2007A&A...462..699K

Query : 2007A&A...462..699K

2007A&A...462..699K - Astronomy and Astrophysics, volume 462, 699-702 (2007/2-1)

Turn-over in pulsar spectra around 1 GHz.

KIJAK J., GUPTA Y. and KRZESZOWSKI K.

Abstract (from CDS):

The main aim is to investigate the possibility of a high frequency turn-over in the radio spectrum of pulsars. Using the GMRT, multi-frequency flux density measurements of several candidate pulsars have been carried out and their spectra have been extended to lower frequencies. We present the first direct evidence for turn-over in pulsar radio spectra at high frequencies. A total of 3 pulsars (including 2 new ones from this study) are now shown to have a turn-over frequency >1GHz, and one is shown to have a turn-over at ∼600MHz.

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Journal keyword(s): pulsars: general

Simbad objects: 23

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Number of rows : 23
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2815 2
2 PSR B1054-62 Psr 10 56 25.5840 -62 58 47.690           ~ 79 0
3 PSR B1240-64 Psr 12 43 17.2912183824 -64 23 23.082548820           ~ 109 0
4 3C 283 rG 13 11 39.3 -22 16 41   20       ~ 91 1
5 PSR B1557-50 Psr 16 00 53.0150 -50 44 21.300           ~ 107 0
6 PSR B1641-45 Psr 16 44 49.28482 -45 59 09.6360     12.60     ~ 198 0
7 PSR B1714-34 Psr 17 17 20.244 -34 24 59.60           ~ 44 0
8 PSR B1736-31.4 Psr 17 39 24.304 -31 31 15.30           ~ 35 0
9 PSR B1740-31 Psr 17 43 36.7000 -31 50 21.000           ~ 53 0
10 PSR B1815-14 Psr 18 18 23.8700 -14 22 45.000           ~ 54 0
11 PSR B1819-14 Psr 18 22 54.042 -14 00 02.40           ~ 30 0
12 PSR B1820-11 Psr 18 23 40.30 -11 15 11.0           ~ 79 2
13 PSR B1822-14 Psr 18 25 02.927 -14 46 52.60           ~ 82 0
14 PSR B1822-09 Psr 18 25 30.5940 -09 35 21.200           ~ 346 0
15 PSR B1823-11 Psr 18 26 05.472 -11 31 43.60           ~ 25 0
16 PSR B1823-13 Psr 18 26 13.06 -13 34 48.1           ~ 420 1
17 PSR B1828-10 Psr 18 30 47.566 -10 59 27.90           ~ 168 1
18 PSR B1830-08 Psr 18 33 40.2640 -08 27 32.000           ~ 136 1
19 PSR B1834-04 Psr 18 36 51.7904 -04 36 37.680           ~ 35 0
20 PSR B1838-04 Psr 18 41 05.6623 -04 25 19.630           ~ 59 0
21 PSR J2305+4707 Psr 23 05 55.842 +47 07 45.32           ~ 220 1
22 PSR B2319+60 Psr 23 21 55.213 +60 24 30.71     13.80     ~ 191 0
23 3C 468.1 G 23 50 54.8 +64 40 20           ~ 70 1

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