RELIABILITY OF RADIO TRANSIENTS DETECTED IN THE NASU SKY SURVEY

被引：6

作者：

Aoki, Takahiro ^{[1
,2
]}

Tanaka, Tai ^{[2
]}

Niinuma, Kotaro ^{[3
]}

Takefuji, Kazuhiro ^{[4
]}

Kida, Sumiko ^{[5
]}

Nakao, Ryota ^{[2
]}

Nomura, Naomi ^{[2
]}

Sugisawa, Kentaro ^{[2
]}

Daishido, Tsuneaki ^{[1
]}

机构：

[1] Waseda Univ, Fac Educ & Integrated Arts & Sci, Shinjuku Ku, Tokyo 1698050, Japan

[2] Waseda Univ, Grad Sch Adv Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan

[3] Yamaguchi Univ, Grad Sch Sci & Engn, Yamaguchi 7538512, Japan

[4] Natl Inst Informat & Commun Technol, Kashima Space Technol Ctr, Kashima, Ibaraki 3148501, Japan

[5] Waseda Univ, Grad Sch Creat Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan

来源：

ASTROPHYSICAL JOURNAL | 2014年 / 781卷 / 01期

关键词：

catalogs; methods: statistical; radio continuum: general; surveys; HIGH GALACTIC LATITUDE; SOURCE GCRT J1745-3009; WIDE-FIELD SURVEY; GAMMA-RAY BURST; NEUTRON-STARS; CRAB PULSAR; ARRAY; SEARCH; EMISSION; CATALOG;

D O I：

10.1088/0004-637X/781/1/10

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This article reports on the reliability of 11 radio transients detected in the Nasu sky survey. We derived false detection rates and evaluated the statistical significance of each transient source. A single source, labeled WJN J1443+3439, was statistically significant at the 10(-5) significance level; the other 10 sources were insignificant. On the basis of this single detection, the sky surface density of live radio transients was estimated to be 2(-1.9)(+9) x 10(-6) deg(-2) at a flux density above 3 Jy and a frequency of 1.42 GHz. Since this result is comparable with other survey results and known transients, WJN J1443+3439 could not be excluded. The sky surface density supported a power-law distribution of source count versus flux density. For transient events, the power-law exponent was approximately -3/2. These results are expected to assist radio variable/transient surveys in next-generation facilities such as the Square Kilometre Array.

引用

页数：12

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