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The Deeper, Wider, Faster (DWF) program coordinates observations with telescopes across the electromagnetic spectrum, searching for transients on timescales of milliseconds to days. The tenth DWF observing run was carried out in near…

We present the discovery and subarcsecond localization of a new Fast Radio Burst with the Karl G. Jansky Very Large Array and realfast search system. The FRB was discovered on 2019 June 14 with a dispersion measure of 959 pc/cm3. This is…

We report on the first millisecond timescale radio interferometric search for the new class of transient known as fast radio bursts (FRBs). We used the Very Large Array (VLA) for a 166-hour, millisecond imaging campaign to detect and…

We have conducted two pilot surveys for radio pulsars and fast transients with the Low-Frequency Array (LOFAR) around 140 MHz and here report on the first low-frequency fast-radio burst limit and the discovery of two new pulsars. The first…

We report on the design, deployment, and first results from a scintillation detector deployed at the Murchison Radio-astronomy Observatory (MRO). The detector is a prototype for a larger array -- the Square Kilometre Array Particle Array…

The Bustling Universe Radio Survey Telescope in Taiwan (BURSTT) is a new-generation wide-angle radio telescope specifically designed to survey Fast Radio Bursts (FRBs), energetic millisecond-duration pulses of unknown extragalactic origin.…

天体物理仪器与方法 · 物理学 2026-04-23 Kai-Yang Lin , Chih-Yi Wen , Homin Jiang , Jen-Hung Wang , Sujin Eie , Shih-Hao Wang , Yao-Huan Tseng , Hsien-Chun Tseng , Daniel Baker , Ue-Li Pen

Radio telescope arrays, such as Square Kilometre Array (SKA) and next-generation Very Large Array (ngVLA), require highly precise synchronization of time-frequency references to ensure high-quality observational data. Fiber-based frequency…

天体物理仪器与方法 · 物理学 2025-03-04 Hongfei Dai , Wenlin Li , Zhongwang Pang , Chunyi Li , Dongqi Song , Tong Ww , Bo Wang

The Very Large Array (VLA) has been used in C-configuration to map an area \~0.3 square degrees at 1.4 GHz with 5sigma sensitivities of 0.305, 0.325, 0.380 and 0.450 mJy/beam over four equal subareas. Radio properties are presented for 62…

天体物理学 · 物理学 2009-10-31 Frank J. Masci , J. J. Condon , T. A. Barlow , C. J. Lonsdale , D. L. Shupe , O. Pevunova , F. Fang , R. Cutri

We analyzed four epochs of beamformed EVN data of the Crab Pulsar at 1658.49 MHz. With the high sensitivity resulting from resolving out the Crab Nebula, we are able to detect even the faint high-frequency components in the folded profile.…

高能天体物理现象 · 物理学 2023-09-18 Rebecca Lin , Marten H. van Kerkwijk

We present the first interferometric observation of a zebra-pattern radio burst with simultaneous high spectral (~ 1 MHz) and high time (20 ms) resolution. The Frequency-Agile Solar Radiotelescope (FASR) Subsystem Testbed (FST) and the…

太阳与恒星天体物理 · 物理学 2015-05-28 Bin Chen , Timothy S. Bastian , Dale E. Gary , Ju Jing

An ultra-high-speed waveform digitizer prototype based on gigabit Ethernet has been developed. The prototype is designed to read out signals of detectors to realize the accurate measurement of various physical quantities for plasma…

仪器与探测器 · 物理学 2018-06-22 Weigang Yin , Lian Chen , Feng Li , Ge Jin

A new generation of observational science instruments is dramatically increasing collected data volumes in a range of fields. These instruments include the Square Kilometre Array (SKA), Large Synoptic Survey Telescope (LSST), terrestrial…

We have conducted a search for bright repeating Fast Radio Bursts in our nearby Universe with the Australian Square Kilometer Array Pathfinder (ASKAP) in single-dish mode. We used eight ASKAP 12-m dishes, each equipped with a Chequerboard…

高能天体物理现象 · 物理学 2019-03-27 S. Bhandari , K. W. Bannister , C. W. James , R. M. Shannon , C. M. Flynn , M. Caleb , J. D. Bunton

Radio giant pulses provide a unique opportunity to study the pulsar radio emission mechanism in exquisite detail. Previous studies have revealed a wide range of properties and phenomena, including extraordinarily high brightness…

高能天体物理现象 · 物理学 2015-07-15 Glenn Jones

In almost 30 years of operation, the Very Large Array (VLA) has proved to be a remarkably flexible and productive radio telescope. However, the basic capabilities of the VLA have changed little since it was designed. A major expansion…

天体物理仪器与方法 · 物理学 2015-05-14 R. Perley , P. Napier , J. Jackson , B. Butler , B. Carlson , D. Fort , P. Dewdney , B. Clark , R. Hayward , S. Durand , M. Revnell , M. McKinnon

We report the detection and observed characteristics of giant pulses from the Crab Nebula pulsar (B0531+21) in four frequency bands covering 20-84 MHz using the recently-completed Long Wavelength Array Station 1 (LWA1) radio telescope. In…

高能天体物理现象 · 物理学 2015-06-15 S. W. Ellingson , T. E. Clarke , J. Craig , B. C. Hicks , T. J. W. Lazio , G. B. Taylor , T. L. Wilson , C. N. Wolfe

The Crab pulsar is well-known for its anomalous giant radio pulse emission. Past studies have concentrated only on the very bright pulses or were insensitive to the faint end of the giant pulse luminosity distribution. With our new…

星系天体物理 · 物理学 2015-05-18 R. Karuppusamy , B. W. Stappers , W. van Straten

We have conducted a survey of intermediate Galactic latitudes using the 13-beam 21-cm multibeam receiver of the Parkes 64-m radio telescope. The survey covered the region enclosed by 5 deg < |b| < 15 deg and -100 deg < l < 50 deg with 4,702…

天体物理学 · 物理学 2016-08-30 R. T. Edwards , M. Bailes , W. van Straten , M. C. Britton

The 30-300GHz millimeter wave (mmWave) band is currently being pursued to combat the rising capacity demands in 5G, WiFi, and IoT networks. Due to the high frequency, impulse radio (IR) in this band is better suited for positioning than…

信号处理 · 电气工程与系统科学 2018-08-22 Shree Prasad M. , Trilochan Panigrahi , Mahbub Hassan

Simultaneous measurements of giant pulses from the Crab pulsar were taken at two widely spaced frequencies using the real-time detection of a giant pulse at 1.4 GHz at the Very Large Array to trigger the observation of that same pulse at…

天体物理学 · 物理学 2009-10-31 Shauna Sallmen , D. C. Backer , T. H. Hankins , D. Moffett , S. Lundgren