We find that all the core collapse supernovae that we have studied are associated with vigorous star formation in the recent past. Stars more massive than 21.5Msun are very scarce around SNR N49, implying that the magnetar SGR 0526-66 in this SNR was either formed elsewhere or came from ...
Recent three-dimensional computer simulations suggest thatneutrinos— very low mass subatomic particles — made in the creation of the neutron star drive bubbles that speed away from the center of the explosion. These bubbles continue driving the shock wave forward to trigger the supernova explosi...
Betelgeuse is known for being a type of "variable star," meaning its brightness fluctuates, at times dramatically, as it inches toward an eventual grandiose collapse and stellar explosion, known as a supernova. In recent years, the star has grown noticeably brighter....
And for a star to go supernova, it must be quite massive — at least eight times the size of the sun. But for a supernova to produce the strongest type of gamma-ray burst, the star must be 30 to 40 times the size of the sun. This recent powerful detection came from such a ...
(and hence dark energy) was originallydiscoveredin 1998 by looking at the receding light of distant supernovae, yet the precise mechanism behind a supernova explosion itself is unknown. Few doubt the dark-energy interpretation of those supernovae observations now, of course, but that’s mostly...
These superenergized particles cannot travel those great distances without slowing down significantly. So perhaps their origins are much closer to home. And perhaps their origins are much more exotic than a mere cosmic explosion. In a recent paper that has not yet been peer-r...
Due to its mass, this white dwarf might evolve further into a neutron star, which is almost as dense as a black hole and usually forms from a supernova explosion. “This is highly speculative, but it’s possible that the white dwarf is massive enough to further collapse into a neutron ...
recent site of massive star formation within 30 ′′ , making a second generation of massive stars in its vicinity rather unlikely. 4 Figure 2. Local luminosity functions for 16 randomly chosen test fields (8 closer to the core and 8 farther out than the “sphere”) and the emission li...
The element gold is a pirate's booty and an ingredient in microcircuits. It's been used to make jewelry since at least 4000 B.C. and to treat cancer only in recent decades. It's in the pot at the end of the rainbow and in the coating on astronaut visors. Gold is an element that...
According to a report from NBC News last month, and a recent report Bloomberg last week, X often failed to show Community Notes fact-checks on viral posts spreading falsehoods in a timely manner. The amount of time it takes for a Community Note to appear on a post was a central piece ...