2022ApJ...926..168W

Query : 2022ApJ...926..168W

2022ApJ...926..168W - Astrophys. J., 926, 168-168 (2022/February-3)

The NANOGrav 12.5 yr Data Set: Polarimetry and Faraday Rotation Measures from Observations of Millisecond Pulsars with the Green Bank Telescope.

WAHL H.M., McLAUGHLIN M.A., GENTILE P.A., JONES M.L., SPIEWAK R., ARZOUMANIAN Z., CROWTER K., DEMOREST P.B., DECESAR M.E., DOLCH T., ELLIS J.A., FERDMAN R.D., FERRARA E.C., FONSECA E., GARVER-DANIELS N., JONES G., LAM M.T., LEVIN L., LEWANDOWSKA N., LORIMER D.R., LYNCH R.S., MADISON D.R., NG C., NICE D.J., PENNUCCI T.T., RANSOM S.M., RAY P., STAIRS I.H., STOVALL K., SWIGGUM J.K. and ZHU W.W.

Abstract (from CDS):

In this work, we present polarization profiles for 23 millisecond pulsars observed at 820 and 1500 MHz with the Green Bank Telescope as part of the NANOGrav pulsar timing array. We calibrate the data using Mueller matrix solutions calculated from observations of PSRs B1929+10 and J1022+1001. We discuss the polarization profiles, which can be used to constrain pulsar emission geometry, and present both the first published radio polarization profiles for nine pulsars and the discovery of very low-intensity average profile components ("microcomponents") in four pulsars. We obtain the Faraday rotation measures for each pulsar and use them to calculate the Galactic magnetic field parallel to the line of sight for different lines of sight through the interstellar medium. We fit for linear and sinusoidal trends in time in the dispersion measure and Galactic magnetic field and detect magnetic field variations with a period of 1 yr in some pulsars, but overall find that the variations in these parameters are more consistent with a stochastic origin.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Pulsars - Interstellar medium - Astronomical techniques

Errata: erratum vol. 941, art. 210 (2022)

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 J0340+41 Psr 03 40 23.2887 +41 30 45.300           ~ 91 0
2 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
3 PSR B0613-02.0 Psr 06 13 43.977070 -02 00 47.34294           ~ 319 1
4 PSR J0636+5129 Psr 06 36 04.84645 +51 28 59.9625           ~ 101 0
5 PSR J0645+5158 Psr 06 45 59.08191 +51 58 14.9210           ~ 65 0
6 PSR J0740+6620 Psr 07 40 45.799 +66 20 33.60           ~ 395 0
7 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2446 1
8 PSR J0931-1902 Psr 09 31 19.116246 -19 02 55.05445           ~ 60 0
9 PSR J1012+5307 Psr 10 12 33.4345449600 +53 07 02.548542576     19.5     DA 419 1
10 PSR J1022+10 Psr 10 22 57.990 +10 01 52.92           ~ 279 2
11 PSR J1025-07 Psr 10 24 38.6991893112 -07 19 19.045523388     19.81 18.78 18.00 ~ 286 1
12 PSR J1125+7819 Psr 11 25 59.851 +78 19 48.70           ~ 36 0
13 CPD-63 2495 HXB 13 02 47.6544015048 -63 50 08.626970292 10.34 10.72 9.98 10.03   O9.5Ve 852 0
14 QSO B1445+101 Bla 14 45 16.46525080 +09 58 36.0727447   18.58 17.78     ~ 408 2
15 PSR J1455-3300 Psr 14 55 47.976991 -33 30 46.40280           ~ 165 1
16 PSR B1556-44 Psr 15 59 41.5290 -44 38 45.740           ~ 140 0
17 PSR J1600-3053 Psr 16 00 51.902514 -30 53 49.45343           ~ 218 0
18 PSR J1614-2230 Psr 16 14 36.50974 -22 30 31.5420           ~ 452 1
19 PSR J1643-1224 Psr 16 43 38.16612 -12 24 58.6334           ~ 260 2
20 PSR J1713+0747 Psr 17 13 49.5367813 +07 47 37.450240           ~ 530 1
21 PSR B1727-47 Psr 17 31 42.21000 -47 44 38.7000           ~ 166 0
22 PSR J1744-1134 Psr 17 44 29.4220844 -11 34 54.801320           ~ 323 1
23 PSR J1747-4036 Psr 17 47 48.715690 -40 36 54.79950           ~ 83 0
24 PSR B1822-14 Psr 18 25 02.927 -14 46 52.60           ~ 92 0
25 PSR J1832-0836 Psr 18 32 27.589497 -08 36 55.14540           ~ 86 0
26 PSR J1909-3744 Psr 19 09 47.42820 -37 44 14.7740           ~ 343 2
27 PSR J1918-0642 Psr 19 18 48.027685 -06 42 34.95735           ~ 146 0
28 PSR B1929+10 Psr 19 32 14.0570 +10 59 33.380           ~ 801 0
29 PSR B1937+21.4 Psr 19 39 38.560096 +21 34 59.13552           ~ 1142 0
30 PSR J2010-1323 Psr 20 10 45.922635 -13 23 56.13270           ~ 93 0
31 PSR J2129-5718 Psr 21 29 22.781548 -57 21 14.33356           ~ 122 1
32 PSR B2145-07.8 Psr 21 45 50.45590 -07 50 18.5900           ~ 336 0
33 PSR J2302+4442 Psr 23 02 46.9789 +44 42 22.102           ~ 124 0

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