2001ApJ...560..365E

Query : 2001ApJ...560..365E

2001ApJ...560..365E - Astrophys. J., 560, 365-370 (2001/October-2)

A search for submillisecond pulsars.

EDWARDS R.T., VAN STRATEN W. and BAILES M.

Abstract (from CDS):

We have conducted a search of 19 southern Galactic globular clusters for submillisecond pulsars at 660 MHz with the Parkes 64 m radio telescope. To minimize dispersion smearing we used the CPSR baseband recorder, which samples the 20 MHz observing band at the Nyquist rate. By possessing a complete description of the signal we could synthesize an optimal filter bank in software, and in the case of globular clusters of known dispersion measure, much of the dispersion could be removed using coherent techniques. This allowed for very high time resolution (25.6 µs in most cases), making our searches in general sensitive to submillisecond pulsars with flux densities greater than about 3 mJy at 50 cm. No new pulsars were discovered, placing important constraints on the proportion of pulsars with very short spin periods in these clusters.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Globular Clusters: General - Stars: Pulsars: General - Radio Continuum: Stars - Techniques: Miscellaneous

Simbad objects: 33

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Number of rows : 33
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 PSR J0024-7204C Psr 00 23 50.371 -72 04 31.44           ~ 65 1
2 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
3 PSR J0024-7204E Psr 00 24 11.125 -72 05 20.14           ~ 66 1
4 PSR J0024-72D Psr 00 24 13.818 -72 04 43.83           ~ 62 1
5 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1540 0
6 NAME E 3 GlC 09 20 57.07 -77 16 54.8           ~ 185 0
7 NGC 3201 GlC 10 17 36.82 -46 24 44.9           ~ 1001 0
8 NGC 4372 GlC 12 25 45.43 -72 39 32.7   10.86 9.85     ~ 327 0
9 NGC 4833 GlC 12 59 33.92 -70 52 35.4           ~ 467 0
10 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
11 PSR B1534+11 Psr 15 37 09.9603 +11 55 55.554           ~ 453 1
12 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1978 0
13 PSR B1620-26 Psr 16 23 38.2218 -26 31 53.769     21.30     ~ 318 2
14 PSR B1718-19 Psr 17 21 01.48 -19 36 51.0           ~ 97 1
15 NGC 6342 GlC 17 21 10.14 -19 35 14.7     10.01     ~ 310 0
16 Liller 1 Cl* 17 33 24.50 -33 23 20.0           ~ 311 0
17 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
18 PSR B1744-24A Psr 17 48 02.249 -24 46 37.65           ~ 235 0
19 Cl Terzan 5 Cl* 17 48 05.00 -24 46 48.0           ~ 948 1
20 NGC 6440 GlC 17 48 52.67 -20 21 34.5           ~ 592 0
21 PSR B1745-20A Psr 17 48 52.689 -20 21 39.70     10.55     ~ 47 1
22 NGC 6544 GlC 18 07 20.58 -24 59 50.4   11.36 9.90     ~ 332 0
23 PSR J1820-30A Psr 18 23 40.4842 -30 21 39.920           ~ 168 1
24 NGC 6624 GlC 18 23 40.51 -30 21 39.7           ~ 939 1
25 PSR J1824-2452A Psr 18 24 32.009 -24 52 11.10           ~ 529 2
26 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 821 0
27 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1459 0
28 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0
29 PSR J1915+1606 Psr 19 15 27.99999 +16 06 27.4034     22.5     ~ 1032 1
30 PSR B1937+21.4 Psr 19 39 38.560096 +21 34 59.13552           ~ 1142 0
31 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
32 PSR J2129+1209C Psr 21 30 01.2030 +12 10 38.159           ~ 215 2
33 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 1121 0

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