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Relative out of plane displacements of the constituent layers of two dimensional materials gives rise to unique low frequency breathing modes. By computing the height-height correlation functions in momentum space, we show that, the layer…

Materials Science · Physics 2018-05-02 Indrajit Maity , Prabal K Maiti , Manish Jain

We investigate the effect that the temperature dependence of the crystal structure of a two dimensional organic charge-transfer salt has on the low-energy Hamiltonian representation of the electronic structure. For that, we determine the…

Strongly Correlated Electrons · Physics 2012-08-23 Harald O. Jeschke , Mariano de Souza , Roser Valenti , Rudra Sekhar Manna , Michael Lang , John A. Schlueter

We report a 4.8 sigma detection of water absorption features in the day side spectrum of the hot Jupiter HD 189733 b. We used high-resolution (R~100,000) spectra taken at 3.2 microns with CRIRES on the VLT to trace the radial-velocity shift…

Earth and Planetary Astrophysics · Physics 2015-06-16 J. L. Birkby , R. J. de Kok , M. Brogi , E. J. W. de Mooij , H. Schwarz , S. Albrecht , I. A. G. Snellen

We present C18O observations of the pre-stellar core L1689B, in the (J=3-2) and (J=2-1) rotational transitions, taken at the James Clerk Maxwell Telescope in Hawaii. We use a lambda-iteration radiative transfer code to model the data. We…

Astrophysics · Physics 2015-06-24 N. E. Jessop , D. Ward-Thompson

The elemental ratios of carbon, nitrogen, and oxygen in the atmospheres of hot Jupiters may hold clues to their formation locations in the protostellar disc. In this work, we adopt gas phase chemical abundances of C, N and O from several…

Earth and Planetary Astrophysics · Physics 2022-06-22 Spandan Dash , Liton Majumdar , Karen Willacy , Shang-Min Tsai , Neal Turner , P. B. Rimmer , Murthy S. Gudipati , Wladimir Lyra , Anil Bhardwaj

We demonstrate the calculation of solar wind electron bulk parameters from recent observations by Solar Wind Analyser Electron Analyser System on board Solar Orbiter. We use our methods to derive the electron bulk parameters in a time…

Our knowledge about the physical processes determining the activity of comets were mainly influenced by several extremely successful space missions, the predictions of theoretical models and the results of laboratory experiments. However,…

Earth and Planetary Astrophysics · Physics 2015-05-27 Bastian Gundlach , Yuri Skorov , Jürgen Blum

Changes in the atmospheric composition alter the magnitude and partitioning between the downward propagating solar and atmospheric longwave radiative fluxes heating the Earth's surface. These changes are computed by radiative transfer codes…

Atmospheric and Oceanic Physics · Physics 2020-04-30 Chirag Dhara

Electricity is difficult to store, except at prohibitive cost, and therefore the balance between generation and load must be maintained at all times. Electricity is traditionally managed by anticipating demand and intermittent production…

Machine Learning · Computer Science 2024-09-26 Julie Keisler , Margaux Bregere

We study the temperature dependence of the conductivity of the 2D electronic solid. In realistic samples, a domain structure forms in the solid and each domain randomly orients in the absence of the in-plane field. At higher temperature,…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Shi-Jie Yang , Yue Yu

Context: Since the first exoplanetary atmosphere detection using the Hubble Space Telescope, characterization of exoplanet atmospheres from the ground have been playing an increasingly important role in the analysis of such atmospheres…

Earth and Planetary Astrophysics · Physics 2015-06-16 N. Astudillo-Defru , P. Rojo

Short--period ($P<$1 hr orbits) detached double white dwarf binary (DWDB) components identified with transient surveys (e.g. SDSS, ZTF) have hot surface temperatures ($>$10,000 K) and observed radii a factor two larger than completely…

Solar and Stellar Astrophysics · Physics 2025-10-15 Lucy O. McNeill , Ryosuke Hirai

We present novel tests of pre$-$main-sequence models based on individual dynamical masses for the M7 binary LSPM J1314+1320AB. Joint analysis of our Keck adaptive optics astrometric monitoring along with Very Long Baseline Array radio data…

Solar and Stellar Astrophysics · Physics 2016-08-17 Trent J. Dupuy , Jan Forbrich , Aaron Rizzuto , Andrew W. Mann , Kimberly Aller , Michael C. Liu , Adam L. Kraus , Edo Berger

We present a time-dependent radiative model for the atmosphere of the transiting planets that take into account the eccentricity of their orbit. We investigate the temporal temperature and flux variations due to the planet-star distance…

Astrophysics · Physics 2009-11-13 N. Iro , D. Deming

The temporal variability of the telluric sodium layer is investigated by analyzing 28 nights of data obtained with the Colorado State University LIDAR experiment. The mean height power spectrum of the sodium layer was found to be well fit…

Astrophysics · Physics 2009-11-11 D. S. Davis , P. Hickson , G. Herriot , C. Y. She

We analyze the effects of different forms of the sound-velocity function cs(T) on the hydrodynamic evolution of matter formed in the central region of relativistic heavy-ion collisions. At high temperatures (above the critical temperature…

Nuclear Theory · Physics 2009-11-13 Mikolaj Chojnacki

The theory of summation of electromagnetic line transitions is used to tabulate the Taylor expansion of the refractive index of humid air over the basic independent parameters (temperature, pressure, humidity, wavelength) in five separate…

Optics · Physics 2007-05-23 Richard J. Mathar

We determine the surface lithium abundance of the eclipsing binary components in V 505 Per (HIP 10961), A(Li)=2.65+/-0.07 and 2.35+/-0.1, which supports the rather unexpected conclusion that their surface Li abundances differ. We find…

Solar and Stellar Astrophysics · Physics 2025-07-29 G. Koenigsberger , W. Schmutz , C. Pilachowski , A. R. Mejia-Nava , D. Sikorski , M. Cordero

Thermal dissociation and recombination of molecular hydrogen, H_2, in the atmospheres of ultra-hot Jupiters (UHJs) has been shown to play an important role in global heat redistribution. This, in turn, significantly impacts their planetary…

Earth and Planetary Astrophysics · Physics 2021-05-12 Alexander Roth , Benjamin Drummond , Eric Hébrard , Pascal Tremblin , Jayesh Goyal , Nathan Mayne

We investigate the atmosphere and interior of the new transiting planet HD 149026b, which appears to be very rich in heavy elements. We first compute model atmospheres at metallicities ranging from solar to ten times solar, and show how for…

Astrophysics · Physics 2009-11-13 J. J. Fortney , D. Saumon , M. S. Marley , K. Lodders , R. S. Freedman