2007PASP..119..112N

Query : 2007PASP..119..112N

2007PASP..119..112N - Publ. Astron. Soc. Pac., 119, 112-121 (2007/January-0)

Receiver gain calibration for radio observations at the Waseda Nasu pulsar observatory.

NIINUMA K., KUNIYOSHI M., MATSUMURA N., TAKEFUJI K., KIDA S., TAKEUCHI A., NAKAMURA R., SUZUKI S., ICHIKWA H., ASUMA K. and DAISHIDO T.

Abstract (from CDS):

We have started programs at the Waseda Nasu Pulsar Observatory to identify EGRET γ-ray sources and to search for radio transients. The observed frequency was 1.4±0.01 GHz, and eight-element spherical dish antennas were used as four pairs of interferometers, with each element 20 m in diameter. The observable region was ±5° from zenith, covering a region of sky 32°≤δ≤42° in declination. For accurate flux measurement, we developed a receiver gain calibration system using Johnson-Nyquist noise; the system was compact, inexpensive, and easily maintained. We describe the system and recent results of radio source monitoring.

Abstract Copyright: ∼

Journal keyword(s): Instrumentation: Interferometers

Nomenclature: WJN JHHMM+DDMM N=1.

Simbad objects: 14

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Number of rows : 14
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 3C 41.0 rG 01 26 44.388 +33 13 11.22   21       ~ 172 1
2 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
3 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
4 3C 111 Sy1 04 18 21.2772425736 +38 01 35.801359968   19.75 18.05     ~ 1002 2
5 2C 396 QSO 04 32 36.50262174 +41 38 28.4497778     20.0     ~ 231 1
6 3C 134 rG 05 04 42.190 +38 06 11.40   20       ~ 90 1
7 6C 161147+342017 Bla 16 13 41.06424322 +34 12 47.9088535   17.98 17.46 17.07   ~ 673 1
8 V* V1033 Sco HXB 16 54 00.1423963019 -39 50 44.761701340       16.14   F3-6IV 1980 0
9 4C 33.48 Rad 19 24 17.490 +33 29 30.09           ~ 33 1
10 WJN J1954+3600 Rad 19 54 35 +36 00.0           ~ 1 0
11 MCG+07-41-003 Bla 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2537 2
12 CTB 82 Mas 20 01.7 +33 33           ~ 40 0
13 NAME Cyg X Cld 20 30 04.7973633 +40 51 36.002197           ~ 962 1
14 MITG J2001+3332 Rad ~ ~           ~ 1 0

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