Results 31 to 40 of about 93,637 (312)

Extragalactic Astrophysics With Next-Generation CMB Experiments

Frontiers in Astronomy and Space Sciences, 2019
Planck, SPT, and ACT surveys have clearly demonstrated that Cosmic Microwave Background (CMB) experiments, while optimized for cosmological measurements, have made important contributions to the field of extragalactic astrophysics in the last decade ...
Gianfranco De Zotti, Matteo Bonato, Matteo Bonato, Matteo Bonato, Mattia Negrello, Tiziana Trombetti, Carlo Burigana, Carlo Burigana, Carlo Burigana, Diego Herranz, Diego Herranz, Marcos López-Caniego, Zhen-Yi Cai, Laura Bonavera, Joaquin González-Nuevo   +14 more
doaj   +1 more source

Variable Radio Sources [PDF]

Symposium - International Astronomical Union, 1982
Flux variations are a common feature of flat spectrum compact extra-galactic radio sources. Detailed analysis and quantitative comparisons with theoretical models (e.g. van der Laan, 1966) are difficult due to the complex characteristics of the flux variations, which generally appear to consist of different outbursts blended together in time ...
R. Fanti, L. Padrielli, M. Salvati
openaire   +1 more source

Multiband Study of Radio Sources of the RCR Catalogue with Virtual Observatory Tools

Open Astronomy, 2012
We present early results of our multiband study of the RATAN Cold Revised (RCR) catalogue obtained from seven cycles of the “Cold” survey carried with the RATAN-600 radio telescope at 7.6 cm in 1980-1999, at the declination of the SS 433 source.
Zhelenkova O. P., Soboleva N. S., Majorova E. K., Temirova A. V.   +3 more
doaj   +1 more source

A CHIME/FRB Study of Burst Rate and Morphological Evolution of the Periodically Repeating FRB 20180916B

The Astrophysical Journal, 2023
FRB 20180916B is a repeating fast radio burst (FRB) with a 16.3 day periodicity in its activity. In this study, we present morphological properties of 60 FRB 20180916B bursts detected by CHIME/FRB between 2018 August and 2021 December.
Ketan R. Sand, Daniela Breitman, Daniele Michilli, Victoria M. Kaspi, Pragya Chawla, Emmanuel Fonseca, Ryan Mckinven, Kenzie Nimmo, Ziggy Pleunis, Kaitlyn Shin, Bridget C. Andersen, Mohit Bhardwaj, P. J. Boyle, Charanjot Brar, Tomas Cassanelli, Amanda M. Cook, Alice P. Curtin, Fengqiu Adam Dong, Gwendolyn M. Eadie, B. M. Gaensler, Jane Kaczmarek, Adam Lanman, Calvin Leung, Kiyoshi W. Masui, Mubdi Rahman, Ayush Pandhi, Aaron B. Pearlman, Emily Petroff, Masoud Rafiei-Ravandi, Paul Scholz, Vishwangi Shah, Kendrick Smith, Ingrid Stairs, David C. Stenning   +33 more
doaj   +1 more source

Quantifying radio source morphology

Publications of the Astronomical Society of Australia
Abstract The advent of next-generation telescope facilities brings with it an unprecedented amount of data, and the demand for effective tools to process and classify this information has become increasingly important. This work proposes a novel approach to quantify the radio galaxy morphology, through the development of a series of algorithmic ...
Lachlan J. Barnes, Andrew M. Hopkins, Lawrence Rudnick, Heinz Andernach, Michael Cowley, Nikhel Gupta, Ray P. Norris, Stanislav S. Shabala, Tayyaba Zafar   +8 more
openaire   +2 more sources

Radio variability properties for radio sources [PDF]

Astronomy & Astrophysics, 2006
In this paper, we used the database of the university of Michigan Radio Astronomy Observatory (UMRAO) at three (4.8 GHz, 8.0 GHZ, and 14.5 GHz) radio frequency to analyze the radio light curves by the power spectral analysis method in search of possible periodicity.
J. H. Fan, Y. Liu, Y. H. Yuan, T. X. Hua, H. G. Wang, Y. X. Wang, J. H. Yang, A. C. Gupta, J. Li, J. L. Zhou, S. X. Xu, J. L. Chen   +11 more
openaire   +2 more sources

Continued Radio Observations of the Persistent Radio Source Associated with FRB 20190520B Provide Insights into Its Origin

The Astrophysical Journal
Follow-up studies of persistent emission from fast radio burst (FRB) sources are critical for understanding their elusive emission mechanisms and the nature of their progenitors.
Arvind Balasubramanian, Mohit Bhardwaj, Shriharsh P. Tendulkar   +2 more
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

A Possible Periodic Rotation Measure Evolution in the Repeating FRB 20220529

The Astrophysical Journal Letters
Fast radio bursts (FRBs) are mysterious millisecond-duration radio transients of extragalactic origin. Some of them repeat, while others apparently do not.
Yi-Fang Liang, Ye Li, Zhen-Fan Tang, Xuan Yang, Song-Bo Zhang, Yuan-Pei Yang, Fa-Yin Wang, Bao Wang, Di Xiao, Qing Zhao, Jun-Jie Wei, Jin-Jun Geng, Jia-Rui Niu, Jun-Shuo Zhang, Guo Chen, Min Fang, Xue-Feng Wu, Zi-Gao Dai, Wei-Wei Zhu, Peng Jiang, Bing Zhang   +20 more
doaj   +1 more source

Evolution of giant radio sources [PDF]

New Astronomy Reviews, 2002
5 pages, 4 figures, to appear in `Life Cycles of Radio Galaxies', ed. J.
Ishwara-Chandra, C. H., Saikia, D. J.
openaire   +2 more sources