2025ApJS..281....8L

Query : 2025ApJS..281....8L

2025ApJS..281....8L - Astrophys. J., Suppl. Ser., 281, 8 (2025/November-0)

FAST Observations of the Microstructure in Interpulse Pulsars.

LI W., DANG S., WANG N., ZHANG C., WANG J., YUAN J., KOU F., CAI Y., ZHOU Z., WANG S., SHANG L., BAI J., WEN Y., ZOU J. and YU Z.

Abstract (from CDS):

In this study, we investigate the microstructure properties of four pulsars (PSRs J0953+0755 (B0950+08), J0627+0706, J0826+2637 (B0823+26), and J1946+1805 (B1944+17)) using the Five-hundred-meter Aperture Spherical radio Telescope, with particular emphasis on identifying microstructure within the interpulse (IP). Through the application of autocorrelation function analysis and fast Fourier transform techniques, we have systematically examined the periodicity of microstructure in these pulsars. Our findings represent the first successful detection of microstructure within the IP. Furthermore, we conducted a comprehensive statistical analysis comparing the characteristic timescales (τμ) and the characteristic periods Pμ of quasiperiodic microstructure between the main pulse (MP) and the IP, and our results indicate that the τμ and Pμ of microstructure across components appear consistent within measurement errors for PSR J0627+0706, but the microstructure in the IP is relatively smaller than that in the MP for PSR J0953+0755. Furthermore, the relationship between Pμ of microstructure and the rotation period in neutron star populations was reconfirmed: Pμ (ms) = (1.337 ± 0.114) × P(s)(1.063±0.038).

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Pulsars

Simbad objects: 49

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Number of rows : 49
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 J0139+3336 Psr 01 39 57.23 +33 36 59.7           ~ 24 0
2 FRB 20191221A rB 02 57 21.600 +79 43 12.00           ~ 34 0
3 PSR B0301+19 Psr 03 04 33.115 +19 32 51.40           ~ 247 0
4 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
5 FRB 20210206A rB 03 35 27 +52 44.6           ~ 9 0
6 PSR J0437-47 Psr 04 37 15.7994581776 -47 15 08.544351636           DC 1032 0
7 FRB 20201124A rB 05 07 57.600 +26 11 24.00           ~ 307 0
8 PSR B0525+21 Psr 05 28 52.308 +22 00 01.00     14.30     ~ 370 0
9 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
10 PSR J0546+2441 Psr 05 46 28.8 +24 41 21           ~ 14 0
11 PSR J0627+0706 Psr 06 27 44.17200 +07 06 33.0000           ~ 33 0
12 PSR B0656+14 Psr 06 59 48.18800 +14 14 19.2000   24.85 24.90     ~ 943 1
13 PSR B0751+32 Psr 07 54 40.688 +32 31 56.20           ~ 88 0
14 PSR B0809+74 Psr 08 14 59.500 +74 29 05.70           ~ 425 0
15 PSR B0823+26 Psr 08 26 51.5068 +26 37 21.297           ~ 541 1
16 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2446 1
17 PSR B0834+06 Psr 08 37 05.64620 +06 10 15.8700           ~ 472 0
18 PSR J0901-4046 Psr 09 01 29.2490 -40 46 02.984           ~ 48 0
19 PSR B0950+08 Psr 09 53 09.31210 +07 55 36.9000           ~ 806 2
20 FRB 20200120E rB 09 57 56.7 +68 49 32           ~ 219 0
21 PSR J1022+10 Psr 10 22 57.990 +10 01 52.92           ~ 279 2
22 PSR B1133+16 Psr 11 36 03.09460 +15 51 15.9000           ~ 715 0
23 PSR B1237+25 Psr 12 39 40.386 +24 53 49.87           ~ 497 1
24 FRB 20210213A rB 12 50.4 +83 17           ~ 8 0
25 FRB 20201020A rB 13 51 25.0 +49 02 06           ~ 18 0
26 PSR J1622-4950 Psr 16 22 44.80000 -49 50 54.5000           ~ 169 0
27 GLEAM-X J162759.5-523504 Psr 16 27 59.50 -52 35 04.3           ~ 51 0
28 PSR J1713+0747 Psr 17 13 49.5367813 +07 47 37.450240           ~ 530 1
29 PSR B1737+13 Psr 17 40 07.3455 +13 11 56.690           ~ 191 0
30 PSR J1740+1000 Psr 17 40 25.91 +10 00 06.0           ~ 110 0
31 PSR J1744-1134 Psr 17 44 29.4220844 -11 34 54.801320           ~ 323 1
32 AX J1809.8-1943 Psr 18 09 51.07 -19 43 51.8           ~ 532 0
33 SWIFT J1818.0-1607 N* 18 18 00.23 -16 07 53.0           ~ 109 0
34 NAME ASKAP J183950.5-075635.0 Rad 18 39 50.5730 -07 56 39.170           ~ 10 0
35 PSR J1910+0714 Psr 19 10 18.597 +07 14 11.80           ~ 26 0
36 PSR B1910+20 Psr 19 12 43.3391 +21 04 33.926           ~ 81 0
37 PSR J1913+1333 Psr 19 13 17.975 +13 30 32.80           ~ 44 0
38 PSR J1918-0449 Psr 19 18 36.070 -04 49 49.80           ~ 9 0
39 PSR B1919+21 Psr 19 21 44.815 +21 53 02.25           ~ 411 0
40 PSR B1929+10 Psr 19 32 14.0570 +10 59 33.380           ~ 801 0
41 PSR B1944+17 Psr 19 46 53.044 +18 05 41.24           ~ 252 0
42 PSR B2002+31 Psr 20 04 52.286 +31 37 10.01           ~ 138 0
43 PSR B2016+28 Psr 20 18 03.8999255016 +28 39 54.940329468           ~ 374 0
44 PSR B2020+28 Psr 20 22 37.0671 +28 54 23.104           ~ 330 1
45 PSR B2034+19 Psr 20 37 14.54 +19 42 54.3           ~ 41 0
46 PSR B2110+27 Psr 21 13 04.3506 +27 54 01.160           ~ 115 0
47 PSR J2144-3939 Psr 21 44 12.01000 -39 33 58.4000           ~ 145 0
48 PSR B2145-07.8 Psr 21 45 50.45590 -07 50 18.5900           ~ 336 0
49 PSR B2315+21 Psr 23 17 57.8419 +21 49 48.019           ~ 119 0

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