Questions tagged [cosmic-ray]

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2answers
70 views

What kind of radiation do supernova remnants emit?

Do supernova remnants emit EM radiation? Moreover can neutrinos be emitted by these remnants?
2
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0answers
36 views

What are the sources of antimatter particles in the magnetosphere?

The PAMELA instrument detected antimatter particles in the Earth's magnetosphere. What are the sources of these particles? The answer to Source of high energy cosmic particles outlines the sources ...
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1answer
148 views

Earth's magnetic field vs. refrigerator magnet

According to this article: The Earth's field ranges between approximately 25,000 and 65,000 nT (0.25–0.65 G). By comparison, a strong refrigerator magnet has a field of about 10,000,000 ...
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0answers
22 views

Did the International Space-Earth Explorer detect cosmic rays other than gamma rays?

In looking at the available datasets described by NASA for the International Space-Earth Explorer, I am only see gamma ray burst data. Was the platform capable of recording cosmic rays other than ...
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0answers
93 views

Are electrons and positrons equal in cosmic rays? [closed]

I think the question here is not answered directly. According to Wikipedia, Of primary cosmic rays, which originate outside of Earth's atmosphere, about 99% are the nuclei of well-known atoms (...
3
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1answer
89 views

Can cosmic rays alone produce noticeable aurorae in bodies far away from the Sun?

Aurorae are caused by energetic particles interacting with planetary atmospheres. Part of this flux comes from the Sun (solar wind) while the rest is cosmic radiation. My main question is: could a ...
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1answer
250 views

Cosmic microwave background radiation: why did it take so long to get here?

I understand that the universe after the big bang was a super dense cloud of elementary particles, and because of this high density was "not transparent" to light. Then, roughly 400.000 years (380....
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1answer
85 views

Can we manipulate cosmic rays?

Is it possible to send data using cosmic rays? Like sending high and low energy cosmic rays, since they can travel farther. And this data can be converted to binary form that can be processed by ...
10
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1answer
29k views

Could this be a cosmic ray hit on my cameras sensor (CMOS, DSLR)?

While taking pictures of the bubble nebula I noticed a very strange artifact on only one of my pictures. It can't be a satellite since its not a straight line and this is a 90s exposure that should ...
3
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1answer
135 views

Source of high energy cosmic particles

Earth receives shower of both solar and cosmic radiations every seconds. The Sun put up a heliosphere around the solar system and thus foreign high energy charged particles could not penetrate easily. ...
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2answers
322 views

Why do not we use optical telescopes to study cosmic rays directly?

HESS, CTA, and VERITAS are used to study cosmic rays. What they receive are optical (maybe very blue) photons. So my question is: Why don't we use optical telescopes to study cosmic rays directly?
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0answers
47 views

What is the furthest object from which fermion rays were detected? [closed]

What is the furthest object from which non-electromagnetic cosmic rays were detected?
3
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1answer
327 views

Which kind of properties can we get for cosmic ray particles hitting on an optical ccd?

It is very common that we meet cosmic ray particles in optical images recorded by CCDs. You can see the "snowflakes" in the hubble images below: Generally we should remove them in order to get ...