I Are Stars Absorbing and Re-Emitting Radiation from Space?

AI Thread Summary
Stars do absorb radiation from space, but their primary emission comes from internal processes rather than absorbed energy. The absorbed radiation is mixed with the energy generated internally, making it indistinguishable in the emitted light. While stars are not perfect blackbodies, they do interact with surrounding radiation. This absorption contributes to their overall energy output, but is not the main source of their luminosity. The complexities of stellar radiation involve both absorption and internal generation, leading to confusion about their emission characteristics.
nmsurobert
Messages
288
Reaction score
36
Ive been reading about it for a while and I'm still confused.

i understand that a star is not a perfect blackbody. but do stars absorb radiation from space and then re-emit that energy into space?
 
Astronomy news on Phys.org
Stars can absorb radiation from space. By far the dominant emission is from interal generation. Any absorbed radiation is mixed in. There is no way to distinguish the emission of absorbed radiation from that internally produced.
 
  • Like
Likes nmsurobert

Thread 'Does it make sense to build new radio telescopes?'

TL;DR Summary: In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect alien signals, it will further expand the radius of the so-called silence (or rather, radio silence) of the Universe. Is there any sense in this or is blissful ignorance better? In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect...
View full post »
Thread 'Could gamma-ray bursts have an intragalactic origin?'

Thread 'Could gamma-ray bursts have an intragalactic origin?'

This is indirectly evidenced by a map of the distribution of gamma-ray bursts in the night sky, made in the form of an elongated globe. And also the weakening of gamma radiation by the disk and the center of the Milky Way, which leads to anisotropy in the possibilities of observing gamma-ray bursts. My line of reasoning is as follows: 1. Gamma radiation should be absorbed to some extent by dust and other components of the interstellar medium. As a result, with an extragalactic origin, fewer...
View full post »

Similar threads

I Assumptions for blackbody spectra vs. emission spectra vs. absorption spectra
Replies
8
Views
4K
I How is there any pressure at all in isotropic radiation?
Replies
20
Views
2K
B Can Neutron Stars Lose Energy Through Radiation?
Replies
10
Views
2K
I Why don't red dwarf stars emit white light like the Sun?
Replies
9
Views
4K
I Nuclear reactions in the Sun and other topics on stars
Replies
49
Views
5K
I Why are continuously emitting radio pulsars not detected?
Replies
30
Views
384
I Why Does Gravity Remain when Star Mass Dissipates?
Replies
10
Views
2K
Blackbody Radiation and the Inverse Square Law
Replies
14
Views
4K
I Why does the core collapse happen so fast in a supernova?
Replies
3
Views
3K
Stargazing What do stars actually look like from up close?
Replies
2
Views
3K

Hot Threads

Recent Insights

Back
Top