Results 91 to 100 of about 525 (133)

A first look at rocky exoplanets with JWST. [PDF]

Proc Natl Acad Sci U S A
Kreidberg L, Stevenson KB.
europepmc   +1 more source

JWST Detects Silane in a Cold Low-Metallicity World

Faherty J, Meisner A, Burningham B, Visscher C, Suarez G, Gagne J, Merchan SA, Rothermich A, Line M, Burgasser A, Schneider A, Caselden D, Kirkpatrick D, Kuchner M, Gagliuffi DCB, Eisenhardt P, Gelino C, Gonzales E, Marocco F, Leggett S, Lodieu N, Casewell S, Tremblin P, Cushing M, Osorio MRZ, Béjar V, Gauza B, Wright E, Phillips M, Zhang J, Martín E.   +30 more
europepmc   +1 more source

A Survey of Current Operations-Ready Thermospheric Density Models for Drag Modeling in LEO Operations. [PDF]

J Astronaut Sci
Mutschler S, Pilinski M, Bruinsma S, Sutton E, Tobiska WK, Knipp D, Fang TW, Casali S, Mallik V, DiLorenzo B, Siemes C.   +10 more
europepmc   +1 more source

Magnetic Reconnection in Space: An Introduction. [PDF]

Space Sci Rev
Burch JL, Nakamura R.
europepmc   +1 more source

A primordial noble gas component discovered in the Ryugu asteroid and its implications. [PDF]

Nat Commun
Verchovsky AB, Abernethy FAJ, Anand M, Franchi IA, Grady MM, Greenwood RC, Barber SJ, Suttle M, Ito M, Tomioka N, Uesugi M, Yamaguchi A, Kimura M, Imae N, Shirai N, Ohigashi T, Liu MC, Uesugi K, Nakato A, Yogata K, Yuzawa H, Karouji Y, Nakazawa S, Okada T, Saiki T, Tanaka S, Terui F, Yoshikawa M, Miyazaki A, Nishimura M, Yada T, Abe M, Usui T, Watanabe SI, Tsuda Y, Consortium Phase2 curation team Kochi.   +35 more
europepmc   +1 more source

The quiet-Sun photosphere and chromosphere [PDF]

Philosophical Transactions Series A, Mathematical, Physical, and Engineering Sciences, 2012
Abstract The overall structure and the fine structure of the solar photosphere outside active regions are largely understood, except possibly the important roles of a turbulent near-surface dynamo at its bottom, internal gravity waves at its top and small-scale vorticity. Classical one-dimensional static radiation-escape modelling has
Robert J Rütten
exaly   +4 more sources

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Rotational shear in the low photosphere of the Sun

Proceedings of the International Astronomical Union, 2023
AbstractWe present a new method to measure the rotational height gradient in the solar photosphere. The method is inspired from differential interferometric techniques, we applied it to spectroscopic observations in the FeI 630.15 nm obtained at the solar telescope THEMIS which is equipped with an efficient adaptive optics system.
Corbard, Thierry, Faurobert, M., Gelly, B., Douet, R., Laforgue, D.   +4 more
openaire   +1 more source

Magnetic flux transport in the photosphere of the Sun

2020
<p>On the basis of the synoptic maps of the photospheric magnetic field obtained by the National Solar Observatory Kitt Peak for 1978-2016, a latitude-time diagram of the magnetic field was built. When averaging intensity values over the heliolongitude, the magnetic field sign was taken into account.
Dmitrii Baranov, Elena Vernova, Marta Tyasto, Olga Danilova   +3 more
openaire   +1 more source

The Photosphere of the Sun

1959
An empirical model of the photosphere rests on observations of: (1) the solar constant—which fixes the temperature scale, (2) limb darkening—from which the variation of temperature with depth throughout the atmosphere is determined, and (3) the energy distribution—which, together with limb darkening, reveals the opacity at each depth and for each ...
Leo Goldberg, A. Keith Pierce
openaire   +1 more source

A search for continuous ultraviolet opacity sources in the Sun's photosphere

Solar Physics, 1973
Experimental results on limb darkening and specific intensities imply more ultraviolet continuous opacity than that predicted by theoretical calculations. Some atomic and molecular processes, not yet studied from this standpoint are investigated as to their importance on the continuous absorption coefficient.
LANDI DEGL'INNOCENTI, EGIDIO, NOCI, GIANCARLO   +1 more
openaire   +2 more sources