J/ApJ/829/119 Known pulsars identified in the TGSS ADR (Frail+, 2016)
Known pulsars identified in the GMRT 150 MHz all-sky survey.
Frail D.A., Jagannathan P., Mooley K.P., Intema H.T.
<Astrophys. J., 829, 119-119 (2016)>
=2016ApJ...829..119F 2016ApJ...829..119F (SIMBAD/NED BibCode)
ADC_Keywords: Pulsars ; Radio continuum ; Surveys
Keywords: catalogs; gamma rays: general; pulsars: general;
radio continuum: general; surveys
Abstract:
We have used the 150MHz radio continuum survey (TGSS ADR) from the
Giant Metrewave Radio Telescope (GMRT) to search for phase-averaged
emission toward all well-localized radio pulsars north of -53°
decl. We detect emission toward 200 pulsars with high confidence
(≥5σ) and another 88 pulsars at fainter levels. We show that
most of our identifications are likely from pulsars, except for a
small number where the measured flux density is confused by an
associated supernova or pulsar-wind nebula, or a globular cluster. We
investigate the radio properties of the 150MHz sample and find an
unusually high number of gamma-ray binary millisecond pulsars with
very steep spectral indices. We also note a discrepancy in the
measured flux densities between GMRT and LOFAR pulsar samples,
suggesting that the flux density scale for the LOFAR pulsar sample may
be in error by approximately a factor of two. We carry out a separate
search of 30 well-localized gamma-ray, radio-quiet pulsars in an
effort to detect a widening of the radio beam into the line of sight
at lower frequencies. No steep-spectrum emission was detected either
toward individual pulsars or in a weighted stack of all 30 images.
Description:
The GMRT was used to carry out a radio continuum survey at a frequency
of 150MHz using a total of 2000hr of observations. The entirety of
these data have recently been reprocessed (Giant Metrewave Radio
Telescope (GMRT) 150MHz all-Sky radio Survey; TGSS ADR,
Intema+ 2017A&A...598A..78I 2017A&A...598A..78I), creating high-quality images of
approximately 90% of the entire sky. The TGSS ADR achieves a median
rms noise level of 3.5mJy/beam and an angular resolution of 25" for
decl.>19°, and 25"x25"/cos(decl.-19°) for more southern decl.
LOFAR has carried out a search for pulsed emission from all northern
radio pulsars (Bilious+ 2016A&A...591A.134B 2016A&A...591A.134B; Kondratiev+
2016A&A...585A.128K 2016A&A...585A.128K). This census was primarily conducted with the
LOFAR high-band antennas (HBAs) between 110 and 188MHz, with 400
channels each of 0.195MHz in width, or a bandwidth of 78MHz. We find
92 pulsars commonly detected in both the LOFAR and TGSS ADR surveys
(Tables 1 and 2).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 102 200 Bright radio pulsars detected at 150MHz
table2.dat 34 88 Faint radio pulsars detected at 150MHz
table3.dat 92 30 Radio quiet pulsars
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See also:
B/psr : ATNF Pulsar Catalogue (Manchester+, 2005)
J/ApJ/814/128 : Timing noise + astrometry of Fermi-LAT pulsars (Kerr+, 2015)
J/ApJ/812/81 : Arecibo Pulsar-ALFA (PALFA) survey. IV. (Lazarus+, 2015)
J/ApJS/208/17 : 2nd Fermi LAT cat. of gamma-ray pulsars (2PC) (Abdo+, 2013)
J/ApJ/742/49 : Variable radio sources in FIRST (Thyagarajan+, 2011)
J/A+AS/147/195 : Pulsar spectra of radio emission (Maron+, 2000)
J/AZh/77/499 : Flux densities of 235 pulsars at 102.5MHz (Malofeev+, 2000)
J/A+AS/136/571 : Pulsars identified from the NRAO VLA Sky Survey (Han+ 1999)
J/ApJS/121/171 : Arecibo polarimetry of 98 pulsars (Weisberg+, 1999)
J/MNRAS/273/411 : Multifrequency fluxes of 280 pulsars (Lorimer+ 1995)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Common pulsar identifier (1)
11- 13 A3 --- m_Name Name component (2)
15- 21 F7.2 ms Per [1.5/3033] Period
23- 27 F5.1 pc/cm3 DM [0/588] Dispersion measure
29- 36 F8.1 mJy St [13/151870] Total 150MHz flux density
from TGSS ADR (Intema+, 2017A&A...598A..78I 2017A&A...598A..78I)
38- 42 F5.1 mJy e_St [3/697] Measured uncertainty in St (3)
44- 50 F7.1 mJy/beam Sp [13/12510] Peak flux density from TGSS ADR
52- 55 F4.1 mJy/beam e_Sp [1/40] Measured uncertainty in Sp (3)
57- 61 F5.2 --- alpha [-3.5/0.5]? Spectral index
63- 66 F4.2 --- e_alpha [0.04/0.7]? Measured uncertainty in alpha
68-102 A35 --- Notes Additional notes
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Note (1): PSR J0459-2010 was a misprint for PSR J0459-0210
(see 2017A&A...598A..78I 2017A&A...598A..78I); corrected at CDS.
Note (2): The period is for J0737-3039A. For J0737-3039B the period is 2773.46.
Note (3): To get a conservative estimate of the uncertainty of the flux density
scale, add a 10% error in quadrature with these measured errors.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Common pulsar identifier
12- 18 F7.2 ms Per [1.6/2518] Period
20- 24 F5.1 pc/cm3 DM [3/652] Dispersion measure
26- 29 F4.1 mJy/beam Sp [4/70] Peak 150MHz flux density
from TGSS ADR (1)
31- 34 F4.1 --- sigma [1.5/23] Local rms noise measured
from the TGSS ADR image
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Note (1): To get a conservative estimate of the uncertainty of the flux density
scale, add a 10% error in quadrature with these measured errors.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Common pulsar identifier
12- 13 I2 h RAh Hour of Right Ascension (J2000)
15- 16 I2 min RAm Minute of Right Ascension (J2000)
18- 23 F6.3 s RAs Second of Right Ascension (J2000)
25- 29 F5.3 s e_RAs [0.001/0.2] Positional Uncertainty in
Right Ascension, in seconds
31- 31 A1 --- DE- Sign of the Declination (J2000)
32- 33 I2 deg DEd Degree of Declination (J2000)
35- 36 I2 arcmin DEm Arcminute of Declination (J2000)
38- 42 F5.2 arcsec DEs Arcsecond of Declination (J2000)
44- 47 F4.2 arcsec e_DEs [0.04/4] Positional Uncertainty in
Declination, in arcseconds
49- 54 F6.2 ms Per [48/445] Period in milliseconds (1)
56- 63 E8.2 s/s Pdot Period derivative in units of s/s (1)
65- 72 E8.2 10-7W Edot Total energy loss rate in erg/s (1)
75- 79 F5.1 mJy/beam Sp [-32/18] Peak flux density at 150MHz
from TGSS ADR
81- 84 F4.1 mJy/beam e_Sp [2/45] Uncertainty in Sp
86- 92 A7 --- Ref Positional Reference (2)
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Note (1): Pulsar parameters are from the ATNF Pulsar Catalog, Manchester et al.
(2005AJ....129.1993M 2005AJ....129.1993M, see Cat. B/psr)
Note (2): Pulsar positional reference as follows:
Kerr = Positions from Kerr et al. (2015, J/ApJ/814/128)
Marelli = Positions from Marelli et al. (2015ApJ...802...78M 2015ApJ...802...78M).
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 16-Dec-2016