Results 41 to 50 of about 11,148 (232)

Detection of New Auroral Emissions at Io and Implications for Its Interaction with the Plasma Torus

The Planetary Science Journal
We observed Io’s optical aurora in eclipse on six nights between 2022 and 2024 using Keck I/HIRES. Spectra revealed 13 new auroral emissions not identified previously, tripling the total number of optical emissions lines detected at Io.
Zachariah Milby, Katherine de Kleer, Carl Schmidt   +2 more
doaj   +1 more source

Erosion and redeposition patterns on divertor tiles after exposure in the first operational phase of WEST

Nuclear Materials and Energy
Erosion and deposition patterns were obtained by ion beam analyses (Rutherford backscattering (RBS) and nuclear reaction analysis (NRA)) and scanning electron microscopy (SEM assisted by FIB cutting and EDX) on entire W-coated graphite divertor tiles ...
M. Balden, M. Diez, A. Hakola, M. Mayer, E. Tsitrone   +4 more
doaj   +1 more source

Do Water Fountain Jets Really Indicate the Onset of the Morphological Metamorphosis of Circumstellar Envelopes? [PDF]

, 2016
The small-scale bipolar jets having short dynamical ages from "water fountain (WF)" sources are regarded as an indication of the onset of circumstellar envelope morphological metamorphosis of intermediate-mass stars.
Hsia, Chih-Hao, Imai, Hiroshi, Nakashima, Jun-ichi, Yung, Bosco H. K.   +3 more
core   +2 more sources

Unveiling the Role of Curvature in Carbon for Improved Energy Release of Ammonium Perchlorate

Advanced Materials, EarlyView.
High‐curvature carbon materials identified via machine learning and simulation can enhance the heat release and combustion performance of ammonium perchlorate. ABSTRACT The catalytic role of carbon curvature in the thermal decomposition of ammonium perchlorate (AP) remains largely unexplored. To address this gap, this study employs machine learning and
Dan Liu, Keliang Song, Haorui Zhang, Zhipeng Liu, Guansong He, Junru Wang, Wenming Yang, Xu Zhao, Zhijian Yang   +8 more
wiley   +1 more source

Chandra X-Ray Observatory Observations of Neutron Stars: An Overview [PDF]

, 2006
We present a brief review of Chandra X-ray Observatory observations of neutron stars. The outstanding spatial and spectral resolution of this great observatory have allowed for observations of unprecedented clarity and accuracy.
Clarke, T., Karovska, M., Pavlov, G. G., Weisskopf, M. C., Zavlin, V. E.   +4 more
core   +1 more source

Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes

Advanced Materials, EarlyView.
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro, Hugo Aramberri, Víctor Rouco, Gabriel Sánchez‐Santolino, Mariona Cabero, Fernando Gallego, David Sánchez‐Manzano, José M. González‐Calbet, Federico Mompeán, Mar García‐Hernández, Alberto Rivera‐Calzada, Jorge Íñiguez‐González, Carlos León, Jacobo Santamaría   +13 more
wiley   +1 more source

XMM-Newton RGS observation of the warm absorber in Mrk 279

, 2010
The Seyfert 1 galaxy Mrk 279 was observed by XMM-Newton in November 2005 in three consecutive orbits, showing significant short-scale variability (average soft band variation in flux ~20%).
Allende Prieto, Allende Prieto, Arav, Arnaud, Baldwin, Behar, Bianchi, Blustin, Cash, Costantini, Costantini, Crenshaw, Crenshaw, Dasyra, E. Costantini, Ebrero, Elvis, Elvis, Ferland, Fields, G. A. Kriss, Gabel, George, Gibson, Gilli, Holweger, J. Ebrero, J. S. Kaastra, K. C. Steenbrugge, K. T. Korista, Kaastra, Kaastra, Kaastra, Kaspi, Krolik, Krongold, Krongold, Krongold, Krongold, Lodders, Maiolino, Miller, Murray, N. Arav, Netzer, Netzer, Netzer, Netzer, Nicastro, Nicastro, Ogle, R. G. Detmers, Rees, Reynolds, Risaliti, Ross, Scott, Spergel, Steenbrugge, Wandel, Weaver, Weaver, Williams   +62 more
core   +1 more source

Infrared spectroscopy of NGC 1068: Probing the obscured ionizing AGN continuum [PDF]

, 1998
The ISO-SWS 2.5-45 um infrared spectroscopic observations of the nucleus of the Seyfert 2 galaxy NGC 1068 (see companion paper) are combined with a compilation of UV to IR narrow emission line data to determine the spectral energy distribution (SED) of ...
Amiel Sternberg, Antonucci R., Binette L., Binette L., Binette L., Boksenberg A., Brinkmann W., Brunner H., Butler K., Dieter Lutz, Eckhard Sturm, Erkens U., Galavis M. E., Hagai Netzer, Halpern J. P., Kormendy J., Lennon D. J., Lutz D., Lutz D., Malkan M. A., Marconi A., Mendoza C., Moorwood A. F. M., Moorwood A. F. M., Netzer H., Oliva E., Oliva E., Oliva E., Osterbrock D. E., Pedlar A., Pedlar A., Penston M. V., Penston M. V., Penston M. V., Perez E., Pottasch S. R., Puchnarewicz E. M., Reconditi M., Reinhard Genzel, Robinson A., Roche P. F., Schulz H., Schulz H., Seaton M. J., Shakura N. I., Storchi-Bergmann Th., Tal Alexander, Viegas S. M., Walter R., Walter R., Wu C.-C., Yoshida M.   +51 more
core   +5 more sources

Elastomeric Micro‐Balloons for Remote Control of Cerebral Blood Flow and Real‐Time In vivo Imaging of Rodent Brain Response to Hypoperfusion

Advanced Materials, EarlyView.
This study reports the fabrication of MRI‐compatible elastomeric micro‐balloons via a multi‐step bubble casting process, where the monolithic elastomeric wall is selectively stiffened for reversible and controlled inflation and elasticity, depending on the target vessels for graded occlusion of cerebral arteries.
Jong Bin Kim, Jinghui Wang, Yinding Chi, Jingxian Wu, Alicia Ng, Guanda Qiao, Honglin Tan, Miroslaw Janowski, Piotr Walczak, Yajie Liang, Shu Yang   +10 more
wiley   +1 more source

Late-time Optical and X-Ray Emission Evolution of the Oxygen-rich SN 1996cr

The Astrophysical Journal
When the ejecta of a supernova (SN) interact with the progenitor star's circumstellar environment, a strong shock is driven back into the ejecta, causing the material to become bright optically and in X-rays.
Daniel Patnaude, Kathryn E. Weil, Robert A. Fesen, Dan Milisavljevic, Ralph P. Kraft   +4 more
doaj   +1 more source