Results 171 to 180 of about 19,748,042 (292)

Characterization of the Small‐Scale UV Contrasts at Low Latitudes of Venus as Seen by the UVI Camera Onboard Akatsuki

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract We characterize ultraviolet (UV) contrasts of Venus at the cloud top level, ∼70 km altitude, at low latitudes. We define the contrast as the albedo difference between bright and dark points at low latitudes of a single image. Our target is small‐scale contrast features, spanning 60–80 km, as seen in the reflected UV images acquired at 283 and ...
Hyeonju Kang, Yeon Joo Lee, Atsushi Yamazaki   +2 more
wiley   +1 more source

A gas-enshrouded and gas-reddened black hole at cosmic dawn. [PDF]

Nature
Naidu RP, Matthee J, Katz H, de Graaff A, Oesch PA, Smith A, Greene JE, Brammer G, Weibel A, Hviding R, Chisholm J, Labbé I, Simcoe RA, Witten C, Sun WQ, Atek H, Baggen JFW, Belli S, Bezanson R, Boogaard LA, Bose S, Bouwens RJ, Covelo-Paz A, Dayal P, Fudamoto Y, Furtak LJ, Giovinazzo E, Goulding A, Gronke M, Heintz KE, Hirschmann M, Illingworth G, Inoue AK, Johnson BD, Leja J, Leonova E, McConachie I, Maseda MV, Natarajan P, Nelson E, Setton DJ, Shivaei I, Sobral D, Stefanon M, Tacchella S, Toft S, Torralba A, van Dokkum P, van der Wel A, Volonteri M, Walter F, Wang B, Watson D, Whitaker K.   +53 more
europepmc   +1 more source

Experimental Aeolian Abrasion of Basalt Sands as an Analog for Producing Martian Dust

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Dust covers a significant portion of Mars' surface, with dust storms periodically engulfing the planet. Despite this, the origins of Martian dust are poorly understood, especially for ancient dust deposits. To address this deficit, we conducted experiments to replicate the mechanical abrasion of saltating sand grains in a Martian desert dune ...
Steven M. Adams, Gerilyn S. Soreghan
wiley   +1 more source

Direct spectroscopic observation of matter falling onto a compact stellar object. [PDF]

Sci Adv
Rahin R, Ballhausen R, Islam N, Leutenegger MA, Behar E, Zamora D, Coley J, Hell N, Kallman T, Lorenz M, Pradhan P, Wilms J, Zainab A.   +12 more
europepmc   +1 more source

NH4‐Smectites as Potential Precursors of Nitrogen Compounds Evolved During Analyses by the Sample Analysis at Mars (SAM) Instrument on the Curiosity Rover

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Ammonium (NH4+) in the interlayer space of phyllosilicates has been proposed as a potential but underexplored nitrogen reservoir on Mars. We synthesized ammonium‐exchanged smectites (montmorillonite SWy‐2 and nontronite NAu‐2) and analyzed them, both as pure phases and in mixtures containing five or 20 wt.% magnesium (Mg) perchlorate, under ...
S. Andrejkovičová, A. C. McAdam, J. C. Stern, M. Millan, R. Navarro‐González, C. A. Knudson, S. T. Wieman, E. B. Rampe, D. W. Ming, C. N. Achilles, S. S. Johnson, F. Rocha, C. A. Malespin, P. R. Mahaffy   +13 more
wiley   +1 more source

High-energy γ-photons and pair electrons generation in polarized ultraintense laser fields. [PDF]

Sci Rep
Agarwal S, Gupta DN.
europepmc   +1 more source

Mesoscale Modeling of Titan’s Shangri‐La Region: The Impact of Surface Properties on Winds

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract The knowledge of Titan’s near‐surface atmosphere is sparse. The Huygens descent probe measured winds, and the multiple dune field observations and possible dust storms suggest active near‐surface dynamics. The Dragonfly rotorcraft lander will fly close to the surface in the Shangri‐La region, near the Huygens landing site, where complex dune ...
Maxence Lefèvre, Léa E. Bonnefoy, Aymeric Spiga, Bruno de Batz de Trenquelléon, Sébastien Lebonnois, Alexander G. Hayes   +5 more
wiley   +1 more source

Magnetic character of the low-energy enhancement in ⁷⁰Zn. [PDF]

Nature
Ronning EK, Richard AL, Liddick SN, Spyrou A, Ringle R, Arora H, Berg HC, Berkman JM, Bleuel DL, Bosmpotinis K, Campbell SE, Chen X, Crider BP, Coleman RJ, DeYoung PA, Doetsch AA, Erington H, Gaballah T, Gamage ND, Good EC, Greaves B, Hartley AC, Huffman J, Ireland CM, Izzo C, Jain R, Larsen AC, Larsson JEL, Lubna RS, Maier FM, Mogannam MJ, Mücher D, Mumpower MR, Owens-Fryar G, Ogunbeku TH, Scriven DP, Smith MK, Sumithrarachchi CS, Sweet A, Taft K, Tsantiri A, Uthayakumaar S, Wiedeking M.   +42 more
europepmc   +1 more source

Dynamic Evolution of a Storm‐Time “Super‐EPB” Event Over China on the Magnetically Disturbed Night of 01 December 2023

Space Weather, Volume 24, Issue 10, October 2026.
Abstract This paper investigates the dynamic evolution of a storm‐time “Super‐EPB” event over China on 1 December 2023 (Kp ≤ 7, SYM/H ≥ −130 nT) using multi‐instrument observations. Occurring near sunset as the IMF‐Bz abruptly turned southward, with auroral extension to midlatitudes, the “Super‐EPB” extended to 40°N with an apex height of ∼2,460 km ...
Longchang Sun, Jiyao Xu, Wei Yuan, Yajun Zhu, Maosheng He, Wenjie Sun, Guozhu Li, Jiaojiao Zhang, Hong Gao, Aibin Zhang, Weijun Liu, Guojun Wang   +11 more
wiley   +1 more source

Rapid quasi-periodic reconfiguration of the accretion column in pulsar 1A 0535+262. [PDF]

Nat Commun
Kong L, Dai X, Santangelo A, Ji L, Suleimanov VF, Mushtukov AA, Ducci L, Zhang S, Shui Q, Zhang SN, Feng H, Tsygankov SS, Liu H, Wang P, Liu Q.   +14 more
europepmc   +1 more source