Electron-Positron Pairs Related to Alfven Waves on the Magnetar Surface

Abdul Kader; Kalpana Duorah

doi:doi:10.11648/j.ijass.20150303.11

| Peer-Reviewed

Electron-Positron Pairs Related to Alfven Waves on the Magnetar Surface

Abdul Kader, Kalpana Duorah

Published in International Journal of Astrophysics and Space Science (Volume 3, Issue 3)

Received: 8 April 2015 Accepted: 23 April 2015 Published: 6 May 2015

Views: Downloads:

Download PDF

Share This Article

Twitter
Linked In
Facebook

Abstract

The phenomena of electron-positron pairs production through the polar cap region of a magnetar is studied. Assuming the distances of electron-positron pair regions from the magnetar centre to be the height scales of magnetic deformed regions and hence determine by adopting the Alfven waves propagation. The maximum potential drop on the magnetar surface and the potential differences in the confined regions are obtained by using Lorentz factor. The attempt is made to find out the curvature photon energy through the polar cap region of magnetar that is greater than critical energy and verify the conversion into electron-positron pairs via synchrotron radiation with their characteristic photon energy. Further, an estimate is made to flow the charged particles per second through the polar cap region.

Published in	International Journal of Astrophysics and Space Science (Volume 3, Issue 3)
DOI	10.11648/j.ijass.20150303.11
Page(s)	25-29
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Electron-Positron Pairs, Polar Cap Region, Magnetar, Alfven Waves, Critical Energy, Lorentz Factor

References

[1]	Thompson, C. Lyutikov, M. and Kulkarni, S. R.: Astrophys. J., 574, 322 (2002)
[2]	Thompson, C. and Duncan, R. C.: MNRAS, 275, 255 (1995)
[3]	Blaes, O., Blandford, R.,Goldreich, P. &Madau, P.:ApJ, 343, 839-848 (1989)
[4]	Cumming, A., Arras, P., &Zweibel, E.: ApJ. 609, 999 (2004)
[5]	Ruderman, M.A., and Sutherland, P.G.: Astrophys.J.196, 51 (1975)
[6]	Cheng, K. S. & Zhang, L.: Astrophys. J. 562, 918 (2001)
[7]	Arons, J. &Scharlemann, E. T.: Astrophys. J., 231, 854 (1979)
[8]	Harding, A. K., &Muslimov, A. G.: Astrophys. J., 508, 328 (1998)
[9]	Cheng, K. S., Ho, C., &Ruderman, M. A.:ApJ, 300, 500 (1986)
[10]	Daugherty, J. K., & Harding, A. K.:Astrophys. J. 458, 278 (1996)
[11]	Zhang, B. & Harding, A. K.:Astrophys. J. 535, L51-L54 (2000)
[12]	Sturrock, P. A.:ApJ, 164, 529 (1971)
[13]	Chi, X., Cheng, K. S. & Young, E. C. M.:ApJ, 459, L83-L86 (1996)
[14]	Zhang, L., & Chang, K. S.:ApJ, 487, 370 (1997)
[15]	Cheng, K. S., & Zhang, L.:ApJ, 463, 271(1996)
[16]	Reisenegger, A.: The International Workshop on Strong Magnetic Fields and Neutron Stars, La Habana, Cuba (arXiv: astro-ph/0307133v1)(2003)
[17]	Goldreich, P.,& Julian, W.H.:ApJ, 157, 869 (1969)
[18]	Zhang, B. & Harding, A. K.: Astrophys. J. 535, L51-L54 (2000)
[19]	Thompson, C. and Duncan, R. C.: Astrophys. J. 473, 322 (1996)
[20]	Muslimov, A. G., and Tsygan, A. I.: MNRAS, 255, 61(1992)
[21]	Rudak, B. Dyks, J. &Bulik, T.” High-energy radiation from pulsars: a challenge to polar-cap models, Prpc. of 270. WE-Heraeus Seminar, “Neutron Stars, Pulsars and Supernova Remnants”: astro-ph/0206101(2002)
[22]	Arons: ApJ. 302, 301 ph/0206101 (1983)
[23]	Halpern, J.P. and Ruderman, M.:ApJ, 415, 286 (1993)
[24]	Erber, T.: Rev. Mod. Phys., 38, 626 (1966)
[25]	Harding, A. K., Contopoulos, I., and Kazanas, D.:Astrophys.J. Vol. 525, No. 2, L125 (1999)
[26]	Istomin, Ya, N. and Sobyanin, D. N.: Astronomy Letter, Vol. 33, No. 10, pp 660-672 (2007)
[27]	Zhu, T. and Ruderman, M.: ApJ. 478, 701-712 (1997)

Cite This Article

Plain Text BibTeX RIS

APA Style

Abdul Kader, Kalpana Duorah. (2015). Electron-Positron Pairs Related to Alfven Waves on the Magnetar Surface. International Journal of Astrophysics and Space Science, 3(3), 25-29. https://doi.org/10.11648/j.ijass.20150303.11

Copy | Download

ACS Style

Abdul Kader; Kalpana Duorah. Electron-Positron Pairs Related to Alfven Waves on the Magnetar Surface. Int. J. Astrophys. Space Sci. 2015, 3(3), 25-29. doi: 10.11648/j.ijass.20150303.11

Copy | Download

AMA Style

Abdul Kader, Kalpana Duorah. Electron-Positron Pairs Related to Alfven Waves on the Magnetar Surface. Int J Astrophys Space Sci. 2015;3(3):25-29. doi: 10.11648/j.ijass.20150303.11

Copy | Download

@article{10.11648/j.ijass.20150303.11,
  author = {Abdul Kader and Kalpana Duorah},
  title = {Electron-Positron Pairs Related to Alfven Waves on the Magnetar Surface},
  journal = {International Journal of Astrophysics and Space Science},
  volume = {3},
  number = {3},
  pages = {25-29},
  doi = {10.11648/j.ijass.20150303.11},
  url = {https://doi.org/10.11648/j.ijass.20150303.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijass.20150303.11},
  abstract = {The phenomena of electron-positron pairs production through the polar cap region of a magnetar is studied. Assuming the distances of electron-positron pair regions from the magnetar centre to be the height scales of magnetic deformed regions and hence determine by adopting the Alfven waves propagation. The maximum potential drop on the magnetar surface and the potential differences in the confined regions are obtained by using Lorentz factor. The attempt is made to find out the curvature photon energy through the polar cap region of magnetar that is greater than critical energy and verify the conversion into electron-positron pairs via synchrotron radiation with their characteristic photon energy. Further, an estimate is made to flow the charged particles per second through the polar cap region.},
 year = {2015}
}

Copy | Download

TY  - JOUR
T1  - Electron-Positron Pairs Related to Alfven Waves on the Magnetar Surface
AU  - Abdul Kader
AU  - Kalpana Duorah
Y1  - 2015/05/06
PY  - 2015
N1  - https://doi.org/10.11648/j.ijass.20150303.11
DO  - 10.11648/j.ijass.20150303.11
T2  - International Journal of Astrophysics and Space Science
JF  - International Journal of Astrophysics and Space Science
JO  - International Journal of Astrophysics and Space Science
SP  - 25
EP  - 29
PB  - Science Publishing Group
SN  - 2376-7022
UR  - https://doi.org/10.11648/j.ijass.20150303.11
AB  - The phenomena of electron-positron pairs production through the polar cap region of a magnetar is studied. Assuming the distances of electron-positron pair regions from the magnetar centre to be the height scales of magnetic deformed regions and hence determine by adopting the Alfven waves propagation. The maximum potential drop on the magnetar surface and the potential differences in the confined regions are obtained by using Lorentz factor. The attempt is made to find out the curvature photon energy through the polar cap region of magnetar that is greater than critical energy and verify the conversion into electron-positron pairs via synchrotron radiation with their characteristic photon energy. Further, an estimate is made to flow the charged particles per second through the polar cap region.
VL  - 3
IS  - 3
ER  -

Copy | Download

Author Information

Abdul Kader

Department of Physics, Gauhati University, Guwahati, Assam, India
Kalpana Duorah

Department of Physics, Gauhati University, Guwahati, Assam, India

Download PDF

Sections

Plain Text BibTeX RIS

APA Style

Abdul Kader, Kalpana Duorah. (2015). Electron-Positron Pairs Related to Alfven Waves on the Magnetar Surface. International Journal of Astrophysics and Space Science, 3(3), 25-29. https://doi.org/10.11648/j.ijass.20150303.11

Copy | Download

ACS Style

Abdul Kader; Kalpana Duorah. Electron-Positron Pairs Related to Alfven Waves on the Magnetar Surface. Int. J. Astrophys. Space Sci. 2015, 3(3), 25-29. doi: 10.11648/j.ijass.20150303.11

Copy | Download

AMA Style

Abdul Kader, Kalpana Duorah. Electron-Positron Pairs Related to Alfven Waves on the Magnetar Surface. Int J Astrophys Space Sci. 2015;3(3):25-29. doi: 10.11648/j.ijass.20150303.11

Copy | Download

@article{10.11648/j.ijass.20150303.11,
  author = {Abdul Kader and Kalpana Duorah},
  title = {Electron-Positron Pairs Related to Alfven Waves on the Magnetar Surface},
  journal = {International Journal of Astrophysics and Space Science},
  volume = {3},
  number = {3},
  pages = {25-29},
  doi = {10.11648/j.ijass.20150303.11},
  url = {https://doi.org/10.11648/j.ijass.20150303.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijass.20150303.11},
  abstract = {The phenomena of electron-positron pairs production through the polar cap region of a magnetar is studied. Assuming the distances of electron-positron pair regions from the magnetar centre to be the height scales of magnetic deformed regions and hence determine by adopting the Alfven waves propagation. The maximum potential drop on the magnetar surface and the potential differences in the confined regions are obtained by using Lorentz factor. The attempt is made to find out the curvature photon energy through the polar cap region of magnetar that is greater than critical energy and verify the conversion into electron-positron pairs via synchrotron radiation with their characteristic photon energy. Further, an estimate is made to flow the charged particles per second through the polar cap region.},
 year = {2015}
}

Copy | Download

TY  - JOUR
T1  - Electron-Positron Pairs Related to Alfven Waves on the Magnetar Surface
AU  - Abdul Kader
AU  - Kalpana Duorah
Y1  - 2015/05/06
PY  - 2015
N1  - https://doi.org/10.11648/j.ijass.20150303.11
DO  - 10.11648/j.ijass.20150303.11
T2  - International Journal of Astrophysics and Space Science
JF  - International Journal of Astrophysics and Space Science
JO  - International Journal of Astrophysics and Space Science
SP  - 25
EP  - 29
PB  - Science Publishing Group
SN  - 2376-7022
UR  - https://doi.org/10.11648/j.ijass.20150303.11
AB  - The phenomena of electron-positron pairs production through the polar cap region of a magnetar is studied. Assuming the distances of electron-positron pair regions from the magnetar centre to be the height scales of magnetic deformed regions and hence determine by adopting the Alfven waves propagation. The maximum potential drop on the magnetar surface and the potential differences in the confined regions are obtained by using Lorentz factor. The attempt is made to find out the curvature photon energy through the polar cap region of magnetar that is greater than critical energy and verify the conversion into electron-positron pairs via synchrotron radiation with their characteristic photon energy. Further, an estimate is made to flow the charged particles per second through the polar cap region.
VL  - 3
IS  - 3
ER  -

Copy | Download