J/ApJS/234/11 Pulsar rotation measures (Han+, 2018)
Pulsar rotation measures and large-scale magnetic field reversals in the
Galactic disk.
Han J.L., Manchester R.N., van Straten W., Demorest P.
<Astrophys. J. Suppl. Ser., 234, 11 (2018)>
=2018ApJS..234...11H 2018ApJS..234...11H
ADC_Keywords: Pulsars ; Radio continuum ; Polarization ; Stars, distances
Keywords: Galaxy: structure; ISM: magnetic fields; ISM: structure;
pulsars: general
Abstract:
We present the measurements of Faraday rotation for 477 pulsars
observed by the Parkes 64m radio telescope and the Green Bank 100m
radio telescope. Using these results, along with previous measurements
for pulsars and extragalactic sources, we analyze the structure of the
large-scale magnetic field in the Galactic disk. Comparisons of
rotation measures of pulsars in the disk at different distances, as
well as with rotation measures of background radio sources beyond the
disk, reveal large-scale reversals of the field directions between the
spiral arms and interarm regions. We develop a model for the disk
magnetic field, which can reproduce not only these reversals but also
the distribution of the observed rotation measures of background
sources.
Description:
The Parkes 64m observations were made in seven sessions between 2006
August and 2008 February. All observations were in the 20cm band.
The Green Bank 100m telescopes (GBT) observations were made in 2007
November using the 800MHz prime focus receiver. The Green Bank
Astronomy Signal Processor pulsar observing system was used with a
central frequency of 774MHz and a bandwidth of 96MHz.
We have measured rotation measures for 477 pulsars, of which 441 are
either new or improved over previous measurements.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 74 501 Observed rotation measures for 477 pulsars
table2.dat 22 21 Weighted mean rotation measures for pulsars with
repeated measurements
table3.dat 92 90 Comparison of observed rotation measures with
previously published values
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See also:
B/psr : ATNF Pulsar Catalogue (Manchester+, 2005)
VII/156 : Catalog of 558 Pulsars (Taylor+ 1993)
VII/189 : Catalog of Pulsars (Taylor+ 1995)
J/ApJS/145/213 : Rotation measures of compact sources in CGPS (Brown+, 2003)
J/ApJ/642/868 : Rotation measures for 223 pulsars (Han+, 2006)
J/ApJ/663/258 : RMs of extragalactic sources in SGPS (Brown+, 2007)
J/MNRAS/386/1881 : New pulsar rotation measures (Noutsos+, 2008)
J/MNRAS/391/1210 : Characteristics of energetic pulsars (Weltevrede+, 2008)
J/ApJ/702/1230 : Rotation measure image of the sky (Taylor+, 2009)
J/A+A/513/A65 : RMs in the fourth Galactic quadrant (Nota+, 2010)
J/AZh/88/22 : Angles rotation/magnetic moment in pulsars (Malov+, 2011)
J/MNRAS/414/1679 : 315 glitches in 102 pulsar rotations (Espinoza+, 2011)
J/ApJ/728/97 : VLA rotation measures in the Galactic plane (Van Eck+, 2011)
J/ApJS/208/20 : Nine-year WMAP point source catalogs (Bennett+, 2013)
J/MNRAS/436/3557 : HTRU survey: long-period psr polarimetry (Tiburzi+, 2013)
J/A+A/569/A125 : Spiral structure of the Milky Way (Hou+, 2014)
J/other/RAA/14.942 : Rotation measures of radio point sources (Xu+, 2014)
J/A+A/578/A93 : IC 342 multi-frequency radio polarization study (Beck, 2015)
J/MNRAS/453/4485 : Absolute polarimetry obs. of 33 pulsars (Force+, 2015)
http://www.atnf.csiro.au/research/pulsar/psrcat/ : the online ATNF pulsar cat.
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- PSR Pulsar J2000 Name (1)
13- 18 F6.4 s Per [0.001/6.5] Period (1)
20- 26 F7.2 cm-3 DM [2.6/1160] Dispersion Measure (1)
28- 33 F6.2 deg GLON Galactic Longitude (1)
35- 40 F6.2 deg GLAT [-70/75.5] Galactic Latitude (1)
42- 46 F5.2 kpc Dist [0.1/60] Estimated Distance (2)
48- 54 F7.1 rad/m2 RM [-1287/1969] Rotation measure
56- 59 F4.1 rad/m2 e_RM [0.2/31.5] Uncertainty in RM
61- 63 A3 --- Tel Telescope (GBT or PKS=Parkes 64m)
65- 74 A10 "Y-M-D" Date Observation Date (UT)
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Note (1): Values from ATNF Pulsar Catalogue (V1.56)
Note (2): Unless independent distance estimates are available, distances are
based on the YMW16 electron-density model (Yao et al. 2017ApJ...835...29Y 2017ApJ...835...29Y).
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- PSR Pulsar J2000 Name
12- 17 F6.1 rad/m2 RM [-186.5/1574.7] Weighted mean rotation measures
19- 22 F4.1 rad/m2 e_RM [0.2/14.6] Uncertainty in RM
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Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- PSR Pulsar J2000 Name
12- 19 A8 --- OName Other literature name
21- 26 F6.1 rad/m2 RM [-811.4/1174] Rotation measure, this paper
28- 31 F4.1 rad/m2 e_RM [0.2/30.1] Uncertainty in RM
33- 40 F8.2 rad/m2 RM-Ref1 [-1000/1168] Literature Rotation measure 1
42- 47 F6.2 rad/m2 e_RM-Ref1 [0.01/100] Uncertainty in RM-Ref1
49- 54 A6 --- r_RM-Ref1 Reference for RM-Ref1 (1)
56- 56 A1 --- f_RM-Ref1 [*] *: best available literature RM value
58- 63 F6.1 rad/m2 RM-Ref2 [-611/205]? Literature Rotation measure 2
65- 68 F4.1 rad/m2 e_RM-Ref2 [0.1/75]? Uncertainty in RM-Ref2
70- 75 A6 --- r_RM-Ref2 Reference for RM-Ref2 (1)
77- 81 F5.1 rad/m2 RM-Ref3 [-10.8/45.7]? Literature Rotation measure 3
83- 85 F3.1 rad/m2 e_RM-Ref3 [0.1/2]? Uncertainty in RM-Ref2
87- 92 A6 --- r_RM-Ref3 Reference for RM-Ref3 (1)
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Note (1): References as follows:
fdr15 = Force et al. (2015, J/MNRAS/453/4485);
hl87 = Hamilton & Lyne (1987MNRAS.224.1073H 1987MNRAS.224.1073H);
hml+06 = Han et al. (2006, J/ApJ/642/868);
hmm+77 = Hamilton et al. (1977Natur.265..224H 1977Natur.265..224H);
hmq99 = Han et al. (1999MNRAS.306..371H 1999MNRAS.306..371H);
hr10 = Hankins & Rankin (2010AJ....139..168H 2010AJ....139..168H);
jhv+05 = Johnston et al. (2005MNRAS.364.1397J 2005MNRAS.364.1397J);
jkk+07 = Johnston et al. (2007MNRAS.381.1625J 2007MNRAS.381.1625J);
khs+14 = Kerr et al. (2014MNRAS.445..320K 2014MNRAS.445..320K);
man74 = Manchester (1974ApJ...188..637M 1974ApJ...188..637M);
mh04 = Manchester & Han (2004ApJ...609..354M 2004ApJ...609..354M);
njkk08 = Noutsos et al. (2008, J/MNRAS/386/1881);
nms+97 = Navarro et al. (1997ApJ...486.1019N 1997ApJ...486.1019N);
nsk+15 = Noutsos et al. (2015A&A...576A..62N 2015A&A...576A..62N);
qmlg95 = Qiao et al. (1995MNRAS.274..572Q 1995MNRAS.274..572Q);
tjb+13 = Tiburzi et al. (2013, J/MNRAS/436/3557);
tml93 = Taylor et al. (1993, VII/156 - superseded by VII/189);
vdhm97 = van Ommen et al. (1997MNRAS.287..307V 1997MNRAS.287..307V);
wck+04 = Weisberg et al. (2004ApJS..150..317W 2004ApJS..150..317W);
wj08 = Weltevrede & Johnston (2008, J/MNRAS/391/1210);
ymv+11 = Yan et al. (2011MNRAS.414.2087Y 2011MNRAS.414.2087Y).
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Acknowledgements:
JinLin Han [National Astronomical Observatories, Chinese Academy of Sciences]
History:
From electronic version of the journal - Note that PSR J1748-2021A is
missing in the MRT version of the online journal.
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 14-Mar-2018