Geometric and wave optics in a BTZ optical metric-based wormhole by Semra Gurtas Dogan, Abdullah Guvendi, Omar Mustafa

“…In the wave regime, we reformulate the Helmholtz equation into a Schrödinger-like form, revealing a spatially localized effective potential that encodes curvature and angular momentum effects. …”
Get full text

Characterization of ferric hydroxysulfate on Mars and implications of the geochemical environment supporting its formation by J. L. Bishop, J. M. Meusburger, C. M. Weitz, M. Parente, C. Gross, D. Talla, A. M. Saranathan, Y. Itoh, M. R. D. Gruendler, A. E. G. Howells, M. Yeşilbaş, T. Hiroi, B. Schmitt, A. Maturilli, M. Al-Samir, T. F. Bristow, B. Lafuente, M. Wildner

“…Hydrated sulfates at these locations likely formed through evaporative processes or low-temperature alteration. …”
Get full text

A 12,800-year-old layer with cometary dust, microspherules, and platinum anomaly recorded in multiple cores from Baffin Bay. by Christopher R Moore, Vladimir A Tselmovich, Malcolm A LeCompte, Allen West, Stephen J Culver, David J Mallinson, Mohammed Baalousha, James P Kennett, William M Napier, Michael Bizimis, Victor Adedeji, Seth R Sutton, Gunther Kletetschka, Kurt A Langworthy, Jesus P Perez, Timothy Witwer, Marc D Young, Mahbub Alam, Jordan Jeffreys, Richard C Greenwood, James A Malley

“…These microspherules were likely formed by low-altitude touchdown airbursts and surface impacts of comet fragments and were widely dispersed. …”
Get full text

Impact of submicron Nb_{3}Sn stoichiometric surface defects on high-field superconducting radiofrequency cavity performance by Sarah A. Willson, Aiden V. Harbick, Liana Shpani, Van Do, Helena Lew-Kiedrowska, Matthias U. Liepe, Mark K. Transtrum, S. J. Sibener

“…For Sn-deficient Nb_{3}Sn surfaces, we experimentally identify a periodic nanoscale surface corrugation that likely forms because of extensive Sn loss from the surface. …”
Get full text