IS GEMINGA A GLITCHING PULSAR

被引:0
|
作者
ALPAR, MA
OGELMAN, H
SHAHAM, J
机构
[1] UNIV WISCONSIN, DEPT PHYS, 1150 UNIV AVE, MADISON, WI 53706 USA
[2] MIDDLE E TECH UNIV, DEPT PHYS, ANKARA 06531, TURKEY
[3] MAX PLANCK INST EXTRATERR PHYS, W-8046 GARCHING, GERMANY
[4] COLUMBIA UNIV, DEPT PHYS, NEW YORK, NY 10027 USA
[5] COLUMBIA UNIV, COLUMBIA ASTROPHYS LAB, NEW YORK, NY 10027 USA
关键词
PULSAR GLITCHES; GEMINGA;
D O I
暂无
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The recent discovery that Geminga is a pulsar has been followed by indications of an anomalous second derivative nu double overdot = 2.8(1.6) x 10(-25) Hz s-1 in the COS-B data, yielding a braking index n congruent-to 31 +/- 18. We propose that Geminga is a glitching pulsar with dynamical parameters similar to those of the Vela pulsar, whose interglitch behaviour is characterized by a large second derivative. With the vortex unpinning model for glitches, if we adopt the hypothesis that the number of vortices unpinned in each glitch and the moment of inertia of the crust superfluid involved in the interglitch response are the same in Geminga as in Vela, we find that the expected interglitch second derivative in Geminga agrees with that of the COS-B ephemeris.
引用
收藏
页码:L35 / L37
页数:3
相关论文
共 50 条
  • [11] The unusual profile of the radio pulsar Geminga
    V. M. Malofeev
    O. I. Malov
    Astronomy Reports, 2000, 44 : 45 - 55
  • [12] On the optical pulsations from the Geminga pulsar
    Gil, JA
    Khechinashvili, DG
    Melikidze, GI
    ASTROPHYSICAL JOURNAL, 2001, 551 (02): : 867 - 873
  • [13] Timing the Geminga pulsar with EGRET data
    Mattox, JR
    Halpern, JP
    Caraveo, PA
    ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1996, 120 (04): : C77 - C80
  • [14] Detection of the Geminga pulsar with the MAGIC telescopes
    Lopez, Marcos
    Ceribella, Giovanni
    Schweizer, Thomas
    Garcia, Jezabel R.
    Dazzi, Francesco
    36TH INTERNATIONAL COSMIC RAY CONFERENCE, ICRC2019, 2021,
  • [15] Studies of the gamma ray pulsar Geminga
    Zhang, S
    Li, TP
    Wu, M
    Yu, W
    Sun, XJ
    Song, LM
    Lu, FJ
    PROCEEDINGS OF THE FOURTH COMPTON SYMPOSIUM, PTS 1 AND 2: PT 1: THE COMPTON OBSERVATORY IN REVIEW; PT 2: PAPERS AND PRESENTATIONS, 1997, (410): : 578 - 582
  • [16] The unusual profile of the radio pulsar Geminga
    Malofeev, VM
    Malov, OI
    ASTRONOMY REPORTS, 2000, 44 (01) : 45 - 55
  • [17] FERMI-LAT OBSERVATIONS OF THE GEMINGA PULSAR
    Abdo, A. A.
    Ackermann, M.
    Ajello, M.
    Baldini, L.
    Ballet, J.
    Barbiellini, G.
    Bastier, D.
    Baughman, B. M.
    Bechtol, K.
    Bellazzini, R.
    Berenji, B.
    Bignami, G. F.
    Blandford, R. D.
    Bloom, E. D.
    Bonamente, E.
    Borgland, A. W.
    Bregeon, J.
    Brez, A.
    Brigida, M.
    Brueli, P.
    Burnett, T. H.
    Caliandro, G. A.
    Cameron, R. A.
    Caraveo, P. A.
    Casandjian, J. M.
    Cecchi, C.
    Celik, Oe.
    Charles, E.
    Chekhtman, A.
    Cheung, C. C.
    Chiang, J.
    Ciprini, S.
    Claus, R.
    Cohen-Tanugi, J.
    Conrad, J.
    Dermer, C. D.
    de Palma, F.
    Dormody, M.
    do Couto e Silva, E.
    Drell, P. S.
    Dubois, R.
    Dumora, D.
    Edmonds, Y.
    Farnier, C.
    Favuzzi, C.
    Fegan, S. J.
    Focke, W. B.
    Fortin, P.
    Frailis, M.
    Furazawa, Y.
    ASTROPHYSICAL JOURNAL, 2010, 720 (01): : 272 - 283
  • [18] A high-energy study of the Geminga pulsar
    Jackson, MS
    Halpern, JP
    Gotthelf, EV
    Mattox, JR
    ASTROPHYSICAL JOURNAL, 2002, 578 (02): : 935 - 942
  • [19] GEMINGA'S PUZZLING PULSAR WIND NEBULA
    Posselt, B.
    Pavlov, G. G.
    Slane, P. O.
    Romani, R.
    Bucciantini, N.
    Bykov, A. M.
    Kargaltsev, O.
    Weisskopf, M. C.
    Ng, C-Y
    ASTROPHYSICAL JOURNAL, 2017, 835 (01):
  • [20] Positron flux and γ-ray emission from Geminga pulsar and pulsar wind nebula
    Tang, Xiaping
    Piran, Tsvi
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2019, 484 (03) : 3491 - 3501