Results 121 to 130 of about 36,281 (219)

Stellar contributions to the hard X-ray galactic ridge [PDF]

open access: yes
The number density of serendipitous sources in galactic plane Einstein Observatory IPC fields are compared with predictions based on the intensity of the HEAO-1 A2 unresolved hrd X-ray galactic ridge emission. It is concluded that theoretically predicted
Marshall, F. E., Worrall, S. M.
core   +1 more source

MUSEQuBES: Unveiling Cosmic Web Filaments at z ≈ 3.6 through Dual Absorption and Emission Line Analysis

open access: yesThe Astrophysical Journal Letters
According to modern cosmological models, galaxies are embedded within cosmic filaments, which supply a continuous flow of pristine gas, fueling star formation and driving their evolution. However, due to their low density, the direct detection of diffuse
Eshita Banerjee   +4 more
doaj   +1 more source

First Mapping of Prebiotic Molecule CH2NH in a Prestellar Core

open access: yesThe Astrophysical Journal Letters
We present the first spatially resolved map of methanimine (CH _2 NH) in the prestellar core L1544 using the IRAM 30 m telescope. The 2 _0,2 –1 _0,1 line at 127 GHz was mapped with 20″ resolution (∼2800 au), revealing extended CH _2 NH emission across ...
Yuxin Lin   +4 more
doaj   +1 more source

The Polar Vortex Hypothesis: Evolving, Spectrally Distinct Polar Regions Explain Short- and Long-term Light-curve Evolution and Color–Inclination Trends in Brown Dwarfs and Giant Exoplanets

open access: yesThe Astrophysical Journal Letters
Recent studies revealed viewing-angle-dependent color and spectral trends in brown dwarfs, as well as long-term photometric variability (∼100 hr). The origins of these trends are yet unexplained.
Nguyen Fuda, Dániel Apai
doaj   +1 more source

Discovery of an Apparent Red, High-velocity Type Ia Supernova at z = 2.9 with JWST

open access: yesThe Astrophysical Journal Letters
We present the James Webb Space Telescope (JWST) discovery of SN 2023adsy, a transient object located in a host galaxy JADES-GS+53.13485−27.82088 with a host spectroscopic redshift of 2.903 ± 0.007.
J. D. R. Pierel   +29 more
doaj   +1 more source

A regulatory cis element and a specific binding factor involved in the mitogenic control of murine ribosomal protein L32 translation.

open access: hybrid, 1992
Roger L. Kaspar   +4 more
openalex   +1 more source

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