Implementation of an offset-dipole magnetic field in a pulsar modelling code

被引：0

作者：

Breed, M. ^{[1
]}

Venter, C. ^{[1
]}

Harding, A. K. ^{[2
]}

Johnson, T. J. ^{[3
,4
]}

机构：

[1] North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa

[2] NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA

[3] Natl Acad Sci, Natl Res Council Res Associate, Washington, DC 20001 USA

[4] Naval Res Lab, Washington, DC 20375 USA

来源：

PROCEEDINGS OF SAIP2013: THE 58TH ANNUAL CONFERENCE OF THE SOUTH AFRICAN INSTITUTE OF PHYSICS | 2013年

关键词：

LARGE-AREA TELESCOPE; GAMMA-RAY PULSARS; OUTER MAGNETOSPHERE; SLOT GAPS; RADIATION; ACCELERATION; CASCADES; EMISSION; CATALOG;

D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The light curves of gamma-ray pulsars detected by the Fermi Large Area Telescope show great variety in profile shape and position relative to their radio profiles. Such diversity hints at distinct underlying magnetospheric and/or emission geometries for the individual pulsars. We implemented an offset-dipole magnetic field in an existing geometric pulsar modelling code which already includes static and retarded vacuum dipole fields. In our model, this offset is characterised by a parameter epsilon (with epsilon = 0 corresponding to the static dipole case). We constructed sky maps and light curves for several pulsar parameters and magnetic fields, studying the effect of an offset dipole on the resulting light curves. A standard two-pole caustic emission geometry was used. As an application, we compared our model light curves with Fermi data for the bright Vela pulsar.

引用

页码：350 / 355

页数：6

共 20 条

[1] THE SECOND FERMI LARGE AREA TELESCOPE CATALOG OF GAMMA-RAY PULSARS
Abdo, A. A.
Ajello, M.
Allafort, A.
Baldini, L.
Ballet, J.
Barbiellini, G.
Baring, M. G.
Bastieri, D.
Belfiore, A.
Bellazzini, R.
Bhattacharyya, B.
Bissaldi, E.
Bloom, E. D.
Bonamente, E.
Bottacini, E.
Brandt, T. J.
Bregeon, J.
Brigida, M.
Bruel, P.
Buehler, R.
Burgay, M.
Burnett, T. H.
Busetto, G.
Buson, S.
Caliandro, G. A.
Cameron, R. A.
Camilo, F.
Caraveo, P. A.
Casandjian, J. M.
Cecchi, C.
Celik, Oe .
Charles, E.
Chaty, S.
Chaves, R. C. G.
Chekhtman, A.
Chen, A. W.
Chiang, J.
Chiaro, G.
Ciprini, S.
Claus, R.
Cognard, I.
Cohen-Tanugi, J.
Cominsky, L. R.
Conrad, J.
Cutini, S.
D'Ammando, F.
De Angelis, A.
DeCesar, M. E.
De Luca, A.
Den Hartog, P. R.
[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2013, 208 (02)
[2] THE FIRST FERMI LARGE AREA TELESCOPE CATALOG OF GAMMA-RAY PULSARS
Abdo, A. A.
Ackermann, M.
Ajello, M.
Atwood, W. B.
Axelsson, M.
Baldini, L.
Ballet, J.
Barbiellini, G.
Baring, M. G.
Bastieri, D.
Baughman, B. M.
Bechtol, K.
Bellazzini, R.
Berenji, B.
Blandford, R. D.
Bloom, E. D.
Bonamente, E.
Borgland, A. W.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Burnett, T. H.
Buson, S.
Caliandro, G. A.
Cameron, R. A.
Camilo, F.
Caraveo, P. A.
Casandjian, J. M.
Cecchi, C.
Celik, Oe
Charles, E.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cognard, I.
Cohen-Tanugi, J.
Cominsky, L. R.
Conrad, J.
Corbet, R.
Cutini, S.
den Hartog, P. R.
Dermer, C. D.
de Angelis, A.
de Luca, A.
de Palma, F.
Digel, S. W.
Dormody, M.
[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2010, 187 (02) : 460 - 494
[3] FERMI LARGE AREA TELESCOPE OBSERVATIONS OF THE VELA PULSAR
Abdo, A. A.
Ackermann, M.
Atwood, W. B.
Bagagli, R.
Baldini, L.
Ballet, J.
Band, D. L.
Barbiellini, G.
Baring, M. G.
Bartelt, J.
Bastieri, D.
Baughman, B. M.
Bechtol, K.
Bellardi, F.
Bellazzini, R.
Berenji, B.
Bisello, D.
Blandford, R. D.
Bloom, E. D.
Bogart, J. R.
Bonamente, E.
Borgland, A. W.
Bouvier, A.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Burnett, T. H.
Caliandro, G. A.
Cameron, R. A.
Camilo, F.
Caraveo, P. A.
Casandjian, J. M.
Ceccanti, M.
Cecchi, C.
Charles, E.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cognard, I.
Cohen-Tanugi, J.
Cominsky, L. R.
Conrad, J.
Corbet, R.
Corucci, L.
Cutini, S.
Davis, D. S.
DeKlotz, M.
[J]. ASTROPHYSICAL JOURNAL, 2009, 696 (02) : 1084 - 1093
[4] THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION
Atwood, W. B.
Abdo, A. A.
Ackermann, M.
Althouse, W.
Anderson, B.
Axelsson, M.
Baldini, L.
Ballet, J.
Band, D. L.
Barbiellini, G.
Bartelt, J.
Bastieri, D.
Baughman, B. M.
Bechtol, K.
Bederede, D.
Bellardi, F.
Bellazzini, R.
Berenji, B.
Bignami, G. F.
Bisello, D.
Bissaldi, E.
Blandford, R. D.
Bloom, E. D.
Bogart, J. R.
Bonamente, E.
Bonnell, J.
Borgland, A. W.
Bouvier, A.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Burnett, T. H.
Busetto, G.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Carius, S.
Carlson, P.
Casandjian, J. M.
Cavazzuti, E.
Ceccanti, M.
Cecchi, C.
Charles, E.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Chipaux, R.
Cillis, A. N.
Ciprini, S.
[J]. ASTROPHYSICAL JOURNAL, 2009, 697 (02) : 1071 - 1102
[5] Becker W, 2007, HIGHLIGHTS ASTRONOMY, V14, P109
[6] ENERGETIC RADIATION FROM RAPIDLY SPINNING PULSARS .1. OUTER MAGNETOSPHERE GAPS
CHENG, KS
HO, C
RUDERMAN, M
[J]. ASTROPHYSICAL JOURNAL, 1986, 300 (02) : 500 - 521
[7] The axisymmetric pulsar magnetosphere
Contopoulos, I
Kazanas, D
Fendt, C
[J]. ASTROPHYSICAL JOURNAL, 1999, 511 (01) : 351 - 358
[8] Gamma-ray pulsars: Emission from extended polar cap cascades
Daugherty, JK
Harding, AK
[J]. ASTROPHYSICAL JOURNAL, 1996, 458 (01) : 278 - 292
[9] Deutsch A. J., 1955, Ann. Astrophys, V18, P1
[10] Relativistic effects and polarization in three high-energy pulsar models
Dyks, J
Harding, AK
Rudak, B
[J]. ASTROPHYSICAL JOURNAL, 2004, 606 (02) : 1125 - 1142

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