J/A+AS/124/123 Atlas of the Crab pulsar pulse profiles (Massaro+ 1997)
An atlas of X- and γ-ray pulse profiles of the Crab pulsar (PSR 0531+21):
an analysis of energy and time variations.
Massaro E., Feroci M., Matt G.
<Astron. Astrophys. Suppl. Ser. 124, 123 (1997)>
=1997A&AS..124..123M 1997A&AS..124..123M (SIMBAD/NED BibCode)
ADC_Keywords: Pulsars ; Atlases
Keywords: pulsars: PSR 0531+21 = Crab pulsar - atlas - X-rays: stars -
gamma rays: observations
Abstract:
We present an atlas of X and γ-ray pulse profiles of PSR 0531+21
(Crab pulsar) measured since 1967. This atlas, containing 250
profiles, is useful to study in detail the behaviour with time and
energy of this important source and to test models of the emission
geometrical pattern. The atlas database is also accessible from
Mosaic. An analysis of the energy dependence and time changes of the
Crab pulsar light curve (and in particular of the P2/P1 ratio), based
on the atlas database, is presented.
Objects:
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RA (2000) DE Designation(s)
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05 34 31.9 +22 00 52 PSR 0531+21 = Crab pulsar
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2 78 250 List of all pulse profiles included in the Atlas
fig/* . 250 Spectra
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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1- 8 A8 --- Profile Profile
10- 17 A8 "DD/MM/YY" Epoch1 Epoch of observation or
begin of the epoch if interval
18 A1 --- --- [-] dash
19- 26 A8 "DD/MM/YY" Epoch2 End of the epoch of observation
28- 35 A8 "DD/MM/YY" Epocch3 Second epoch of observation
38- 40 I3 --- BinN ? Number of phase bin
43 A1 --- l_Band [≳] Limit flag on Band
44- 51 F8.3 --- Band ? Lower level of the energy band or
upper limit
52 A1 --- --- [-] dash
53- 60 F8.2 --- Bandu ? Upper level of the energy band
61 A1 --- n_Band [A] A: average value
63- 65 A3 --- x_Band Units of the energy band
67- 70 F4.1 --- Max ? Phase bin of the P1 centre (with the
approximation of half a bin)
72- 76 A5 --- Ref References (2)
78 I1 --- Note ? Note (1)
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Note (1): 1: In the original paper the size of P1 bins is 1/2 of the other bins.
Here the counts in P1 were binned two by two to have the same
binning trough all the profile.
2: In the original paper the pulse profile has 199 bins instead of
the 200 quoted in the text. No additional bin has been added in
the profile of the atlas.
3: In the original paper the pulse profile has 65 bins instead of
the 66 quoted in the text. An additional bin has been added in
the profile of the atlas with a count rate equal to that of the
off-pulse level.
4: This pulse profile is not included in the original paper but was
computed by adding the four profiles from HX 08_1 to HX 08_4.
5: The precise epoch of each pulse profile is not explicitly
specified in the paper
6: Sum of the pulse profiles HX 20_1, HX 27_1 and HX 28_1, reported
in the quoted reference.
7: This pulse profile is not included in the original paper but was
computed by adding the two profiles HG 19_1 and HG 19_2.
8: This pulse profile is not included in the original paper but was
computed by adding the four profiles from HG 19_4 to HG 19_7.
Note (2): References:
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Acknowledgements: Enrico Massaro
(End) Patricia Bauer [CDS] 25-Apr-1997