astronomy-and-astrophysics3.82 min read
Magnetar wobble could power the universe's brightest supernovae
1 month ago•Source: Nature
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3.685 min•2 years ago
Unraveling the Enigma of Fullerenes in Space
A study from the Instituto de Astrofísica de Canarias has shown that hydrogenated amorphous carbon (HAC) grains can participate in the formation of fullerenes, complex carbon molecules crucial for life development in the universe and potential nanotechnology applications. Spectroscopic analysis of the planetary nebula Tc1 revealed the presence of HAC, suggesting that fullerenes may have formed during the destruction of dust grains by energetic ultraviolet radiation. This interdisciplinary research opens the door for future collaborations between laboratory chemistry and astrophysics to advance our understanding of astrophysical and astrochemical processes.
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"eROSITA Unveils Largest X-ray Sky Survey Catalog with 900,000 High-Energy Cosmic Sources"
The German eROSITA consortium has released the largest X-ray catalog ever published, containing about 900,000 distinct sources from the first eROSITA All-Sky Survey (eRASS1). The data, which includes scientific papers describing new results, will revolutionize our knowledge of the universe at high energies. The catalog covers half the X-ray sky and includes supermassive black holes, X-ray-emitting stars, clusters of galaxies, and other exotic sources. The release also provides images of the X-ray sky, individual photon lists, and software for data analysis, with cosmology results expected in approximately two weeks.
"Unbalanced Galaxies Illuminate Dark Matter's Velocity"
Researchers have developed a method to calculate the forces affecting galaxies in tidal cycles, aiming to find lopsided galaxies in the universe to study the velocity of dark matter relative to the galaxies. The speed of dark matter can be measured by observing how galaxies affect the trajectory of dark matter particles as they pass by, causing a phenomenon called dynamical friction. Identifying lopsided galaxies isolated from other influences is crucial for accurately measuring the velocities of dark matter, which could provide valuable insights for testing new dark matter models and understanding the nature of dark matter.