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Search results for supernovae

Astronomy 5 hours ago

Astronomers discover dozens of double-lined double white dwarf binaries

An international team of astronomers reports the discovery of 34 rare double-lined double white dwarf binary systems using the Intermediate-dispersion Spectrograph and Imaging System (ISIS) on the William Herschel Telescope ...

Astronomy Jul 9, 2024

We need to consider alternatives to dark matter that better explain cosmological observations

Do constants of nature—the numbers that determine how things behave, like the speed of light—change over time as the universe expands? Does light get a little tired traveling vast cosmic distances? It was believed that ...

Astronomy Jul 8, 2024

Researchers predict new phase in neutron stars that favors 'nuclear pasta'

Neutron stars are extreme and mysterious objects that astrophysicists cannot see inside. With a radius of around 12 kilometers, they can have more than twice the mass of the sun. The matter in them is packed up to five times ...

Astronomy Jul 5, 2024

Elusive temporary star described in historical documents recreated using new computer model

A mysterious remnant from a rare type of supernova recorded in 1181 has been explained for the first time. Two white dwarf stars collided, creating a temporary "guest star," now labeled supernova (SN) 1181, which was recorded ...

Astronomy Jul 2, 2024

Cosmic simulation reveals how black holes grow and evolve

A team of astrophysicists led by Caltech has managed for the first time to simulate the journey of primordial gas dating from the early universe to the stage at which it becomes swept up in a disk of material fueling a single ...

Astronomy Jul 2, 2024

German scientists investigate supernova remnant SNR G309.8+00.0 at high energies

Using Spektr-RG and Fermi space observatories, German astronomers have investigated the supernova remnant SNR G309.8+00.0 in X-rays and gamma rays. Results of the new study, presented June 25 on the preprint server arXiv, ...

Astronomy Jul 1, 2024

Research intern helps discover a new pulsar buried in a mountain of data

U.S. Naval Research Laboratory (NRL) Remote Sensing Division intern Amaris McCarver, along with a team of astronomers, has discovered the first millisecond pulsar in the stellar cluster Glimpse-CO1 and recently published ...

General Physics Jun 26, 2024

Experiment captures atoms in free fall to look for gravitational anomalies caused by dark energy

Dark energy—a mysterious force pushing the universe apart at an ever-increasing rate—was discovered 26 years ago, and ever since, scientists have been searching for a new and exotic particle causing the expansion.

Astronomy Jun 26, 2024

Study reveals twisted origin of dead stars' mysterious 'heartbeats'

Stars blinking code in Netflix's "3 Body Problem" might be science fiction, but by deciphering neutron stars' erratic flickers, a new study has revealed the twisted origin of these dead stars' mysterious "heartbeats."

Quantum Physics Jun 22, 2024

Untangling the entangled: Quantum study shines fresh light on how neutrinos fuel supernovae

Researchers used quantum simulations to obtain new insights into the nature of neutrinos—the mysterious subatomic particles that abound throughout the universe—and their role in the deaths of massive stars.

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