
102 questions
7
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Why does sychrotron radiation only involve relativistic electrons?
I'm reading this chapter of Essential Radio Astronomy.
It says that we can divide bremsstrahlung into electric or magnetic breaking radiation, depending on which field is the source of the acceleration of electrons. Synchrotron radiation is another…
Loika
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5
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1 answer
Conceptual Doubt regarding the calculation of the Solar Constant
The Solar constant is the intensity of the solar radiation in the
upper atmosphere. It's value is about $1400$ $Wm^{-2}$.
Now we begin by stating that the Power radiated by the sun is about $3.9*10^{26}$W. Then we using the Formula…
Student
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3
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2 answers
Distinction between signal from terrestrial and signals from celestial sources
How is it confirmed that a radiation source (not in visible light) is either terrestrial or celestial?
If in-depth explanation and/or references are possible, I would be grateful.
user30981
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3
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1 answer
How much heat is generated from waxing and waning of reflected radiation from the Sun?
According to this article, the greatest cause of global warming would be from the waxing and waning of reflected radiation from the Sun. (Placing carbon emissions at 10-20%) So really, how much heat is generated from the process that stays on Earth?…
CipherBot
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2
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The result of my calculation gives too much error, how to solve it?
NOTE: At the end of my post the output is shown as a list of tuples. The first value in each tuple is the result and the second value is the estimated error on that result. Near the end, the estimated error is of order one part per thousand of the…
Shayu xiao
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1 answer
How far away from the sun would I have to be for radiation not to kill me?
If I were freely floating in space within our solar system, and nothing could kill me but radiation from the Sun, what would be the safe distance? I know that Earth´s distance from the Sun would be lethal and I read somewhere that Mars isn´t very…
Jorge Al Najjar
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americium 241 gamma source
the EPA, and Wikipedia state that Americium-241 decays mainly by alpha radiation. But the equation of decay implies that a gamma ray is produced for every alpha particle produced.
Is that the case? This would make the isotope an equal source of…
dkmax
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