Such lazy misuse of language.
The supernova part of the energy equation is a transformation not a death. What's left behind is the womb of the event after a long gestation.Such lazy misuse of language.
Saying a "supernova is born" is like saying a corpse is born when its living heart stops.
A supernova is the catastrophic result of the iron death of a star.
Actually, what's left behind is a womb in which a whole new generation of stars and planets will gestate.The supernova part of the energy equation is a transformation not a death. What's left behind is the womb of the event after a long gestation.
Actually what's left behind is a neutron star or a black hole that doesn't contribute much to the universe except electromagnetic waves..Actually, what's left behind is a womb in which a whole new generation of stars and planets will gestate.
You mean new stars and possibly planets, no?...to form new planets and possibly stars.
Unlikely.As I understand it elements such as gold are synthesized in a supernova.
Be a bit more precise, please.Unlikely.
Duh.We have measured spectral lines of much heavier elements than iron in our sun.
Some light reading...Duh.
Our earth is accreted from the same material that makes up our sun (less the H2 and He that escaped during the accretion process). Of course one would expect heavy elements in the sun. That doesn't mean they were formed there -- just as they weren't formed on earth.
The current thinking after analyzing the most recent data is that the vast majority (heavy metal r-process) is from Neutron stars not directly from the Supernova event r-process process.Be a bit more precise, please.
According to the article, heavy elements -- including gold -- are produced by supernova explosions, just not in quantities large enough to account for the amount of material that actually exists. Neutron star collisions account for most of the material.
https://www.ligo.org/science/Publication-GW170817Kilonova/index.phpThe answer, many astronomers believe, will end up being some kind of compromise. That shift may already be happening. “R process is really not r process anymore now,” Frebel said. Maybe it can be broken in half, with the “weak” r-process elements lighter than barium coming from supernovas, and the heavier ones like gold coming from neutron star collisions.
The rapid neutron capture process, or r-process, is one channel through which elements heavier than Iron can be created, and it has been suggested that previous NS mergers could have been the source of the r-process elements we see in the galaxy today, including all the ones we have here on Earth. Supernovae are also expected to contribute to these abundances, though it is unknown if supernovae or NS mergers are the dominant r-process site. If NS mergers are to account for all the r-process elements observed, they must eject substantial r-process matter and have a relatively high rate of occurrence in the Universe. From our GW data on GW170817, we get constraints on both the ejecta mass and the NS merger rate, which can then be used to estimate the NS merger contribution to r-process abundances. Assuming that all NS mergers have properties like those inferred from GW170817, we find that if >~10% of the dynamically ejected mass is converted to r-process elements, NS mergers could account for all the observed r-process abundances. Future observations of GWs from NS mergers will help solve the longstanding mystery of where the majority of r-process elements are created.
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by Jake Hertz
by Jake Hertz
by Jake Hertz