Results 61 to 70 of about 163,280 (339)

Unveiling the Emission Mechanisms of Blazar PKS 1510-089. I. Multiwavelength Variability

The Astrophysical Journal
The flat spectrum radio quasar PKS 1510-089 is one of the most active blazars in γ -rays, exhibiting phases of very high activity. This study investigates its variability over a decade across a wide range of wavelengths, from radio to γ -rays.
Alfredo Amador-Portes, Abigail García-Pérez, Vahram Chavushyan, Victor M. Patiño-Álvarez   +3 more
doaj   +1 more source

On Measuring the 21 cm Global Spectrum of the Cosmic Dawn with an Interferometer Array

The Astrophysical Journal, 2023
We theoretically investigate the recovery of the global spectrum (monopole) from visibilities (cross-correlation only) measured by an interferometer array and the feasibility of extracting the 21 cm signal of the cosmic dawn.
Xin Zhang, Bin Yue, Yuan Shi, Fengquan Wu, Xuelei Chen   +4 more
doaj   +1 more source

Ionic Liquid‐Based Reversible Metal Electrodeposition for Adaptive Radiative Thermoregulation Under Extreme Environments

Advanced Functional Materials, EarlyView.
A wideband tunable electrochromic device with dynamic thermal emissivity control is demonstrated. The system enables adaptive heat regulation via electrochemically modulated silver deposition, achieving efficient cooling and heating states. The flexible design ensures mechanical robustness under bending conditions, making it promising for portable and ...
Jiawei Liang, Chenxi Sui, Jiacheng Tian, Genesis Higueros, Ting‐Hsuan Chen, Ronghui Wu, Pei‐Jan Hung, Yang Deng, Natalie Rozman, Willie John Padilla, Po‐Chun Hsu   +10 more
wiley   +1 more source

On the Origin of the X-Ray Emission in Heavily Obscured Compact Radio Sources

The Astrophysical Journal
X-ray continuum emission of active galactic nuclei (AGNs) may be reflected by circumnuclear dusty tori, producing prominent fluorescence iron lines at X-ray frequencies.
Dominika Ł. Król, Małgosia Sobolewska, Łukasz Stawarz, Aneta Siemiginowska, Giulia Migliori, Giacomo Principe, Mark A. Gurwell   +6 more
doaj   +1 more source

A bright radio HH object with large proper motions in the massive star-forming region W75N [PDF]

, 2010
We analyze radio continuum and line observations from the archives of the Very Large Array, as well as X-ray observations from the \emph{Chandra} archive of the region of massive star formation W75N.
Baart, Ballesteros-Paredes, Beltrán, Carlos Carrasco-González, Choi, Devine, Eisloffel, Fish, Galvan-Madrid, Guillem Anglada, Henriksen, Hunter, José M. Torrelles, Luis F. Rodríguez, Omaira González-Martín, Rodríguez, Shepherd, Shepherd, Shepherd, Torrelles, Torrelles, Vázquez-Semanedi, Zapata   +22 more
core   +3 more sources

High‐Performance Low‐Emissivity Paints Enabled by N‐Doped Poly(benzodifurandione) (n‐PBDF) for Energy‐Efficient Buildings

Advanced Functional Materials, EarlyView.
This study introduces a scalable and colored low‐emissivity (low‐e) paint achieved by spraying an ultrathin n‐doped poly(benzodifurandione) (n‐PBDF) coating onto various colored substrates. The low‐e paint enhances thermal regulation by reducing mid‐infrared thermal emissivity to 0.19, thereby stabilizing indoor temperatures across diverse climates ...
Xiaojie Liu, Won‐June Lee, Daniel William Carne, Yanpei Tian, Andrea Felicelli, Yue Lei, Joseph A. Romo, Liyan You, Zixin Xiong, Orlando Gabriel Rivera Gonzalez, Abdulrahman Aljwirah, Qiaoqiang Gan, Jianguo Mei, Xiulin Ruan   +13 more
wiley   +1 more source

Radio Continuum Emission in Polar Ring Galaxies [PDF]

, 2004
We have used the Very Large Array aperture synthesis telescope to conduct a radio continuum survey of polar ring galaxies, at 20 cm and 6 cm. Forty objects were observed at 20 cm with ≃5″ resolution.
A. L. Cox, L. Sparke
semanticscholar   +1 more source

Radio continuum size evolution of star-forming galaxies over 0.35 < z < 2.25 [PDF]

Astronomy & Astrophysics, 2019
To better constrain the physical mechanisms driving star formation, we present the first systematic study of the radio continuum size evolution of star-forming galaxies (SFGs) over the redshift range 0.35 <  z <  2.25.
E. Jiménez-Andrade, B. Magnelli, A. Karim, G. Zamorani, M. Bondi, E. Schinnerer, M. Sargent, E. Romano-D'iaz, M. Novak, P. Lang, F. Bertoldi, E. Vardoulaki, S. Toft, V. Smolčić, K. Harrington, S. Leslie, J. Delhaize, Daizhong Liu, C. Karoumpis, J. Kartaltepe, A. Koekemoer   +20 more
semanticscholar   +1 more source

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

Advanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal, Laura Calderón‐Rodríguez, Oksana Smirnova, Eren Grossmann, Aparna Binu Varghese, Karen Marlenne Garcia Alvarez, Andreas Schneemann, Thomas Hoyer, Ralf Wyrwa, Felix Helmut Schacher, Alexander Knebel   +10 more
wiley   +1 more source

Comparisons between Resolved Star Formation Rate and Gas Tracers in the Strongly Lensed Galaxy SDSS J0901+1814 at Cosmic Noon

The Astrophysical Journal
We report new radio observations of SDSS J090122.37+181432.3, a strongly lensed star-forming galaxy at z = 2.26. We image 1.4 GHz ( L -band) and 3 GHz ( S -band) continuum using the Very Large Array (VLA) and 1.2 mm (band 6) continuum with Atacama Large ...
Qingxiang Chen, Chelsea E. Sharon, Hiddo S. B. Algera, Andrew J. Baker, Charles R. Keeton, Dieter Lutz, Daizhong Liu, Anthony J. Young, Amitpal S. Tagore, Jesus Rivera, Erin K. S. Hicks, Sahar S. Allam, Douglas L. Tucker   +12 more
doaj   +1 more source