J/ApJ/874/64 5GHz TMRT observations of 71 pulsars (Zhao+, 2019)
5.0GHz TMRT observations of 71 pulsars.
Zhao R.-S., Yan Z., Wu X.-J., Shen Z.-Q., Manchester R.N., Liu J.,
Qiao G.-J., Xu R.-X., Lee K.-J.
<Astrophys. J., 874, 64 (2019)>
=2019ApJ...874...64Z 2019ApJ...874...64Z
ADC_Keywords: Pulsars; Radio lines
Keywords: pulsars: general ; radiation mechanisms: non-thermal
Abstract:
We present integrated pulse profiles at 5GHz for 71 pulsars, including
eight millisecond pulsars (MSPs), obtained using the Shanghai Tian Ma
Radio Telescope. Mean flux densities and pulse widths are measured.
For 19 normal pulsars and one MSP, these are the first detections at
5GHz --and for a further 19, including five MPSs, the profiles have a
better signal-to-noise ratio than previous observations. Mean flux
density spectra between 400MHz and 9GHz are presented for 27 pulsars
and correlations of power-law spectral index are found with
characteristic age, radio pseudo-luminosity, and spin-down luminosity.
Mode changing was detected in five pulsars. The separation between the
main pulse and interpulse is shown to be frequency independent for six
pulsars, but a frequency dependence of the relative intensity of the
main pulse and interpulse is found. The frequency dependence of
component separations is investigated for 20 pulsars, and three groups
are found: in seven cases, the separation between the outmost leading
and trailing components decreases with frequency, roughly in agreement
with radius-to-frequency mapping; in 11 cases, the separation is
nearly constant; in the remaining two cases, the separation between
the outmost components increases with frequency. We obtain the
correlations of pulse widths with pulsar period and estimate the core
widths of 23 multicomponent profiles and conal widths of 17
multicomponent profiles at 5GHz using Gaussian fitting, and we discuss
the width-period relationship at 5GHz compared with the results at at
1.0 and 8.6GHz.
Description:
Observations of a sample of 71 pulsars at 5GHz were performed with the
Shanghai 65m Tian Ma Radio Telescope (TMRT) between 2015 May (MJD 57155)
and 2017 December (MJD 58114).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
pulsars.dat 10 71 List of pulsars; table added by CDS
table1.dat 110 240 Parameters for the 71 pulsars observed with the TMRT
--------------------------------------------------------------------------------
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/MNRAS/273/411 : Multifrequency fluxes of 280 pulsars (Lorimer+ 1995)
J/MNRAS/301/235 : Multifrequency polarimetry of 300 pulsars (Gould+, 1998)
J/ApJS/121/171 : Arecibo polarimetry of 98 pulsars (Weisberg+, 1999)
J/A+AS/147/195 : Pulsar spectra of radio emission (Maron+, 2000)
J/MNRAS/335/275 : Parkes Multi-Beam Pulsar Survey new PSR (Morris+, 2002)
J/MNRAS/342/1299 : Parkes Multi-Beam Pulsar Survey. III. (Kramer+, 2003)
J/MNRAS/352/1439 : Parkes Multi-Beam Pulsar Survey. IV. (Hobbs+, 2004)
J/MNRAS/353/1311 : Long-term timing observations of 374 pulsars (Hobbs+, 2004)
J/MNRAS/391/1210 : Characteristics of energetic pulsars (Weltevrede+, 2008)
J/A+A/586/A92 : Pulse profiles of 100 radio pulsars (Pilia+, 2016)
J/ApJS/230/7 : Spectral flux densities from 50MHz to 50GHz (Perley+, 2017)
J/MNRAS/473/4436 : Spectral properties of 441 radio pulsars (Jankowski+, 2018)
Byte-by-byte Description of file: pulsars.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- PSR Pulsar identifier (J2000)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- PSR Pulsar identifier (J2000)
11 A1 --- f_PSR [im] Flag on Pulsar (1)
13- 17 I5 d MJD [57155/58114]? Modified Julian Date (2)
19 A1 --- f_MJD [d] Flag on MJD (3)
21- 26 F6.1 MHz Freq [4820/5124]? Central frequency (2)
28- 30 I3 min Ton [8/140]? Integration time (2)
32- 38 F7.3 mJy S [0.05/116.2] Flux density at Freq
40- 45 F6.3 mJy e_S [0.02/37.9] Uncertainty in S
46 A1 --- f_S [*] Flag on S (4)
48- 51 F4.1 deg Delphi [1.2/77]? Separation of outer-most profile
components
53- 56 F4.2 deg e_Delphi [0.1/2.6]? Uncertainty in Delphi
57 I1 --- Nc [2/5]? Number of identifiable components
59- 63 F5.2 deg W50 [1.3/57.6] Pulse width at 50% of profile max
65- 68 F4.2 deg e_W50 [0.01/4]? Uncertainty in W50
70- 74 F5.2 deg W10 [4.1/96.9]? Pulse width at 10% of profile max
76- 79 F4.2 deg e_W10 [0.02/7.7]? Uncertainty in W10
81- 84 F4.2 mJy S5Lit1 [0.07/9.1]? 1st literature flux density at 5GHz
86- 89 F4.2 mJy e_S5Lit1 [0.03/0.3]? Uncertainty in S5Lit1
91 I1 --- r_S5Lit1 [1/4]? Reference code for S5Lit1 (5)
93- 97 F5.2 mJy S5Lit2 [0.08/41.3]? 2nd literature flux density at 5GHz
99-101 F3.1 mJy e_S5Lit2 [0.1/0.2]? Uncertainty in S5Lit2
103 I1 --- r_S5Lit2 [2/4]? Reference code for S5Lit2 (5)
105-108 F4.2 mJy S5Lit3 [0.85]? 3rd literature flux density at 5GHz
110 I1 --- r_S5Lit3 [3]? Reference code for S5Lit3 (5)
--------------------------------------------------------------------------------
Note (1): Flag as follows:
i = interpulse emission (8 occurrences); see Section 4.3.
m = distinct emission mechanism (9 occurrences); see Section 4.4.
Note (2): When these columns are blank the following columns are the
averaged values.
Note (3): Flag as follows:
d = MJDs corresponding to the profiles in Fig.1.
For three pulsars (PSRs J0538+2817, J1844+00 and J1900-2600) two or
three observations are summed to form the profile in Fig.1.
Note (4): Flag as follows:
* = Flux densities calibrated using the calibrators
(3C48, 3C123, 3C196 or 3C295).
Note (5): Reference as follows:
1 = Kijak et al. (1998A&AS..127..153K 1998A&AS..127..153K);
2 = Seiradakis et al. (1995A&AS..111..205S 1995A&AS..111..205S);
3 = von Hoensbroech & Xilouris (1997A&AS..126..121V 1997A&AS..126..121V);
4 = Kramer et al. (1999ApJ...526..957K 1999ApJ...526..957K).
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 27-Aug-2020