DSA-10: a prototype array for localizing fast radio bursts

被引：43

作者：

Kocz, J. ^{[1
]}

Ravi, V ^{[1
]}

Catha, M. ^{[2
]}

D'Addario, L. ^{[1
]}

Hallinan, G. ^{[1
]}

Hobbs, R. ^{[2
]}

Kulkarni, S. ^{[1
]}

Shi, J. ^{[3
]}

Vedantham, H. ^{[1
,4
]}

Weinreb, S. ^{[1
]}

Woody, D. ^{[2
]}

机构：

[1] CALTECH, Cahill Ctr Astron, Pasadena, CA 91125 USA

[2] CALTECH, Owens Valley Radio Observ, Big Pine, CA 93513 USA

[3] CALTECH, Dept Elect Engn, Pasadena, CA 91125 USA

[4] Netherlands Inst Radio Astron, ASTRON, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2019年 / 489卷 / 01期

关键词：

instrumentation: interferometers; instrumentation: miscellaneous;

D O I：

10.1093/mnras/stz2219

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Deep Synoptic Array 10-dish prototype (DSA-10) is an instrument designed to detect and localize fast radio bursts with arcsecond accuracy in real time. Deployed at Owens Valley Radio Observatory, it consists of ten 4.5-m diameter dishes, equipped with a 250-MHz bandwidth dual polarization receiver, centred at 1.4 GHz. The 20 input signals are digitized and field programmable gate arrays are used to transform the data to the frequency domain and transmit it over ethernet. A series of computer servers buffer both raw data samples and perform a real time search for fast radio bursts on the incoherent sum of all inputs. If a pulse is detected, the raw data surrounding the pulse are written to disc for coherent processing and imaging. The prototype system was operational from 2017 June to 2018 February conducting a drift scan search. Giant pulses from the Crab Pulsar were used to test the detection and imaging pipelines. The 10-dish prototype system was brought online again in 2019 March, and will gradually be replaced with the new DSA-110, a 110-dish system, over the next 2 yr to improve sensitivity and localization accuracy.

引用

页码：919 / 927

页数：9

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