Still image from the numerical simulation at around 1.3Â seconds after the neutron star merger. The contours in blue and green show the density of the matter around the central remnant black hole. The magenta lines show the magnetic field lines and the arrows display the outflow in the magnetosphere (jet). Credit: K. Hayashi / Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
Merging neutron stars are excellent targets for multi-messenger astronomy. This modern and still very young method of astrophysics coordinates observations of the various signals from one and the same astrophysical source. When two neutron stars collide, they emit gravitational waves, neutrinos and radiation across the entire electromagnetic spectrum...
Left: posterior distribution of the chirp mass of the binary in the source frame as a function of the inferred effective inspiral spin parameter. Right: posterior distributions of the mass and the dimensionless spin of the remnant black hole according to the RIFT inference using the NRSur7dq4 model. The two-dimensional plot for both panels shows the 90% credible regions of inference using RIFT with the NRSur7dq4 model. The thick grey and filled black posteriors represent the LVK posterior distributions for GW170502 and GW190521, respectively, with the NRSur7dq4 waveform model. Credit: The Astrophysical Journal Letters (2025). DOI: 10.3847/2041-8213/adc5f8
A series of studies sheds light on the origins and characteristics of intermediate-mass black holes...
Researchers inject an impurity into a one-dimensional ultracold gas, thereby generating a quasiparticle with exotic properties.
Scientists led by Hanns-Christoph Nägerl have observed anyons — quasiparticles that differ from the familiar fermions and bosons — in a one-dimensional quantum system for the first time. The results, published in Nature, may contribute to a better understanding of quantum matter and its potential applications.
Nature categorizes particles into two fundamental types: fermions and bosons. While matter-building particles such as quarks and electrons belong to the fermion family, bosons typically serve as force carriers — examples include photons, which mediate electromagnetic interactions, and gluons, which govern nuclear forces...
An image of the sky showing the region around ASKAP J1832-0911. X-rays from NASA’s Chandra X-ray Observatory, radio data from the South African MeerKAT radio telescope, and infrared data from NASA’s Spitzer Space Telescope. Credit: Ziteng (Andy) Wang, ICRAR
Astronomers from the International Center for Radio Astronomy Research (ICRAR), in collaboration with international teams, have made a startling discovery about a new type of cosmic phenomenon.
The object, known as ASKAP J1832-0911, emits pulses of radio waves and X-rays for two minutes every 44 minutes.
The paper, “Detection of X-ray Emission from a Bright Long-Period Radio Transient,” is published in Nature.
This is the first time objects like these, called long-period transients (LPTs), have been detected in X-rays...
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