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Numerous observational evidence has suggested the presence of active meteorology in the atmospheres of brown dwarfs. A near-infrared brightness variability has been observed. Clouds have a major role in shaping the thermal structure and…

Earth and Planetary Astrophysics · Physics 2022-05-04 Maxence Lefèvre , Xianyu Tan , Elspeth K. H. Lee , R. T. Pierrehumbert

The IceCube Neutrino Observatory is a cubic-kilometer-scaled detector located at the Geographic South Pole. The calibration of the directional reconstruction of neutrino-induced muons and the pointing accuracy of the detector have to be…

High Energy Astrophysical Phenomena · Physics 2021-08-23 Saskia Philippen , Thorsten Glüsenkamp , Sebastian Schindler

The properties of 939 star clusters in the Large and Small Magellanic Clouds were determined from ground-based CCD images in UBVR passbands. The areal coverage was extensive, corresponding to 11.0 sq-kpc in the LMC and 8.3 sq-kpc in the…

Astrophysics · Physics 2008-11-26 D. A. Hunter , B. G. Elmegreen , T. J. Dupuy , M. Mortonson

We report measurements from which we determine the spatial structure of the lunar contribution to night sky brightness, taken at the LSST site on Cerro Pachon in Chile. We use an array of six photodiodes with filters that approximate the…

Instrumentation and Methods for Astrophysics · Physics 2016-04-13 Michael Coughlin , Christopher Stubbs , Chuck Claver

Electron cloud effects have recognized as as one of the most serious bottleneck for reaching design performances in presently running and proposed future storage rings. The analysis of these effects is usually performed with very time…

Accelerator Physics · Physics 2011-09-12 S. Petracca , A. Stabile , T. Demma , G. Rumolo

In this present analysis we investigate the dust properties associated with the different gas phases (including the ionized phase this time) of the LMC molecular clouds at 1$^{\prime}$ angular resolution (four times greater than a previous…

Astrophysics of Galaxies · Physics 2019-06-26 D. Paradis , C. Mény , M. Juvela , A. Noriega-Crespo , I. Ristorcelli

This paper provides an overview of the Lunar Laser Ranging (LLR) experiments. The measurement principle is explained and its theory is derived. Both contributions, the direct reflected light from retroreflectors as well as the scattered…

Instrumentation and Methods for Astrophysics · Physics 2020-11-05 Andreas Märki

The frequency and the characteristics of lunar impacting meteorites are reconsidered under the general assumption of belonging to the sporadic meteoroids. We develop the model for evaluating the luminous energy detected in the visual band…

Astrophysics · Physics 2007-05-23 C. Sigismondi , G. P. Imponente

Full-sky microwave surveys like the upcoming Planck satellite mission will detect of order 10^4 galaxy clusters through their thermal Sunyaev-Zel'dovich effect. I investigate the properties of the gravitationally lensing subsample of these…

Astrophysics · Physics 2009-10-31 Matthias Bartelmann

Chromospheric plages are distributed between mid-latitude and the Equator and never close to the Poles. Therefore, we suspect that the inclination angle of the solar rotation axis has an impact on the observable chromospheric emission. We…

Solar and Stellar Astrophysics · Physics 2024-10-16 G. Vanden Broeck , S. Bechet , G. Rauw , F. Clette

Laser pulses fired at retroreflectors on the Moon provide very accurate ranges. Analysis yields information on Earth, Moon, and orbit. The highly accurate retroreflector positions have uncertainties less than a meter. Tides on the Moon show…

General Relativity and Quantum Cosmology · Physics 2010-03-24 James G. Williams , Slava G. Turyshev , Dale H. Boggs , J. Todd Ratcliff

The work contains the description of two narrow IR-bands observational data of total lunar eclipse of March, 3, 2007, one- and two-dimensional procedures of radiative transfer equation solution. The results of the procedure are the…

Atmospheric and Oceanic Physics · Physics 2009-11-13 Oleg S. Ugolnikov , Igor A. Maslov

The solar photosphere and the outer layer of the Sun's interior are characterized by convective motions, which display a chaotic and turbulent character. In this work, we evaluated the pseudo-Lyapunov exponents of the overshooting…

The regain of interest in Moon exploration has substantially grown in the last years. For this reason, the space agencies consider the development of a precise navigation and positioning service similar to the Earth GNSS. Aiming at some…

Earth and Planetary Astrophysics · Physics 2025-11-05 Pascale Defraigne , Frédéric Meynadier , Adrien Bourgoin

Like many airless planetary surfaces, the surface of the Moon is scattered by populations of blocks and smaller boulders. These features decrease in abundance with increasing exposure time due to comminution by impact bombardment and…

Earth and Planetary Astrophysics · Physics 2021-12-30 O. Ruesch , R. M. Marshal , W. Iqbal , J. H. Pasckert , C. H. van der Bogert , M. Patzek

Extensive aircraft cloud physical observations made in more than 2000 tropical cumulus clouds indicated new observational evidence viz., (1) horizontal structure of the air flow inside the cloud has consistent variations with successive…

General Physics · Physics 2007-05-23 A. Mary Selvam , A. S. Ramachandra Murty

Solar cycle 24 is one of the weakest solar cycles recorded, but surprisingly the declining phase of it had a slow CME which evolved without any low coronal signature and is classified as a stealth CME which was responsible for an intense…

Earth and Planetary Astrophysics · Physics 2021-03-03 Smitha V. Thampi , C. Krishnaprasad , Govind G. Nampoothiri , Tarun K. Pant

Radio interferometers can potentially detect the sky-averaged signal from the Cosmic Dawn (CD) and the Epoch of Reionisation (EoR) by studying the Moon as a thermal block to the foreground sky. The first step is to mitigate the Earth-based…

Instrumentation and Methods for Astrophysics · Physics 2023-12-19 Himanshu Tiwari , Benjamin McKinley , Cathryn M. Trott , Nithyanandan Thyagarajan

The global 21 cm signal from the hyperfine transition of cosmic atomic hydrogen is theorised to track the state of the early Universe via the analysis of its absorption and emission with respect to the radio background. Detecting this…

Instrumentation and Methods for Astrophysics · Physics 2026-02-25 Joe H. N. Pattison , Dominic J. Anstey , Eloy de Lera Acedo

The Profiler of Moon Limb is a recent instrument dedicated to the monitoring of optical turbulence profile of the atmosphere. Fluctuations of the Moon or the Sun limb allow to evaluate the index refraction structure constant C_n^2(h) and…

Instrumentation and Methods for Astrophysics · Physics 2020-02-13 Eric Aristidi , Aziz Ziad , Yan Fantéï-Caujolle , Julien Chabé , Christophe Giordano , Catherine Renaud , Henri Lantéri
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