Results 181 to 190 of about 27,927 (266)

Side-polished fiber evanescent wave quartz-enhanced photoacoustic spectroscopy employing dielectric coatings for evanescent field enhancement. [PDF]

Photoacoustics
Twomey CF, Biagi G, Ruth AA, Ali F, Di Falco A, O'Faolain L, Walsh AJ.   +6 more
europepmc   +1 more source

A new statistic for the analysis of circular data in gamma-ray astronomy

, 1985
R. J. Protheroe
openalex   +1 more source

Radial Velocity Monitoring and Analysis of Gaia Astrometry of Selected Intermediate Mass Stars to Constrain Their Multiplicity Status

Astronomische Nachrichten, EarlyView.
ABSTRACT We present new radial velocity measurements of 13 selected intermediate mass stars (2–6 M⊙). The measurements were performed between 29 April and 6 September 2024 at the University Observatory Jena using the échelle spectrograph FLECHAS. The radial velocity of eight stars was found to be constant during our spectroscopic monitoring, namely: 17
J. Bätz, M. Mugrauer, K.‐U. Michel, J. Reichert, A. Tschirschky, L. Pietsch, F. Edelmann, R. Neuhäuser   +7 more
wiley   +1 more source

Hallmark features of conventional BCS superconductivity in 2H-TaS₂. [PDF]

Sci Rep
Elson F, Kenji Forslund O, Palm R, Alshemi A, Abdel-Hafiez M, Simutis G, Shiroka T, Das D, Blackburn E, Weissenrieder J, Sassa Y, Månsson M.   +11 more
europepmc   +1 more source

PERICLES: A Set of Empirical Rotational Isochrones Modeled on Cool Dwarfs in Open Clusters and Wide Binaries

Astronomische Nachrichten, EarlyView.
ABSTRACT Isochrones, equal‐age curves, are widely used in astrophysics to estimate stellar ages. Classical stellar parameters are, however, very limited in their usability for main sequence stars because of their weak age‐dependence. Here, rotation period measurements provide complementary information.
David Gruner, Sydney A. Barnes
wiley   +1 more source

Quasi-periodic oscillations of GHz-band polarization in a black hole. [PDF]

Nat Commun
Wang W, Chen J, Tian P, Ho LC, Sun X, Wang P, Zhang B, Zheng Z, Chen X, Zhang P, Zhu H, Yang W, Li B.   +12 more
europepmc   +1 more source

Confirmation of a Non‐Transiting Planet in the Habitable Zone of the Nearby M Dwarf L 98‐59

Astronomische Nachrichten, EarlyView.
ABSTRACT Only 40 exoplanetary systems with five or more planets are currently known. These systems are crucial for our understanding of planet formation and planet‐planet interaction. The M dwarf L 98‐59 has previously been found to show evidence of five planets, three of which are transiting.
Paul I. Schwarz, Stefan Dreizler, René Heller   +2 more
wiley   +1 more source

Commissioning an Inexpensive Off‐The‐Shelf Spectrograph for Radial‐Velocity Studies

Astronomische Nachrichten, EarlyView.
ABSTRACT We present a way to set up an inexpensive out of the shelf spectrograph at a local observatory. Stability and resolution of the spectrograph are high enough for radial velocity determination of binary stars or determination of stellar characteristics. Even some exoplanets might be detectable via the radial velocity method.
Lukas Stock, Andreas Schrimpf
wiley   +1 more source

Reduction and Solid Electrolyte Interphase Formation Mechanism of Prop‐1‐ene‐1,3‐Sultone

Batteries &Supercaps, EarlyView.
Layer‐forming additives stabilize Li‐ion cells, yet their mechanisms remain unclear. Using operando attenuated total reflection fourier‐transform infrared spectroscopy, online electrochemical mass spectrometry, electrochemical quartz crystal microbalance with dissipation monitoring, electrochemical impedance spectroscopy, and ex situ X‐ray ...
Tim Melin, Laura King, Maria Hahlin, Erik J. Berg   +3 more
wiley   +1 more source

Automated measurement of cardiomyocyte monolayer contraction using the Exeter Multiscope. [PDF]

Biomed Opt Express
Mohanan S, Horsell D, Watters T, Ghasemi M, Henderson L, Müllenbroich C, Bub G, Burton F, Smith G, Corbett AD.   +9 more
europepmc   +1 more source