Results 71 to 80 of about 148,127 (281)

Versatile Magneto‐Dielectric Response of Epitaxial Thin Films of the High Entropy Oxide Perovskite Nd(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3

Advanced Materials, EarlyView.
The magnetic high entropy oxide perovskite Nd(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 exhibits a substantially large dielectric constant (εr) at room temperature, which shows distinct anionic and cationic contributions in the form of zero and finite bias peaks, respectively, down to its magnetic transition temperature (Tmag).
Roxana Capu, Ryan Thompson, C. Willem Rischau, Marli R. Cantarino, Premysl Marsik, Sergey L. Bud'ko, Neven Biškup, María Varela, Yurii G. Pashkevich, Serhii M. Orel, Thomas Prokscha, Andreas Suter, Jiangtao Zhao, Ugwumsinachi Oji, Marco Bonura, Peter Bencok, Zaher Salman, Stefano Gariglio, Christian Bernhard, Subhrangsu Sarkar   +19 more
wiley   +1 more source

Fermi-LAT detections of the classical novae V1723 Sco and V6598 Sgr in a multi-wavelength context

Astronomy & Astrophysics
Context. Numerous classical novae have been observed to emit γ-rays (E > 100 MeV) detected by the Fermi-LAT. The prevailing hypothesis attributes this emission to the interaction of accelerated particles within shocks in the nova ejecta.
Fauverge P., Jean P., Sokolovsky K., Cheung C. C., Lemoine-Goumard M., Grondin M.-H., Chomiuk L., Dickenson A., Linford J. D., Mukai K., Sokoloski J. L.   +10 more
doaj   +1 more source

Data Management, Infrastructure and Archiving for Time-Domain Astronomy [PDF]

Proceedings of the International Astronomical Union, 2011
AbstractThe workshop on Data Management issues for Time-Domain Astronomy was conceived as a forward-looking discussion of the primary issues that need to be addressed for science in the time domain. The very broad diversity of the science areas presented in the main Symposium made it clear that most of the general issues for astronomy data management ...
openaire   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Real-Time Dedispersion for Fast Radio Transient Surveys, using Auto Tuning on Many-Core Accelerators

, 2016
Dedispersion, the removal of deleterious smearing of impulsive signals by the interstellar matter, is one of the most intensive processing steps in any radio survey for pulsars and fast transients.
Bal, Henri E., Sclocco, Alessio, van Leeuwen, Joeri, van Nieuwpoort, Rob V.   +3 more
core   +2 more sources

MXene‐Coated 3D Printed Horn Antennas for Ku Frequency Band

Advanced Materials Technologies, EarlyView.
An additive manufacturing approach to 3D printing horn antennas and coating them with Ti3C2Tx MXene is proposed. Rapid fabrication of lightweight, high‐performance antennas operating in the Ku‐band (12.4–18 GHz) has been demonstrated. The MXene‐coated antennas exhibit comparable electromagnetic performance to conventional, costly aluminum ones, with ...
Zahra Sarpanah Sourkouhi, Jamal Alhourani, Yury Gogotsi, Mohammad H. Zarifi   +3 more
wiley   +1 more source

Do Neutron Star Ultraluminous X-Ray Sources Masquerade as Intermediate-mass Black Holes in Radio and X-Ray?

The Astrophysical Journal
Ultraluminous X-ray sources (ULXs) were once largely believed to be powered by super-Eddington accretion onto stellar-mass black holes, although in some rare cases, ULXs also serve as potential candidates for (sub-Eddington) intermediate-mass black holes.
Teresa Panurach, Kristen C. Dage, Ryan Urquhart, Richard M. Plotkin, Jeremiah D. Paul, Arash Bahramian, McKinley C. Brumback, Timothy J. Galvin, Isabella Molina, James C. A. Miller-Jones, Payaswini Saikia   +10 more
doaj   +1 more source

A new concept for the combination of optical interferometers and high-resolution spectrographs

, 2009
The combination of high spatial and spectral resolution in optical astronomy enables new observational approaches to many open problems in stellar and circumstellar astrophysics.
A Chelli, A Domiciano de Souza, A Kolmogorov, A Labeyrie, A Meilland, A Quirrenbach, A Quirrenbach, A Quirrenbach, A Quirrenbach, Andreas Quirrenbach, C Tycner, CN Sabbey, D Shulyak, DB McLaughlin, DF Buscher, DF Gray, DL Fried, DNC Lin, F Martin, F Roddier, F Vakili, G Hébrard, G Weigelt, JB Rice, JCB Papaloizou, JD Monnier, JF Donati, JH Shi, JN Winn, JW Goodman, M Marengo, M Nagasawa, M Shao, M Wittkowski, MM Colavita, MS Cunha, N Nardetto, O Kochukhov, PE Ciddor, PG Tuthill, R Tubbs, RA Rossiter, Ramon Vink, RF Griffin, RJ Mathar, RJ Noll, RL Lucke, Robert N. Tubbs, S Albrecht, S Albrecht, S Frink, S Jankov, Simon Albrecht, T Fusco, T Tsuji, VI Tatarski, WJ Tango, Y Wu   +57 more
core   +1 more source

Wet Ball Milling Synthesis of Iron Oxide Nanoparticles for High‐Efficiency, Controllable Magnetic Hyperthermia in Ovarian Cancer

Advanced Materials Technologies, EarlyView.
A wet ball‐milling method is presented to synthesize iron magnetic nanoparticles and evaluate their magnetic hyperthermia performance. Optimized particles (∼270 nm, Ms ∼114 emu/g) achieve ∼50°C heating under clinically safe alternating magnetic fields, while pulsed‐field operation enables controlled temperature regulation (∼30°C).
Shahriar Mostufa, Bahareh Rezaei, Md Shahriar, Karla Mercedes Paz González, Anil Kumar, Changxue Xu, Yun Suk Eo, Ioannis H. Karampelas, Jenifer Gómez‐Pastora, Rui He, Kai Wu   +10 more
wiley   +1 more source

HATPI Preperihelion Time-series Photometry of the Interstellar Comet 3I/ATLAS

The Astronomical Journal
The Hungarian-made Automated Telescope PI Steradians (HATPI) is a recently commissioned time-domain facility at Las Campanas Observatory, Chile, that uses 64 wide-angle, 9.6 cm diameter lenses and back-illuminated CCDs, yielding a mosaic field-of-view of
Joel D. Hartman, Gáspár Á. Bakos, Andrés Jordán, Sarah Thiele, Zoltán Csubry, Geert Jan Talens, Attila Bódi, Sándor Pigai, István Domsa, Anthony Keyes, Vincent Suc, Adriana Gaitan, Antoine Thibault   +12 more
doaj   +1 more source