Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-25T16:36:27.307Z Has data issue: false hasContentIssue false
  • English
  • Français

The magnetic field structure of the Small Magellanic Cloud

Published online by Cambridge University Press:  01 July 2008

Antonio Mário Magalhães ,
Aiara Lobo Gomes ,
Aline de Almeida Vidotto ,
Cláudia Vilega Rodrigues ,
Antonio Pereyra ,
John Wisniewski ,
Karen Bjorkman ,
Jon Bjorkman ,
Marilyn Meade  and
Brian L. Babler
Antonio Mário Magalhães
Affiliation:
Depto. de Astronomia, IAG, Universidade de São Paulo, Rua do Matão 1226, São Paulo, SP 05508-900, Brazil email: [email protected]
Aiara Lobo Gomes
Affiliation:
Depto. de Astronomia, IAG, Universidade de São Paulo, Rua do Matão 1226, São Paulo, SP 05508-900, Brazil email: [email protected]
Aline de Almeida Vidotto
Affiliation:
Depto. de Astronomia, IAG, Universidade de São Paulo, Rua do Matão 1226, São Paulo, SP 05508-900, Brazil email: [email protected]
Cláudia Vilega Rodrigues
Affiliation:
INPE/DAS, S.J. dos Campos, SP, Brazil
Antonio Pereyra
Affiliation:
ON/CNPq, Brazil
John Wisniewski
Affiliation:
University of Washington, USA
Karen Bjorkman
Affiliation:
University of Toledo, USA
Jon Bjorkman
Affiliation:
University of Toledo, USA
Marilyn Meade
Affiliation:
University of Wisconsin-Madison, USA
Brian L. Babler
Affiliation:
University of Wisconsin-Madison, USA
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We describe two studies of the interstellar magnetic field in regions of the Small Magellanic Cloud (SMC), including those affected by the interaction with the Large Magellanic Cloud (LMC). We use optical polarization data from aligned grains in the interstellar medium of the SMC in order to map the sky-projected direction of the magnetic field and determine characteristics of the SMC and Pan-Magellanic field structures. The earlier, photoelectric data are reanalyzed and they provide values for the average projected magnetic field intensity (1.7 × 10−6 G) and the random field component intensity (3.5 × 10−6 G). Another on-going program uses imaging data and, when concluded, will allow more local estimates of the field intensity in the SMC NE/Wing regions. Additional goals include cross-correlating our field mapping results with those of point sources and structures found by the Spitzer Space Telescope in the SMC between 3.6 and 8 μm.

Keywords

polarizationtechniques: polarimetricgalaxies: individual (SMC)Magellanic Cloudsgalaxies: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S256: The Magellanic System: Stars, Gas, and Galaxies , July 2008 , pp. 178 - 183
Copyright
Copyright © International Astronomical Union 2009

References

Beck, R. 2008, in Aharonian, F. A., Hofmann, W., & Rieger, F. M. (eds.), High Energy Gamma-Ray Astronomy, AIP Conf. Proc., 1085, p. 83Google Scholar
Bolatto, A. D., Simon, J. D., Stanimirović, S., et al. 2007, ApJ, 655, 212CrossRefGoogle Scholar
Davis, L. J. & Greenstein, J. L. 1951, ApJ, 114, 206CrossRefGoogle Scholar
Falceta-Gonçalves, D., Lazarian, A., & Kowal, G. 2008, ApJ, 679, 537CrossRefGoogle Scholar
Fosalba, P., Lazarian, A., Prunet, S., & Tauber, J. A. 2002, ApJ, 564, 762Google Scholar
Heiles, C. 1996, ApJ, 462, 316CrossRefGoogle Scholar
Hoang, T. & Lazarian, A. 2008, MNRAS 388, 117CrossRefGoogle Scholar
Magalhães, A. M., Loiseau, N., Rodrigues, C. V., & Piirola, V. 1990 in Galactic and intergalactic magnetic fields, IAU Symposium 140 (Dordrecht, The Netherlands: Kluwer Academic Publishers), p. 255CrossRefGoogle Scholar
Magalhães, A. M., Pereyra, A., Melgarejo, R., et al. 2005, in Adamson, A., Aspin, C., Davis, C. J., & Fujiyoshi, T. (eds), Astronomical Polarimetry: Current Status and Future Directions, ASP Conference Series 343, p. 305Google Scholar
Mao, S. A., Gaensler, B. M., Stanimirović, S., Haverkorn, M., McClure-Griffiths, N. M., Staveley-Smith, L., & Dickey, J. M. 2008, ApJ, in press, ApJ, 688, 1029CrossRefGoogle Scholar
Mathewson, D. S. & Ford, V. L. 1970, ApJ, 160, L43CrossRefGoogle Scholar
McGee, R. X. & Newton, L. M. 1981, Proceedings of the Astronomical Society of Australia, 4, 189CrossRefGoogle Scholar
McGee, R. X. & Newton, L. M. 1986, Proceedings of the Astronomical Society of Australia, 6, 471Google Scholar
Pereyra, A. & Magalhães, A. M. 2004, ApJ, 603, 584CrossRefGoogle Scholar
Pereyra, A. & Magalhães, A. M. 2007, ApJ, 662, 1014CrossRefGoogle Scholar
Rodrigues, C. V., Magalhães, A. M., Coyne, G. V., & Piirola, V. 1997, ApJ, 485, 618CrossRefGoogle Scholar
Schmidt, T. 1976, A&AS, 24, 357Google Scholar
Sofue, Y. 1994, PASJ, 46, 431Google Scholar
Stanimirović, S., Staveley-Smith, L., & Jones, P. A. 2004, ApJ, 604, 176CrossRefGoogle Scholar
Westerlund, B. E. 1993, in Bacheck, B. (ed.), New Aspects of Magellanic Cloud Research, 416, p. 7CrossRefGoogle Scholar
Wisniewski, J. P., Bjorkman, K. S., Magalhães, A. M., Bjorkman, J. E., Meade, M. R., & Pereyra, A. 2007a, ApJ, 671, 2040CrossRefGoogle Scholar
Wisniewski, J. P., Bjorkman, K. S., Magalhães, A. M., & Pereyra, A. 2007b, ApJ, 664, 296CrossRefGoogle Scholar
Zweibel, E. G. & Heiles, C. 1997, Nature, 385, 131CrossRefGoogle Scholar