J/MNRAS/469/2313 Radio pulsars post-glitchs (Gugercinoglu, 2017)
Post-glitch exponential relaxation of radio pulsars and magnetars in terms of
vortex creep across flux tubes.
Gugercinoglu E.
<Mon. Not. R. Astron. Soc., 469, 2313-2322 (2017)>
=2017MNRAS.469.2313G 2017MNRAS.469.2313G (SIMBAD/NED BibCode)
ADC_Keywords: Pulsars ; Magnetic fields
Keywords: dense matter - stars: magnetars - stars: magnetic fields -
stars: neutron - pulsars: general
Abstract:
Timing observations of rapidly rotating neutron stars revealed a great
number of glitches, observed from both canonical radio pulsars and
magnetars. Among them, 76 glitches have shown exponential
relaxation(s) with characteristic decay times ranging from several
days to a few months, followed by a more gradual recovery. Glitches
displaying exponential relaxation with single or multiple decay time
constants are analysed in terms of a model based on the interaction of
the vortex lines with the toroidal arrangement of flux tubes in the
outer core of the neutron star. Model results agree with the observed
time-scales in general. Thus, the glitch phenomenon can be used to
deduce valuable information about neutron star structure, in
particular on the interior magnetic field configuration which is
unaccessible from surface observations. One immediate conclusion is
that the magnetar glitch data are best explained with a much cooler
core and therefore require that direct Urca-type fast-cooling
mechanisms should be effective for magnetars.
Description:
In this work, the response of vortex creep against toroidal flux tubes
to a glitch is confronted with the existing glitch observations in the
literature.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
sources.dat 34 36 List of studied pulsars
table1.dat 158 89 *Radio pulsar glitches displaying post-glitch
exponential decay are confronted with the model
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Note on table1.dat: Glitch data are taken from Manchester et al.
(2005AJ....129.1993M 2005AJ....129.1993M, Cat. B/psr) and ATNF Glitch Table
(http:www.atnf.csiro.au/people/pulsar/psrcat/glitchTbl.html).
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See also:
http:www.atnf.csiro.au/people/pulsar/psrcat : ATNF pulsar catalog home page
Byte-by-byte Description of file: sources.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Pulsar Pulsar name
12- 13 I2 h RAh Simbad Right ascension (J2000)
15- 16 I2 min RAm Simbad Right ascension (J2000)
18- 22 F5.2 s RAs Simbad Right ascension (J2000)
24 A1 --- DE- Simbad Declination sign (J2000)
25- 26 I2 deg DEd Simbad Declination (J2000)
28- 29 I2 arcmin DEm Simbad Declination (J2000)
31- 34 F4.1 arcsec DEs Simbad Declination (J2000)
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Pulsar Pulsar name
12- 17 F6.2 10+4yr Age Characteristic age
19- 23 F5.2 10+12gauss Bd Surface dipole (at equator)
25- 28 F4.2 10+14gauss Bphi Interior toroidal field strength
30- 40 F11.5 d Date Glitch observation date (MJD)
43- 51 F9.5 d e_Date ? rms uncertainty on Date
or lower error value
53- 56 F4.2 d E_Date ? Upper error value on Date
59- 66 F8.2 10-9 Dnug/nu ? Glitch magnitude, {DELTA}νg/ν
69- 75 F7.2 10-9 e_Dnug/nu ? rms uncertainty on Dnug/nu
78- 84 F7.3 10-3 Jump ? Glitch jump in the spin-down rate,
{DELTA}dνg/dt/(dν/dt)
87- 92 F6.3 10-3 e_Jump ? rms uncertainty on Jump
95-102 F8.6 --- Q ? Glitch healing parameter
105-112 F8.6 --- e_Q ? rms uncertainty on Q
or lower error value
114-116 F3.1 --- E_Q ? Upper error value on Q
118-124 F7.2 d taud ? Observed exponential decay time-scale
126-131 F6.2 d e_taud ? rms uncertainty on taud
or lower error value
133-135 F3.1 d E_taud ? Upper error value on taud
137-142 I6 d tautor1 Toroidal relaxation time-scale For Model 1
144-150 F7.1 d tautor2 Toroidal relaxation time-scale For Model 2
152-158 F7.1 d tautor3 Toroidal relaxation time-scale For Model 3
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 08-Apr-2020