Results 81 to 90 of about 50,798 (260)

Interstellar dust along the line of sight of GX 3+1 [PDF]

open access: yesAstronomy & Astrophysics, 2019
Context.Studying absorption and scattering of X-ray radiation by interstellar dust grains allows us to access the physical and chemical properties of cosmic grains even in the densest regions of the Galaxy.Aims.We aim at characterising the dust silicate ...
D. Rogantini   +11 more
semanticscholar   +1 more source

The Near-infrared Extinction Law at High and Low Galactic Latitudes

open access: yesThe Astrophysical Journal
The Milky Way dust extinction curve in the near-infrared (NIR) follows a power-law form, but the value of the slope, β _NIR , is debated. Systematic variations in the slope of the Milky Way UV extinction curve are known to be correlated with variations ...
Robert E. Butler, Samir Salim
doaj   +1 more source

On Absorption by Circumstellar Dust, With the Progenitor of SN2012aw as a Case Study

open access: yes, 2012
We use the progenitor of SN2012aw to illustrate the consequences of modeling circumstellar dust using Galactic (interstellar) extinction laws that (1) ignore dust emission in the near-IR and beyond; (2) average over dust compositions, and (3) mis ...
C. S. Kochanek   +26 more
core   +1 more source

A Dynamical Constraint on Interstellar Dust Models from Radiative Torque Disruption [PDF]

open access: yesAstrophysical Journal, 2018
Interstellar dust is an essential component of the interstellar medium (ISM) and plays critical roles in astrophysics. Achieving an accurate model of interstellar dust is therefore of great importance.
Thiem C. Hoang
semanticscholar   +1 more source

CMB Shadows: The Effect of Interstellar Extinction on Cosmic Microwave Background Polarization and Temperature Anisotropy [PDF]

open access: yesAstrophysical Journal, 2020
We evaluate the degradation of the accuracy of the component separation between the cosmic microwave background (CMB) and foreground components caused by neglect of absorption of the CMB’s monopole component by the galactic interstellar matter.
Masashi Nashimoto   +2 more
semanticscholar   +1 more source

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos   +6 more
wiley   +1 more source

The Impact of Accurate Extinction Measurements for X-ray Spectral Models

open access: yes, 2015
Interstellar extinction includes both absorption and scattering of photons from interstellar gas and dust grains, and it has the effect of altering a source's spectrum and its total observed intensity.
Corrales, Lia   +2 more
core   +1 more source

Climate Emergency and Different Ways to Fail? The Fermi Paradox, the Simulation Hypothesis, Agency and Hope

open access: yesJournal for the Theory of Social Behaviour, Volume 55, Issue 4, December 2025.
ABSTRACT Humanity seems stuck on different ways to fail to meet the challenge posed by a declared climate emergency and manifest problems of ecological breakdown. Rather than reprise these failures, we use the Fermi Paradox and simulation hypothesis to make a simple point about agency. The argument unfolds in two sections.
Jamie Morgan
wiley   +1 more source

Mapping the Milky Way bulge at high resolution: the 3D dust extinction, CO, and X factor maps

open access: yes, 2014
Three dimensional interstellar extinction maps provide a powerful tool for stellar population analysis. We use data from the VISTA Variables in the Via Lactea survey together with the Besan\c{c}on stellar population synthesis model of the Galaxy to ...
Chen, B. Q.   +8 more
core   +1 more source

The shape and composition of interstellar silicate grains [PDF]

open access: yes, 2006
We investigate the composition and shape distribution of silicate dust grains in the interstellar medium. The effect of the amount of magnesium in the silicate lattice is studied.
A. de Koter   +55 more
core   +5 more sources

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