Results 121 to 130 of about 34,434 (269)

New Moons of Uranus and Neptune from Ultradeep Pencil-beam Surveys

open access: yesThe Astronomical Journal
We have conducted extremely ultradeep pencil-beam observations for new satellites around both Uranus and Neptune. Tens of images on several different nights in 2021, 2022, and 2023 were obtained, shifted, and added together to reach as faint as 26.9 and ...
Scott S. Sheppard   +6 more
doaj   +1 more source

Orbital dynamics of the Uranian satellites based on Voyager data [PDF]

open access: yes
The satellites of Uranus all have significant non-zero eccentricities and in the case of Miranda a significant inclination as well. The Voyager 2 encounter with Uranus in January 1986, provided more accurate estimates of the masses and sizes of the ...
Plescia, J. B.
core   +1 more source

A Catalog of Low-Mass Star-Forming Cores Observed with SHARC-II at 350 microns

open access: yes, 2016
We present a catalog of low-mass dense cores observed with the SHARC-II instrument at 350 microns. Our observations have an effective angular resolution of 10", approximately 2.5 times higher than observations at the same wavelength obtained with the ...
Arce, Héctor G.   +6 more
core   +1 more source

Variability in the Uranian atmosphere: Uranus' north polar hood

open access: gold, 2022
Arjuna James   +7 more
openalex   +1 more source

Possible radio emission from Uranus at 0.5 MHz [PDF]

open access: yes
Radio emission from the direction of Uranus was detected in data from the radio astronomy experiment on the IMP-6 spacecraft. Previously, emission from the direction of Jupiter and Saturn was observed by the IMP-6 at a number of frequencies near 1 MHz ...
Brown, L. W.
core   +1 more source

Modelling of microstructured waveguides using a finite-element-based vectorial mode solver with transparent boundary conditions [PDF]

open access: yes, 2004
Finite element vectorial optical mode solver is used to analyze microstructured waveguides in a relatively small computational domain. The presentation will consider the computational method, as well as the applications of it on a number of waveguides ...
Groesen, E. van   +2 more
core   +1 more source

Are the aerosols on Uranus and Neptune composed of methane photopolymers? [PDF]

open access: yes
The measured optical properties of photochemically produced aerosols in an adding-doubling radiative transfer code were used to match various points in the spectra of Uranus and Neptune.
Giver, L., Goorvitch, D., Podolak, M.
core   +1 more source

Measurement of the cosmic optical background using the long range reconnaissance imager on New Horizons

open access: yesNature Communications, 2017
The cosmic optical background is an important cosmological observable. Here the authors show that a direct observation of the background brightness from the outer solar system can be obtained by the LORRI instrument aboard the New Horizons mission, on ...
Michael Zemcov   +5 more
doaj   +1 more source

Uranus Upper-Atmospheric Temperatures From Stellar Occultations

open access: gold, 2022
William Saunders   +3 more
openalex   +1 more source

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