Results 71 to 80 of about 792,921 (206)

Unveiling Extensive Clouds of Dark Gas in the Solar Neighborhood

open access: yes, 2005
International audienceFrom the comparison of interstellar gas tracers in the solar neighborhood (HI and CO lines from the atomic and molecular gas, dust thermal emission, and ?
Casandjian, J.M.   +2 more
core   +1 more source

Studying the depth of nearby interstellar clouds [PDF]

open access: yes, 2021
Molecular clouds are the birthplace of stars and planets. Understanding how stars are formed inside these interstellar clouds is one of the longest-standing questions in astronomy.
Μπουζέλου, Φωτεινή Μαρία
core  

Deep Space Network Radio Science and Ground‐Based Planetary Radar in the Next Decade

open access: yesRadio Science, Volume 60, Issue 7, July 2025.
Abstract The Deep Space Network (DSN) has been a core operational element of NASA's crewed and robotic exploration of the Solar System since the early 1960s. The primary role of the DSN has been to acquire telemetry and navigation data, but over the years, its radiometric and radar capabilities have expanded to form a system for obtaining unique ...
R. S. Park   +13 more
wiley   +1 more source

Grain growth, optical polarisation, and extinction in interstellar clouds [PDF]

open access: yes, 1989
Increases in the wavelength of maximum polarization and the ratio of total to selective extinction are generally assumed to be the result of grain growth in interstellar clouds.
Jones, A. P.
core  

Lactea: Web‐Based Spectrum‐Preserving Multi‐Resolution Visualization of the GAIA Star Catalog

open access: yesComputer Graphics Forum, Volume 44, Issue 3, June 2025.
Abstract The explosion of data in astronomy has resulted in an era of unprecedented opportunities for discovery. The GAIA mission's catalog, containing a large number of light sources (mostly stars) with several parameters such as sky position and proper motion, is playing a significant role in advancing astronomy research and has been crucial in ...
Reem Alghamdi   +3 more
wiley   +1 more source

Isolated Black Holes as Potential PeVatrons and Ultrahigh-energy Gamma-Ray Sources

open access: yesThe Astrophysical Journal Letters
The origin of PeV cosmic rays (CRs) is a long-standing mystery, and ultrahigh-energy gamma-ray observations would play a crucial role in identifying it. Recently, LHAASO reported the discovery of “dark” gamma-ray sources that were detected above 100 TeV ...
Shigeo S. Kimura   +4 more
doaj   +1 more source

A study of X-ray point sources in Heiles Clouds 1 and 2

open access: yesActa Polytechnica
Star formation takes place in the coldest parts of molecular clouds, beginning in the densest, collapsing regions of filaments. As pre-main sequence stars are luminous X-ray emitters, X-ray point sources can serve as effective tracers of YSOs.
Nóra Varga   +2 more
doaj   +1 more source

Structure Identification of CO Monolayer on Ag(111) Using Atomic Force Microscopy

open access: yesAdvanced Materials Interfaces, Volume 12, Issue 10, May 19, 2025.
Physisorption systems of CO molecules on metal surfaces have long been studied. Nondestructive analysis of weakly adsorbed systems on surfaces still remains a challenging task. In this study, the structure of the CO monolayer is successfully determined by directly visualizing individual CO molecules using atomic force microscopy (AFM).
Mitsuo Kimura   +2 more
wiley   +1 more source

Interstellar Migration, the Population ‘Problem’ and the Climate Emergency

open access: yes
Critical Quarterly, Volume 68, Issue 1, Page 103-119, April 2026.
Anna Hartnell
wiley   +1 more source

The Magnetic Field in Quiescent Star-forming Filament G16.96+0.27

open access: yesThe Astrophysical Journal
We present 850 μ m thermal dust polarization observations with a resolution of 14.″4 (∼0.13 pc) toward an infrared dark cloud G16.96+0.27 using James Clerk Maxwell Telescope/POL-2.
Qi-Lao Gu   +22 more
doaj   +1 more source

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