Results 51 to 60 of about 2,710,365 (224)

Early infrared astronomy

open access: yes, 2009
International audienceI present a short history of infrared astronomy, from the first scientific approaches of the `radiant heat' in the seventeenth century to the 1970's, the time when space infrared astronomy was developing very rapidly.
Lequeux, James
core   +2 more sources

Modeling Long-wavelength Amorphous Dust Emission Based on the Physically Motivated Soft-potential Model

open access: yesThe Astrophysical Journal
We propose a new amorphous dust emission model based on the soft-potential (SP) model, applicable in the long-wavelength range from the far-infrared to the microwave.
Masashi Nashimoto
doaj   +1 more source

B-fields and Dust in Interstellar Filaments Using Dust Polarization (BALLAD-POL). I. The Massive Filament G11.11–0.12 Observed by SOFIA/HAWC+

open access: yesThe Astrophysical Journal, 2023
We report the first measurement of polarized thermal dust emission toward the entire infrared dark cloud G11.11−0.12 taken by the polarimeter SOFIA/HAWC+ at 214 μ m. The obtained magnetic fields ( B -fields) from the polarized emission of the early-stage
Nguyen Bich Ngoc   +10 more
doaj   +1 more source

Wavefront Shaping for Optimal Extinction of Focused Light by Individual Nanoscatterers

open access: yesLaser &Photonics Reviews, EarlyView.
Wavefront shaping enables near‐complete optical extinction by nanoscatterers separated from a planar reflector. Time‐reversed emission profiles provide optimal illumination conditions, yielding 70% extinction from a single plasmonic nanoparticle and up to 90% from sub‐wavelength nanoparticle clusters, offering a promising route to efficient in‐ and out‐
Nick Feldman   +5 more
wiley   +1 more source

Far infrared supplement: Catalog of infrared observations, second edition [PDF]

open access: yes, 1988
The Far Infrared Supplement: Catalog of Infrared Observations summarizes all infrared astronomical observations at far infrared wavelengths (5 to 1000 microns) published in the scientific literature from 1965 through 1986.
Mead, Jaylee M.   +2 more
core  

Enhancing severe convection forecasts with microwave radiance assimilation in limited‐area models

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
Microwave satellite radiances remain largely underexploited in convection‐permitting limited‐area models. We assess the assimilation of humidity‐sensitive radiances from the MHS instrument in the operational ICON‐2I model, improving the precipitation forecast of a severe convective event over the Marche region, Italy, substantially by correcting ...
Marcello Grenzi   +5 more
wiley   +1 more source

SOFIA: Stratospheric Observatory for Infrared Astronomy [PDF]

open access: yes, 2007
This viewgraph presentation reviews the Stratospheric Observatory for Infrared Astronomy (SOFIA). The contents include: 1) Heritage & History; 2) Level 1 Requirements; 3) Top Level Overview of the Observatory; 4) Development Challenges; and 5) Highlight ...
Kunz, Nans, Bowers, Al, Becker, Eric
core  

Far-infrared Luminosity Bursts Trace Mass Accretion onto Protostars

open access: yesThe Astronomical Journal
Evidence abounds that young stellar objects undergo luminous bursts of intense accretion that are short compared to the time it takes to form a star. It remains unclear how much these events contribute to the main-sequence masses of the stars.
William J. Fischer   +8 more
doaj   +1 more source

CO Excitation in High-z Main-sequence Analogues: Resolved CO(4−3)/CO(3−2) Line Ratios in DYNAMO Galaxies

open access: yesThe Astrophysical Journal, 2023
The spectral line energy distribution of carbon monoxide contains information about the physical conditions of the star-forming molecular hydrogen gas; however, the relation to local radiation field properties is poorly constrained.
Laura Lenkić   +8 more
doaj   +1 more source

Accessing Both Electrochemical SEIRA and SERS With Highly Sensitive Metamaterials for Enhanced Molecular Identification

open access: yesSmall, EarlyView.
Surface‐enhanced infrared absorption (SEIRA) and Raman scattering (SERS) are complementary, highly sensitive molecular detection methods. A reusable metamaterial substrate capable of combined SEIRA and SERS is used here for real‐time sensing, tracking interfacial dynamics in an electrochemical reaction and detecting symmetry‐breaking behavior at the ...
Nicolas Spiesshofer   +13 more
wiley   +1 more source

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