J/MNRAS/359/1524 10 new pulsars in Arecibo drift-scan survey (Lorimer+, 2005)
Discovery of 10 pulsars in an Arecibo drift-scan survey.
Lorimer D.R., Xilouris K.M., Fruchter A.S., Stairs I.H., Camilo F.,
Vazquez A.M., Eder J.A., McLaughlin M.A., Roberts M.S.E., Hessels J.W.T.,
ransom S.M.
<Mon. Not. R. Astron. Soc., 359, 1524-1530 (2005)>
=2005MNRAS.359.1524L 2005MNRAS.359.1524L
ADC_Keywords: Pulsars ; Radio sources
Keywords: pulsars: general - pulsars: individual: J0407+1607
Abstract:
We present the results of a 430-MHz survey for pulsars conducted
during the upgrade to the 305-m Arecibo radio telescope. Our survey
covered a total of 1147deg2 of sky using a drift-scan technique. We
detected 33 pulsars, 10 of which were not known prior to the survey
observations. The highlight of the new discoveries is PSR J0407+1607,
which has a spin period of 25.7ms, a characteristic age of 1.5Gyr
and is in a 1.8-yr orbit about a low-mass (>0.2M) companion. The long
orbital period and small eccentricity (e=0.0009) make the binary
system an important new addition to the ensemble of binary pulsars
suitable to test for violations of the strong equivalence principle.
We also report on our initially unsuccessful attempts to detect
optically the companion to J0407+1607, which imply that its absolute
visual magnitude is >12.1. If, as expected on evolutionary grounds,
the companion is an He white dwarf, our non-detection implies a
cooling age of least 1Gyr.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 46 39 STScI/NAIC survey detection statistics.
table3.dat 118 9 Parameters for the nine isolated pulsars
derived from the tempo timing analysis
table5.dat 67 10 Observed and derived parameters for the 10
pulsars discovered in the survey
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See also:
VII/189 : Catalog of Pulsars (Taylor+ 1995)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- PSR PSR designation (1)
11 A1 --- n_PSR [*] * for newly discovered pulsars
13- 20 F8.3 ms Per Period
23- 25 I3 pc/cm3 DM Dispersion measure
27- 31 F5.1 mJy S400MHz ?=- Flux density at 400MHz
32 A1 --- n_S400MHz Note on S400MHz (2)
34- 36 F3.1 arcmin Offset Offset from the beam centre
38- 41 F4.1 --- S/N ?=- Observed signal-to-noise (3)
43- 46 I4 --- S/Np ?=- Predicted signal-to-noise (3)
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Note (1): Listed are the 10 newly discovered pulsars (marked with asterisks),
23 previously known pulsars detected and six previously known pulsars
which lie within 5-arcmin of a pointing, which were not detected.
Note (2): Flux densities marked with a + have been estimated from catalogued
S1400 values assuming a spectral index of -1.6.
Note (3): Blank S/N entries show the non-detections
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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 --- PSR PSR designation
12- 13 I2 h RAh Right ascension (J2000)
15- 16 I2 min RAm Right ascension (J2000)
18- 24 F7.4 s RAs Right ascension (J2000)
26- 30 F5.4 s e_RAs rms uncertainty on RA
32 A1 --- DE- Declination sign (J2000)
33- 34 I2 deg DEd Declination (J2000)
36- 37 I2 arcmin DEm Declination (J2000)
39- 43 F5.2 arcsec DEs Declination (J2000)
45- 48 F4.2 arcsec e_DEs rms uncertainty on DE
50- 65 F16.14 s Per Period (1)
67- 70 I4 10-14s e_Per rms uncertainty on Per
72- 76 I5 d Epoch Epoch in MJD
78- 87 F10.6 10-15 dP/dt Period derivative
89- 95 F7.6 10-15 e_dP/dt rms uncertainty on dP/dt
97-102 F6.2 pc/cm3 DM Dispersion measure
104-106 F3.2 pc/cm3 e_DM rms uncertainty on DM
108-112 I5 d MJD1 MJD range
113 A1 --- --- [-]
114-118 I5 d MJD2 MJD range
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Note (1): The arrival times from which these ephemerides are derived
are freely available on-line as part of the EPN data base
http://www.jb.man.ac.uk/~pulsar/Resources/epn
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- PSR PSR designation
12- 16 F5.1 deg GLON Galactic longitude
18- 22 F5.1 deg GLAT Galactic latitude
24- 27 F4.1 mJy S430MHz Flux density at 430MHz
29- 32 F4.1 ms W50 Pulse width at 50% of the peak intensity
34- 37 F4.1 ms W20 Pulse width at 20% of the peak intensity
39- 42 F4.1 ms Weq Equivalent width of a top-hat pulse having
the same area and peak intensity of
the profile
44- 46 F3.1 kpc Dist Distance derived from the DM (1)
48- 51 F4.2 [mJy.kpc2] logL430MHz 430MHz luminosity
53- 56 F4.2 [yr] logAge Characteristic age
58- 62 F5.2 [10-4T] logB Surface dipole magnetic field
64- 67 F4.1 [10-7W] log(dE/dt) Rate of loss of spin-down energy
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Note (1): Assuming the Cordes & Lazio (2002, 0207156) electron
density model.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 28-Feb-2006