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We present a technique to search for fast radio bursts in records obtained with broadband radiometers having few radio channels. The technique is applied to the RATAN-600 surveys carried out at its Western Sector since the year 2017. A 1D…

Instrumentation and Methods for Astrophysics · Physics 2025-09-16 D. O. Kudryavtsev , S. A. Trushkin , P. G. Tsybulev , V. A. Stolyarov

We report the detection of a burst of emission over a 695.5 MHz-1031.5 MHz bandwidth by the Australian Square Kilometre Array Pathfinder, ASKAP. The burst was localised through analysis of near-field time delays to the long-decommissioned…

The radio-quiet quasar SDSS J1536+0441A shows two broad-line emission systems, recently interpreted as a binary black hole (BBH) system with a subparsec separation; as a double-peaked emitter; or as both types of systems. The NRAO VLBA was…

Astrophysics of Galaxies · Physics 2015-05-18 J. M. Wrobel , A. Laor

We present the first southern-hemisphere all-sky imager and radio-transient monitoring system implemented on two prototype stations of the low-frequency component of the Square Kilometre Array. Since its deployment the system has been used…

The hot gas that constitutes the intracluster medium (ICM) has been studied at X-ray and millimeter/sub-millimeter wavelengths (Sunyaev-Zeldovich effect) for decades. Fast radio bursts (FRBs) offer an additional method of directly measuring…

We have used the 150 MHz radio continuum survey (TGSS ADR) from the Giant Metrewave Radio Telescope (GMRT) to search for phase-averaged emission toward all well-localized radio pulsars north of -53deg Declination. We detect emission toward…

High Energy Astrophysical Phenomena · Physics 2016-10-05 D. A. Frail , P. Jagannathan , K. P. Mooley , H. T. Intema

We analyze the Crab pulsar at ten frequencies from 0.43 to 8.8 GHz using data obtained at the Arecibo Observatory. Giant pulses occur only in the main and interpulse components manifest from radio frequencies to gamma-ray energies.…

Astrophysics · Physics 2009-11-07 J. M. Cordes , N. D. R. Bhat , T. H. Hankins , M. A. McLaughlin , J. Kern

A deep survey of the European Large Area ISO Survey (ELAIS) field in the southern celestial hemisphere (hereinafter S1) has been carried out with the Australia Telescope Compact Array (ATCA) at 1.4 GHz. The S1 region, covering about 4…

The visibilities measured by radio astronomical interferometers include non-astronomical correlated signals that arise from the local environment of the array. These correlated signals are especially important in compact arrays such as…

Instrumentation and Methods for Astrophysics · Physics 2023-11-08 Juhun Kwak , John Podczerwinski , Peter Timbie , Réza Ansari , John Marriner , Albert Stebbins , Fengquan Wu , Haotian Cao , Xuelei Chen , Kai He , Jixia Li , Shijie Sun , Jiacong Zhu

The Square Kilometre Array (SKA) is a planned multi purpose radio telescope with a collecting area approaching 1 million square metres. One of the key science objectives of the SKA is to provide exquisite strong-field tests of gravitational…

Astrophysics · Physics 2015-05-13 R. Smits , M. Kramer , B. Stappers , D. R. Lorimer , J. Cordes , A. Faulkner

This paper presents a search for radio transients at a frequency of 73.8 MHz (4 m wavelength) using the all-sky imaging capabilities of the Long Wavelength Demonstrator Array (LWDA). The LWDA was a 16-dipole phased array telescope, located…

The Five-hundred-meter Aperture Spherical Telescope (FAST) is the world's largest single-dish radio telescope, and the search for extraterrestrial intelligence (SETI) is one of its five key science objectives. We conducted a targeted…

Instrumentation and Methods for Astrophysics · Physics 2025-09-09 Guang-Yuan Song , Zhen-Zhao Tao , Bo-Lun Huang , Yan Cui , Bo Yu , Tong-Jie Zhang

Fast radio burst (FRB) science primarily revolves around two facets: the origin of these bursts and their use in cosmological studies. This work follows from previous redshift-dispersion measure ($z$-DM) analyses in which we model…

Cosmology and Nongalactic Astrophysics · Physics 2026-05-19 Jordan Hoffmann , Clancy W. James , Marcin Glowacki , Jason X. Prochaska , Alexa C. Gordon , Adam T. Deller , Ryan M. Shannon , Stuart D. Ryder

The Murchison Widefield Array (MWA), and its recently-developed Voltage Capture System (VCS), facilitates extending the low-frequency range of pulsar observations at high-time and -frequency resolution in the Southern Hemisphere, providing…

High Energy Astrophysical Phenomena · Physics 2018-01-23 Mengyao Xue , N. D. R. Bhat , S. E. Tremblay , S. M. Ord , C. Sobey , N. A. Swainston , D. L. Kaplan , Simon Johnston , B. W. Meyers , S. J. McSweeney

Radio interferometers provide the means to perform the wide-field-of-view (FoV), high-sensitivity observations required for modern radio surveys. As computing power per cost has decreased, there has been a move towards larger arrays of…

Instrumentation and Methods for Astrophysics · Physics 2025-11-12 Yunpeng Men , Ewan Barr , Amit Bansod , Weiwei Chen , Jason Wu , John Antoniadis , Jan Behrend , Niclas Esser , Oliver Polch , Gundolf Wieching , Tobias Winchen

We have used the Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope to search for intervening 21 cm neutral hydrogen (HI) absorption along the line of sight to 53 bright radio continuum sources. Our observations are…

Distributed phased arrays have recently garnered interest in applications such as satellite communications and high-resolution remote sensing. High-performance coherent distributed operations such as distributed beamforming are dependent on…

Signal Processing · Electrical Eng. & Systems 2024-11-19 Matthew J. Dula , Naim Shandi , Jeffrey A. Nanzer

Astronomical radio bursts disperse while traveling through the interstellar medium. To optimally detect a short-duration signal within a frequency band, we have to precisely compensate for the pulse dispersion, which is a computationally…

Instrumentation and Methods for Astrophysics · Physics 2018-03-28 Barak Zackay , Eran O. Ofek

Physical Layer Authentication (PLA) exploits the spatial uniqueness of wireless channel characteristics in order to authenticate devices without recourse to higher-layer cryptographic protocols, which remain vulnerable to key compromise.…

Signal Processing · Electrical Eng. & Systems 2026-04-14 Sachinkumar B. Mallikarjun , Marvin Reski , Andreas Weinand , Hans D. Schotten

The 70-m DSN's Deep Space Station antenna 14 (DSS-14) at Goldstone has recently been outfitted with instrumentation to enable pulsar searching and timing operation. Systems capable of similar operations are undergoing installation at…

Instrumentation and Methods for Astrophysics · Physics 2017-03-07 J. Kocz , W. Majid , L. White , L. Snedeker , M. Franco
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