Sorry I mistook radius for diameter.
Holy crap! look what i found!
- Thread starter Gothraga
- Start date
Sorry I mistook radius for diameter.
At >0.5Mbar, it would probably form Superionic_water: glowing yellow crystals (cube lattice, not the usual hexagonal forms).
I found a planet with iron as an atmospheric gas.
Was there supposed to be an image attached? Nothing seems to be there...
ED sometimes make some very odd surface pressure claims on relatively small worlds. Also, an "atmosphere" of 100% water is an ocean, not an atmosphere!
I've seen a lovely Earth-like world orbiting a Neutron star, kinda completely impossible for a number of reasons... (one of which it would have been cooked to a crisp in the prior supernova!)
It probably formed or was captured after the supernova that resulted in the neutron star. Doesn't seem impossible, just extremely unlikely.
A true "Heavy Metal Heaven"
... Pretty warm too, 9K surface temperature... compare to Sun's meager 5.7K or so (ofc in case of stars, it ramps up to millions and then some when you dip *under* the "surface").
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A supernova would basically vapourize all but the outer planets in a system, and the latter neutron star would not have enough IR and light energy output to support life on a nearby planet, and would also most likely be a source of incredibly intense X-rays and Gamma rays, pretty much sterilizing everything near it.
No, not a remotely plausible situation...
I suppose it could have previously occupied a much larger orbit and then moved inwards. But a star shedding mass is going to have less pull at range. But I guess even at a massive orbit it would still be toast in the blast.
Another possibility is that it was a wondering Earth like that got captured by the star?
Rather, a captured planet which became earthlike because of becoming captured.
Loving the superionic water - sounds like a blast.
Aren't NS's only x-ray etc sources as stuff falls onto them? I think as is they just chuck out light/heat if left alone and what more exotic radiation they do put out is from the poles. Off to read some wiki.... it doesn't seem to disagree, where's an astrophysicist when you need one?
Aren't NS's only x-ray etc sources as stuff falls onto them? I think as is they just chuck out light/heat if left alone and what more exotic radiation they do put out is from the poles. Off to read some wiki.... it doesn't seem to disagree, where's an astrophysicist when you need one?
It's going to have one hell of an intense magnetic field, which will accelerate particles to relativistic speeds. I imagine an ELW around a neutron star would have some pretty spectacular aurorae. At lunchtime. At the equator.
Those particles at relativisitic speeds are the ones slamming into the NS, they're not emitted from it in that state far too many G's to get them to that speed in the first place isn't it?
No, neutron stars themselves have incredible "power" output, but most of it is the the form of low-frequency radiation (ultraviolet, x-rays, gamma rays). Due to their (relatively) minuscule size and surface are, the actual output of visible light and IR is negligible. The Earth-like world would have to be in an incredibly close orbit to receive a viable amount of visible and IR energy, but the low-frequency radiation would be a few million or billion times the intensity it is on Earth!
Keep in mind that mass is mass and if a neutron star has 1.5 solar masses the orbital period(s) of any planetary bodies will act in exactly the same manner as if it were a "normal" star.
FYI, a planet cannot support an oxygen-rich atmosphere without some kind of process to continually replenish the oxidation products, in the case of Earth (and similar situations) it is plant/algae photosynthesis that continually generates free oxygen.
The bottom like is that if it's "Earth-like" it's implied that it a carbon-cycle based life with photosynthesis and the carbon dioxide and oxygen exchange. If it uses some "other" totally alien method of carbon/oxygen balance then it's not exactly "Earth-like", is it?
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I think you have your frequencies confused - https://en.wikipedia.org/wiki/Electromagnetic_spectrum - but we see life here using heat or chemical energy to survive already in deep rocks and around ocean vents - there are other options for life than visible light and photosynthesis. We also don't 'see' all the neutron stars as they're not all beaming radio/x-ray at us, we've detected some in visible/IR bands instead. The crazy radiation is from the poles and not necessarily sweeping the planets, I'd imagine that'd be quite rare given the natural order of star spin vs plane of orbiting bodies.
Though you're not wrong it would be a pretty unusual world and it stretches the imagination to work out how it would have worked out but the stellar forge calculator I guess it say yes for now
Though you're not wrong it would be a pretty unusual world and it stretches the imagination to work out how it would have worked out but the stellar forge calculator I guess it say yes for now
Sorry, was thinking "low" on the L/R bar of wavelengths, not frequency!
See; http://www.livescience.com/images/i/000/074/607/i02/em-spectrum.jpg?1426223641Yes, we ourselves are examples of life that do not use photosynthesis, but we and all other animal life could not have evolved, nor cannot exist, without the support of photosynthetic processes creating a oxygen-rich atmosphere (and dissolved oxygen in oceans/fresh water). Chicken & the Egg, and the Egg was initially blue-green algae.
Basically, Stellar Forge gets it wrong quite often. There are no real sanity-checks involved and some of the things it comes up with are completely implausible, if not impossible. It's only an algorithm that spits out semi-random data based on a series of inputs and conditions.
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