Results 21 to 30 of about 1,698,518 (186)

Clouds of Small Things: Provisioning Infrastructure-as-a-Service from within Community Networks [PDF]

open access: yes, 2013
Community networks offer a shared communication infrastructure where communities of citizens build and own open networks. While the IP connectivity of the networking devices is successfully achieved, the number of services and applications available from
Navarro, Leandro   +7 more
core   +1 more source

A Component of the Smith High-velocity Cloud Now Crossing the Galactic Plane

open access: yesThe Astrophysical Journal, 2023
We have identified a new structure in the Milky Way: a leading component of the Smith high-velocity cloud that is now crossing the Galactic plane near longitude 25°. Using new 21 cm H i data from the Green Bank Telescope (GBT), we measured the properties
Felix J. Lockman   +3 more
doaj   +1 more source

Interstellar neutral hydrogen at high velocities [PDF]

open access: yes, 1990
For almost three decades neutral hydrogen moving at velocities unexplicable by galactic rotation has been observed. These so-called high-velocity clouds (IIVCs) have been invoked as evidence for infall of neutral gas to the galaxy, as manifestations of a
Wakker, Bastiaan Pieter
core   +4 more sources

A Neutral Hydrogen Self-Absorption Cloud in the SGPS

open access: yesThe Astrophysical Journal, 2003
Using data from the Southern Galactic Plane Survey (SGPS) we analyze an HI self-absorption cloud centered on l = 318.0 deg, b = -0.5 deg, and velocity, v = -1.1 km/s. The cloud was observed with the Australia Telescope Compact Array (ATCA) and the Parkes Radio Telescope, and is at a near kinematic distance of less than 400 pc with derived dimensions of
Kavars, D. W.   +4 more
openaire   +3 more sources

Far-ultraviolet Dust Extinction and Molecular Hydrogen in the Diffuse Milky Way Interstellar Medium

open access: yesThe Astrophysical Journal, 2023
We aim to compare variations in the full-UV dust extinction curve (912–3000 Å), with the H i /H _2 /total H content along diffuse Milky Way sightlines, to investigate possible connections between ISM conditions and dust properties. We combine an existing
Dries Van De Putte   +4 more
doaj   +1 more source

THE TURBULENCE VELOCITY POWER SPECTRUM OF NEUTRAL HYDROGEN IN THE SMALL MAGELLANIC CLOUD [PDF]

open access: yesThe Astrophysical Journal, 2015
We present the results of the Velocity Coordinate Spectrum (VCS) technique to calculate the velocity power spectrum of turbulence in the Small Magellanic Cloud (SMC) in 21cm emission. We have obtained a velocity spectral index of -3.85 and an injection scale of 2.3 kpc. The spectral index is steeper than the Kolmogorov index which is expected for shock-
Chepurnov, Alexey   +3 more
openaire   +2 more sources

Supporting system deployment decisions in public clouds [PDF]

open access: yes, 2013
Decisions to deploy IT systems on public Infrastructure-as-a-Service clouds can be complicated as evaluating the benefits, risks and costs of using such clouds is not straightforward.
Khajeh-Hosseini, Ali
core   +2 more sources

The Diffuse Ionized Gas Halo of the Large Magellanic Cloud

open access: yesThe Astrophysical Journal, 2023
The Large Magellanic Cloud (LMC) has an extensive H α emission halo that traces an extended, warm ionized component of its interstellar medium. Using the Wisconsin H α Mapper telescope, we present the first kinematic H α survey of an extensive region ...
B. M. Smart   +6 more
doaj   +1 more source

A Search for OH 18 cm Emission from Intermediate-velocity Gas at High Galactic Latitudes

open access: yesThe Astrophysical Journal, 2023
We present search results of 22 high-latitude (∣ b ∣ > 25°) sightlines for OH 18 cm emission using the 305 m radio telescope at the Arecibo Observatory. These sightlines appear in neutral hydrogen emission at intermediate velocities −90 ≤ V _LSR ≤ −20 km
Allison J. Smith, D. Anish Roshi
doaj   +1 more source

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