Results 151 to 160 of about 378,234 (335)

Ultraviolet Quasiperiodic Eruptions from Star–Disk Collisions in Galactic Nuclei

The Astrophysical Journal Letters
“Quasiperiodic eruptions” (QPE) are recurrent nuclear transients with periods of several hours to almost a day, which thus far have been detected exclusively in the X-ray band.
Itai Linial, Brian D. Metzger
doaj   +1 more source

Discovery of a New X-Ray Transient Source in the Scutum Region with Suzaku [PDF]

, 2007
Shigeo Yamauchi, Ken Ebisawa, Aya Bamba, M. Ishida, K. Iwasawa, Yasuo Tanaka, M. Kokubun, Katsuji Koyama, H. Takahashi, Y. Tsuboi   +9 more
openalex   +1 more source

Single‐Step Conversion of Metal Impurities in CNTs to Electroactive Metallic Nitride Nanoclusters for Electrochemical CO2 Reduction

Advanced Functional Materials, EarlyView.
A single‐step, low‐temperature co‐pyrolysis process removes encapsulated seed metal NPs (10–50 nm) from CNTs, redistributing them as surface‐anchored metal and metal–nitride NCs (1–1.5 nm). Herein, Ni3N NCs achieve an ultra‐low onset overpotential for CO2 reduction to CO with >98% Faradaic efficiency across 100–700 mA cm−2.
Ahmed Badreldin, John Pellessier, Francisco Alejandro Ospina Acevedo, Siyuan Fang, Carter Racine, Jin Feng, Alvin Chang, Yulu Ge, Yang Gang, Shengyao Wang, Xiaokun Yang, Sergei Ivanov, Zhenxing Feng, Yun Hang Hu, Perla B. Balbuena, Ying Li   +15 more
wiley   +1 more source

Gamma Cassiopeiae and the transient X-ray source MX0053+60 [PDF]

, 1977
J. M. Marlborough
openalex   +1 more source

Copper Doping Enhances the Activity and Selectivity of Atomically Precise Ag44 Nanoclusters for Photocatalytic CO2 Reduction

Advanced Functional Materials, EarlyView.
By a simple anti‐Galvanic reaction, up to six copper atoms could be preferably doped into the Ag2(SR)5 staple motifs and Ag20 dodecahedral shell of an atomically precise Ag44(SR)30 nanocluster. When anatase TiO2 is used as substrate, the (AgCu)44/TiO2 photocatalyst exhibited much improved activity in photocatalytic CO2 reduction compared to Ag44/TiO2 ...
Ye Liu, Xi Zheng, Xiufan Liu, Tengyuan Gao, Nicola Pinna, Yu Wang   +5 more
wiley   +1 more source

Novae as a Class of Transient X‐Ray Sources [PDF]

, 2008
K. Mukai, Marina Orio, M. Della Valle
openalex   +3 more sources

Einstein Probe Discovery of EP J182730.0−095633: A New Black Hole X-Ray Binary Candidate in Faint Outburst?

The Astrophysical Journal Letters
Black hole X-ray binaries (candidates) currently identified in our Galaxy are mainly transient sources, with the majority discovered through the detection of their X-ray outbursts.
H. Q. Cheng, Q. C. Zhao, L. Tao, H. Feng, F. Coti Zelati, H. W. Pan, A. L. Wang, Y. N. Wang, M. Y. Ge, A. Rau, A. Marino, L. Zhang, W. J. Zhang, F. Carotenuto, L. Ji, C. C. Jin, D. Y. Li, B. F. Liu, Y. Liu, E. L. Qiao, N. Rea, R. Soria, S. Wang, Z. Yan, W. Yuan, B. Zhang, G. B. Zhang, S. N. Zhang, W. D. Zhang, A. Beardmore, J. S. Bright, X. L. Chen, Z. Fan, S. Y. Fu, J. P. U. Fynbo, J. W. Hu, J. J. Jin, P. G. Jonker, A. K. H. Kong, E. Kuulkers, C. K. Li, H. L. Li, Z. K. Lin, C. X. Liu, H.-Y. Liu, J. Z. Liu, X. W. Liu, Z. Lu, C. Maitra, H. Y. Mu, C.-Y. Ng, Y. L. Qiu, S. Tinyanont, Y. Wang, S. X. Wen, S. S. Weng, Jianfeng Wu, D. Xu, Y. K. Yan, Z. Yan, Y.-P. Yang, P. Zhang, S. Zhang, Q. Zhao, Z. M. Cai, Y. Chen, Y. F. Chen, C. Z. Cui, W. W. Cui, H. B. Hu, M. H. Huang, S. M. Jia, G. Jin, Z. X. Ling, H. Q. Liu, S. L. Sun, X. J. Sun, Y. F. Xu, C. Zhang, M. Zhang, Y. H. Zhang   +80 more
doaj   +1 more source

Transient X-ray source A1118—61 [PDF]

, 1976
P. Davison, P. W. Sanford
openalex   +1 more source

Precise Quantification of Angiogenesis in 3D Biomaterials Using in Vitro CAM Models: Enhancing 3Rs in Research and Minimizing in Vivo Dependency

Advanced Functional Materials, EarlyView.
The study develops elastin–fibrin scaffolds and evaluates angiogenesis using the chorioallantoic membrane (CAM) model. Advanced imaging with confocal microscopy and Indocyanine Green dye enables precise 3D quantification of vascular networks. Findings demonstrate superior microvessel visualization compared to micro‐CT using Microfil and Optiray 350 ...
Ece Melis Er, Martha Patricia Pérez González, Beatriz Gil Garrido, Jasmine Ho, Hae‐Won Kim, Jonathan Campbell Knowles, Jia Hua, Ferdinand Lali, Prasad Sawadkar   +8 more
wiley   +1 more source

Possible Supercritical Accretion on the Ultraluminous X-Ray Source in the Metal-poor Galaxy I Zw 18

The Astrophysical Journal
We present an analysis of X-ray observations of the ultraluminous X-ray source (ULX) in I Zw 18 based on archival data taken with Chandra, XMM-Newton, and Suzaku. This ULX is considered to be an intermediate-mass black hole candidate simply because it is
Marina Yoshimoto, Tomokage Yoneyama, Hirofumi Noda, Hirokazu Odaka, Hironori Matsumoto   +4 more
doaj   +1 more source