235
the pleasure is known
(lemmy.world)
Tried cleaning it up a bit and inverting
Looks great !
Thanks!
Isn't this an album cover
Joy Division's debut album in 1979... "Unknown Pleasures". Giving some insight into the title of this post.
Ok but what is it?
Like the other amigo said, it's detected emissions from a pulsar. For some more explanation, pulsars spin really fast and emit radio waves, think of it sorta like a lighthouse. So what the image is measuring is the intensity of the radio waves from this pulsar as it spins, with each period stacked in front of the last.
Visual aid from Wikipedia:
As you can see, this one has been simplified to demonstrate the concept, and the actual data is much more varied and interesting to look at; I do not know what causes the peak offsets and would also like an explanation
with each period stacked in front of the last.
Yeah, that part is confusing because the description says
Time increases … toward the top …
Which would mean the oldest pulse is in the foreground.
ahh you're right, I see, a little counter intuitive since going front-to-back would obscure newer data that wont be seen at all, while going back-to-front would only obscure older data
I didn’t know either so I looked it up, apparently it was the first detected radio pulsar, briefly thought to be an extra terrestrial transmission…and later used on Joy Division album cover: https://en.m.wikipedia.org/wiki/PSR_B1919%2B21
didn't know the album cover was from a pulsar. I'd heard a story it was some kind of ECG trace of a heart attack / someone dying.
the rule is not
I actually just watched a VSauce short about this last night.
this post was submitted on 29 Oct 2023
235 points (100.0% liked)
196
16419 readers
1763 users here now
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
founded 1 year ago
MODERATORS