SNR 0509-67.5 Double Explosion of a White Dwarf

Oktay74tn

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SNR 0509-67.5 Double Explosion of a White Dwarf
Oktay Yürük aka Oktay74tn, science and tech content
https://imgur.com/user/Oktay74tn

This image was taken with the MUSE (Multi-Unit Spectroscopic Explorer) instrument of the Very Large Telescope VLT. It shows the supernova remnant SNR 0509-67.5 from a double-detonation 300 to 350 years ago. This is the first double explosion observed. The two concentric blue shells contain calcium.

This is an optical and X-ray composite image of SNR 0509. The supernova remnant is located in the Large Magellanic Cloud LMC 160,000 light years away.

A Type Ia supernova occurs in binary systems with at least one white dwarf. The companion can be a star or another white dwarf. Matter is accreted by the white dwarf. Near the Chandrasekhar limit of 1.44 solar masses, the white dwarf explodes due to runaway fusion reactions.

SNR 0509 is a sub-Chandrasekhar double-detonation. The white dwarf forms a blanket of accumulated helium, which becomes unstable and ignites. The shockwave from the first explosion travels around the white dwarf and inwards. That triggers the second supernova explosion.

The picture at the left shows the ionized calcium double shell of the supernova remnant. The picture at the right is from a simulation. A spectrum was taken from the region within the small rectangle.

The spectral features of SNR 0509 show lines of several ionized states of iron, calcium, sulfur and possibly nickel. The narrow signals are Balmer lines of hydrogen from the forward shock.

HM Cancri is a binary system of two white dwarfs 1600 light years away. The two white dwarfs are 80,000 kilometers (49710 miles) apart. They lose orbital energy due to gravitational waves. In such a system, there could be a quadruple detonation.

Supernovae are essential for life. They have distributed the metal-rich material from previous generations of stars throughout the galaxy. That is the origin of the calcium in the bones or the iron in the blood. 4.6 billion years ago, the solar system was formed from this material.

This version of the periodic table shows the origin of every chemical element.
https://commons.wikimedia.org/wiki/File:Nucleosynthesis_periodic_table.svg

White dwarf series
Gaia22ayj Accreting White Dwarf
https://imgur.com/gallery/gaia22ayj-accreting-white-dwarf-voqhO8N

Decay of the Universe in 10 to the 78 Years
https://imgur.com/gallery/decay-of-universe-10-to-78-years-lsPUQLo

Check out https://imgur.com/user/Oktay74tn for many more astronomy and technology videos.

milky_way

astronomy

galaxy

universe

nature_is_awesome

RooGryphon

Get those deathstars!

2 months ago |

Lwssyx

Muito interessante isso.

Iaimtomisbehave

". . . You better move over, here comes a Supernova! . . ."(B-52's) This is an image of the Very Large Telescope that took the above image. It is located at the European Southern Observatory down in Chile. The laser beam we see being emitted from the array "blasts" dust and particulates out of the way to assure a clear image. It also provides a vertex point for the other survey telescopes that are used in conjunction with the VLT.

derrymerbles

@op every time you include the “decay of the universe” link with these, it feels like a countdown clock and I just wanted you to know that I’m here for it! Also, beautiful post as always. Double beautiful in fact, because I’m laying in bed on vacation this morning and was trying to decide if I was going to drive 25 mins to a bagel shop and this video sealed the effin deal!

Thank you very much :) .

gablestout

akodorokku

You can't fool me, that's the One Ring

There is a sulfur shell between the two calcium shells. Check out Fig. 3 and 4 of https://www.nature.com/articles/s41550-025-02589-5 .

z4zen

I really enjoy the content but
I cant square the accent. Is it possible to add subs? I know you giving out awesome information, but it blends in with whooshing in my ears and i dot get all the info. Love you man. Just asking for a leg up so i can be on the level.

Hi, the entire text is in the description field.

Oh. I’m a moron. Thanks!

UncleScarwasright

that still only counts as one!

knottyboy26

We are made of stardust!

helveticar

Just saw the image and instantly thought of the Sol Gate from The Expanse.

UnitConversionBot

160,000 light years ≈ 941000000000000000 miles

DamnThursdays

This is imgur. In bananas please you profound heathen.

1600 light years ≈ 9410000000000000 miles

jdoc5

So pack some snacks!

tinyCabbage

its beautiful

Yes, it is very beautiful :) .

bhobby1212

This happened 160 thousand years ago. Around 160,000 years ago, the Earth was in the Pleistocene epoch, characterized by alternating glacial and interglacial periods, and Homo sapiens idaltu, an early form of modern humans, were living in what is now Ethiopia. This period also falls within the time frame of the Last Glacial Maximum, which peaked around 26,500 years ago and saw extensive ice sheets covering much of the Northern Hemisphere, significantly impacting the 1/2

Earth's climate and the distribution of life.

While Homo sapiens originated in Africa, this period predates the major migrations out of Africa that would lead to the global peopling of continents, which began later. Early humans were primarily hunter-gatherers, with little evidence of settled civilizations at this time

2/2

I find the population bottleneck situation in human history fascinating. During that time, the total number of humans was just about 2000. We are all descendants of these people from Africa https://en.wikipedia.org/wiki/Population_bottleneck .

With the way the economies are interlocked the extinction population is so much higher than it was 100 years ago. Think about all of the people you know, do you think anyone knows black smithing?

ItHappenedInThe20thCentury

Everything about this is amazing, but I'm baffled by the two white dwarves orbiting each other at only 80,000 km. That is just twice the circumference of the Earth, and typical white dwarves are about Earth-size. That's like having another Earth orbiting us nearly *5 times closer* than the moon. And they're both about as massive as the Sun.

Completely bonkers.

Cactus21

It does get confusing! https://media4.giphy.com/media/v1.Y2lkPTY1YjkxZmJlb2tuOHdxeWpjZWRqbzFhYWRwcmRkN2xzamM3NTFidHJodzYyeWhwdiZlcD12MV9naWZzX3NlYXJjaCZjdD1n/7FgDseZw8Zw9Gi0OMk/giphy.mp4

friendsofsandwiches

They probably didn't start out that way, but they kept bleeding off orbital energy, and got closer and closer, till physics said 'fuck this noise' and they blew up. Usually that's how you get biggie black holes.

Well those two haven't blown up yet, but the tension is PALPABLE

tentacularfleshscape

Oh you get close you'll fuckin palp it alright

Comments (29)