2019ApJ...878..130K


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.14CEST12:33:25

2019ApJ...878..130K - Astrophys. J., 878, 130-130 (2019/June-3)

Multi-frequency scatter-broadening evolution of pulsars. II. Scatter-broadening of nearby pulsars.

KRISHNAKUMAR M.A., MAAN Y., JOSHI B.C. and MANOHARAN P.K.

Abstract (from CDS):

We present multi-frequency scatter-broadening evolution of 29 pulsars observed with the LOw Frequency ARray (LOFAR) and Long Wavelength Array (LWA). We conducted new observations using LOFAR Low Band Antennae as well as utilized the archival data from LOFAR and LWA. This study has increased the total of all multi-frequency or wide-band scattering measurements up to a dispersion measure (DM) of 150 pc cm–3 by 60%. The scatter-broadening timescale (τsc) measurements at different frequencies are often combined by scaling them to a common reference frequency of 1 GHz. Using our data, we show that the τsc-DM variations are best fitted for reference frequencies close to 200-300 MHz, and scaling to higher or lower frequencies results in significantly more scatter in data. We suggest that this effect might indicate a frequency dependence of the scatter-broadening scaling index (α). However, a selection bias due to our chosen observing frequencies cannot be ruled out with the current data set. Our data did not favor any particular model of the DM-τsc relations, and we do not see a statistically significant break at the low-DM range in this relation. The turbulence spectral index (β) is found to be steeper than what is expected from a Kolmogorov spectrum. This indicates that the local ISM turbulence may have a low wavenumber cutoff or the presence of large-scale inhomogeneities in the line of sight to some of the reported pulsars.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): ISM: general - pulsars: general - scattering

Simbad objects: 45

goto Full paper

goto View the reference in ADS

Number of rows : 45

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 PSR B0037+56 Psr 00 40 32.362 +57 16 24.91           ~ 34 0
2 PSR B0114+58 Psr 01 17 38.661 +59 14 38.39           ~ 85 0
3 PSR B0136+57 Psr 01 39 19.744 +58 14 31.73     13.41     ~ 140 0
4 SH 2-205 HII 03 52 14 +53 25.0           ~ 35 0
5 PSR B0355+54 Psr 03 58 53.7165 +54 13 13.727           ~ 396 1
6 PSR B0402+61 Psr 04 06 30.046 +61 38 40.92           ~ 76 0
7 PSR B0410+69 Psr 04 15 55.653 +69 54 09.89           ~ 37 0
8 LBN 160.09+01.93 HII 05 01.7 +46 20           ~ 6 0
9 PSR B0458+46 Psr 05 02 04.561 +46 54 06.09           ~ 76 0
10 PSR B0523+11 Psr 05 25 56.5000 +11 15 19.100           ~ 99 0
11 V* CM Tau Psr 05 34 31.93830 +22 00 52.1758           ~ 4879 1
12 M 1 SNR 05 34 31.94 +22 00 52.2           ~ 5722 4
13 NAME lam Ori Molecular Ring HII 05 35.3 +09 56           ~ 67 1
14 PSR B0540+23 Psr 05 43 09.65 +23 29 06.1     14.40     ~ 230 0
15 PSR B0611+22 Psr 06 14 17.25120 +22 30 37.3896           ~ 242 0
16 IC 443 SNR 06 18 02.7 +22 39 36     10.11     ~ 1124 1
17 PSR B0626+24 Psr 06 29 05.728 +24 15 43.30           ~ 97 0
18 PSR B0740-28 Psr 07 42 49.0730 -28 22 43.510           ~ 360 0
19 NAME GUM Nebula ISM 07 43 -42.1           ~ 393 1
20 PSR B0823+26 Psr 08 26 51.4 +26 37 23           ~ 474 1
21 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2105 1
22 PSR B0835-41 Psr 08 37 21.1943 -41 35 14.563     12.69     ~ 127 0
23 PSR B0839-53 Psr 08 40 33.7500 -53 32 35.920           ~ 37 0
24 PSR B0919+06 Psr 09 22 14.1600 +06 38 28.800           ~ 255 0
25 PSR B1508+55 Psr 15 09 25.7 +55 31 33           ~ 275 1
26 PSR B1540-06 Psr 15 43 30.1579 -06 20 45.250           ~ 99 0
27 PSR B1541+09 Psr 15 43 38.815 +09 29 16.50           ~ 183 0
28 PSR B1642-03 Psr 16 45 02.0330 -03 17 57.200           ~ 327 0
29 PSR B1749-28 Psr 17 52 58.7130 -28 06 33.900           ~ 241 0
30 PSR J1758+3030 Psr 17 58 25.88 +30 30 24.0           ~ 21 0
31 PSR B1821+05 Psr 18 23 30.9731 +05 50 24.310           ~ 111 0
32 PSR B1822-09 Psr 18 25 30.5940 -09 35 21.200           ~ 312 0
33 PSR B1839+09 Psr 18 41 55.9380 +09 12 08.300           ~ 107 0
34 PSR B1842+14 Psr 18 44 54.8946 +14 54 14.120           ~ 100 0
35 PSR B1848+12 Psr 18 51 13.215 +12 59 35.29           ~ 36 0
36 NAME Sgr Arm PoG 19 00 -30.0           ~ 544 1
37 PSR B1911-04 Psr 19 13 54.1820 -04 40 47.600           ~ 158 0
38 PSR B1946+35 Psr 19 48 25.0067 +35 40 11.057           ~ 156 0
39 PSR B2016+28 Psr 20 18 03.9004752640 +28 39 54.932845661           ~ 336 0
40 PSR B2027+37 Psr 20 29 23.872 +37 44 08.17           ~ 35 0
41 SH 2-109 HII 20 33.6 +40 20           ~ 15 0
42 PSR B2053+36 Psr 20 55 31.3552 +36 30 21.489           ~ 90 0
43 PSR B2148+63 Psr 21 49 58.59 +63 29 43.5           ~ 82 0
44 PSR B2223+65 Psr 22 25 52.36 +65 35 33.8           ~ 294 0
45 PSR B2227+61 Psr 22 29 41.834 +62 05 36.02           ~ 42 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2019ApJ...878..130K and select 'bookmark this link' or equivalent in the popup menu


2021.04.14-12:33:25

© Université de Strasbourg/CNRS

    • Contact