Deep Field writes that the Canadian Hydrogen Intensity Mapping Experiment (CHIME) has released a second catalog containing 4,539 fast radio bursts from 3,641 distinct sources. These observations were collected over more than five years of continuous sky-watching between July 2018 and September 2023 using a unique telescope in British Columbia that features four stationary half-pipe reflectors with no moving parts.
- The telescope uses digital signal processing to form 1,024 beams electronically rather than physically steering dishes.
- Of the detected bursts, 981 originated from 83 known repeating sources.
- Fast radio bursts can be used to map the distribution of diffuse, low-density gas between galaxies by analyzing dispersion measures.
- Magnetars are currently a leading candidate for the physical source of these cosmic explosions.
- The telescope uses digital signal processing to form 1,024 beams electronically rather than physically steering dishes.
- Of the detected bursts, 981 originated from 83 known repeating sources.
- Fast radio bursts can be used to map the distribution of diffuse, low-density gas between galaxies by analyzing dispersion measures.
- Magnetars are currently a leading candidate for the physical source of these cosmic explosions.
The Vera C. Rubin Observatory in Chile is ushering in a new era of big-data astronomy by creating an expansive time-lapse movie of the night sky over the next decade. Preliminary data from the observatory has already revealed fascinating phenomena, including exceptionally fast-rotating large asteroids and early detections of interstellar visitors.
Analysis of 15 years of Fermi LAT data reveals a statistically significant halo-like excess in gamma rays around 20 GeV, potentially originating from dark matter annihilation. The study examines systematic uncertainties and explores implications for WIMP parameters.
Recent findings using AI reveal that Sagittarius A*, the supermassive black hole at the center of the Milky Way, is rotating at near-maximum velocity with its rotation axis pointed directly toward Earth. This discovery, made possible by advanced neural networks and Bayesian statistical approaches, challenges established black hole theories and offers new insights into galactic formation.
Physicists are revisiting the chaotic region near singularities within black holes, utilizing new mathematical tools to potentially reconcile general relativity and quantum mechanics and gain a deeper understanding of space and time.
The SPHEREx mission will observe the entire sky multiple times over its planned two-year mission. It employs Linear-Variable Filter (LVF) technology to capture spectra across 100 spectral bands in the near-infrared spectrum. The mission focuses on exploring the origins of the universe, galaxies, water, and pre-biotic molecules, with a deep survey near the ecliptic poles and an all-sky survey during its mission. SPHEREx aims to achieve deeper sensitivities than 2MASS and meet scientific requirements with margins over instrument performance.
Astrophysicists have detected subtle hints that the mysterious 'dark energy' that drives the universe's expansion may be slightly weakening over time.
In the coming weeks, Symmetry will explore the ways scientists are using artificial intelligence to advance particle physics and astrophysics. This series of articles will be written and illustrated entirely by humans.
- Life's evolution on Earth began with single-celled organisms and evolved into complex life forms through environmental factors and extinction events, culminating in the emergence of mammals and ultimately our own species.
- The article highlights the significance of our species, Homo sapiens, within the grand scheme of things, occurring within the last 300,000 years.
- Despite the limited time our species exists compared to the vastness of cosmic time, it encourages us to consider the potential for future life forms
- The article highlights the significance of our species, Homo sapiens, within the grand scheme of things, occurring within the last 300,000 years.
- Despite the limited time our species exists compared to the vastness of cosmic time, it encourages us to consider the potential for future life forms
