Results 31 to 40 of about 4,766,380 (340)

ASKAP J144834−685644: a newly discovered long period radio transient detected from radio to X-rays [PDF]

Monthly notices of the Royal Astronomical Society
Long-period radio transients (LPTs) are an emerging group of radio transients that show periodic polarised radio bursts with periods varying from a few minutes to a few hours.
A. Anumarlapudi, D. Kaplan, N. Rea, N. Erasmus, Daniel D. Kelson, S. Ocker, E. Lenc, D. Dobie, N. Hurley-Walker, G. Sivakoff, D. Buckley, T. Murphy, J. Pritchard, L. Driessen, K. Rose, A. Zic   +15 more
semanticscholar   +1 more source

Compact steep-spectrum and peaked-spectrum radio sources [PDF]

, 2020
Compact steep-spectrum (CSS) and peaked-spectrum (PS) radio sources are compact, powerful radio sources. The multi-frequency observational properties and current theories are reviewed with emphasis on developments since the earlier review of O’Dea (PASP ...
C. O'Dea, D. J. Saikia
semanticscholar   +1 more source

Direct Imaging Digital Lens for Transient Radio Source Survey [PDF]

International Astronomical Union Colloquium, 1991
AbstractFFT based 2D Dygital Lens is discussed comparing with Fourier synthesis. The sensitivity of constructing Large Array will be 50mJy. Precise manipuration of the radiation field is possible in it.
Tsuneaki Daishido, Kuniyuki Asuma, Kazuhiko Nishibori, Junichi Nakajima, Motoko Yano, Eiichiro Otobe, Naoki Watanabe, Akira Tsuchiya, Seiichiro Iwase   +8 more
openaire   +1 more source

Identifying transient and variable sources in radio images [PDF]

Astronomy and Computing, 2018
With the arrival of a number of wide-field snapshot image-plane radio transient surveys, there will be a huge influx of images in the coming years making it impossible to manually analyse the datasets.
A. Rowlinson, A. Stewart, J. Broderick, J. Swinbank, R. Wijers, D. Carbone, Y. Cendes, R. Fender, A. J. van der Horst, G. Molenaar, B. Scheers, T. Staley, S. Farrell, J. Grießmeier, M. Bell, J. Eislöffel, C. Law, J. van Leeuwen, P. Zarka   +18 more
semanticscholar   +1 more source

Constraints on an optical counterpart for the long-period radio transient GPM J1839-10 [PDF]

Monthly Notices of the Royal Astronomical Society Letters
Long period radio transients (LPTs) are periodic radio sources showing pulsed emission on timescales from minutes to hours. The underlying sources behind this emission are currently unclear.
I. Pelisoli, A. Brown, N. Segura, V. Dhillon, M. Dyer, J. Garbutt, M. Green, D. Jarvis, M. Kennedy, P. Kerry, S. Littlefair, J. McCormac, J. Munday, S. Parsons, E. Pike, D. Sahman, A. Yates   +16 more
semanticscholar   +1 more source

Closing the Net on Transient Sources of Ultrahigh-energy Cosmic Rays [PDF]

Astrophysical Journal
The arrival directions of ultrahigh-energy cosmic rays (UHECRs) observed above 4 × 1019 eV provide evidence of localized excesses that are key to identifying their sources.
S. Marafico, J. Biteau, A. Condorelli, O. Deligny, J. Bregeon   +4 more
semanticscholar   +1 more source

Calculation and Uncertainty of Fast Radio Burst Structure Based on Smoothed Data

The Astrophysical Journal, 2023
Studies of the time-domain structure of fast radio bursts (FRBs) require an accurate estimate of the FRB dispersion measure in order to recover the intrinsic burst shape.
Adrian T. Sutinjo, Danica R. Scott, Clancy W. James, Marcin Glowacki, Keith W. Bannister, Hyerin Cho, Cherie K. Day, Adam T. Deller, Timothy P. Perrett, Ryan M. Shannon   +9 more
doaj   +1 more source

A Matched Filter Technique for Slow Radio Transient Detection and First Demonstration with the Murchison Widefield Array [PDF]

, 2017
Many astronomical sources produce transient phenomena at radio frequencies, but the transient sky at low frequencies (
L. Feng, R. Vaulin, J. Hewitt, R. Remillard, D. Kaplan, T. Murphy, N. Kudryavtseva, P. Hancock, G. Bernardi, J. Bowman, F. Briggs, R. Cappallo, A. A. Deshpande, B. Gaensler, L. Greenhill, B. Hazelton, M. Johnston-Hollitt, C. Lonsdale, S. R. McWhirter, D. Mitchell, M. Morales, E. Morgan, D. Oberoi, S. Ord, T. Prabu, N. Shankar, K. Srivani, R. Subrahmanyan, S. Tingay, R. Wayth, R. Webster, A. Williams, C. Williams   +32 more
semanticscholar   +1 more source

Parkes Transient Events. I. Database of Single Pulses, Initial Results, and Missing Fast Radio Bursts [PDF]

Astrophysical Journal Supplement Series, 2020
A large number of observations from the Parkes 64 m diameter radio telescope, recorded with high time resolution, are publicly available. We have reprocessed all of the observations obtained during the first four years (from 1997–2001) of the Parkes ...
S. Zhang, G. Hobbs, C. Russell, L. Toomey, S. Dai, J. Dempsey, R. Manchester, S. Johnston, L. Staveley-Smith, Xin Wu, Di Li, Y.-Y. Yang, S.-Q. Wang, H. Qiu, R. Luo, C. Wang, Chengmo Zhang, Lin-Hao Zhang, R. Mandow   +18 more
semanticscholar   +1 more source

Subarcminute Localization of 13 Repeating Fast Radio Bursts Detected by CHIME/FRB

The Astrophysical Journal, 2023
We report on improved sky localizations of 13 repeating fast radio bursts (FRBs) discovered by CHIME/FRB via the use of interferometric techniques on channelized voltages from the telescope.
Daniele Michilli, Mohit Bhardwaj, Charanjot Brar, B. M. Gaensler, Victoria M. Kaspi, Aida Kirichenko, Kiyoshi W. Masui, Ryan Mckinven, Cherry Ng, Chitrang Patel, Ketan R. Sand, Paul Scholz, Kaitlyn Shin, Seth R. Siegel, Ingrid Stairs, Tomas Cassanelli, Amanda M. Cook, Matt Dobbs, Fengqiu Adam Dong, Emmanuel Fonseca, Adaeze Ibik, Jane Kaczmarek, Calvin Leung, Aaron B. Pearlman, Emily Petroff, Ziggy Pleunis, Masoud Rafiei-Ravandi, Pranav Sanghavi, J. Richard Shaw, Shriharsh P. Tendulkar   +29 more
doaj   +1 more source