Using Velocity Anisotropy to Analyze Magnetohydrodynamic Turbulence in Giant Molecular Clouds

Autor/innen

  • Alecio Madrid

DOI:

https://doi.org/10.17307/wsc.v1i1.217

Schlagworte:

Structure Function, Giant Molecular Clouds, Turbulence

Abstract

Theoretical studies have shown structure function (SF) analysis to be a strong tool for gaging interstellar magnetohydrodynamic (MHD) turbulence. MHD turbulence plays a critical role in the structure and evolution of giant molecular clouds (GMCs) as well as in the formation of sub-structures known to spawn stellar progenitors. This study takes an in-depth approach to studying the limitations of SF analysis for gauging MHD turbulence in GMCs. Limitations of radio observation has led to large variations in the methods used to extract GMCs from survey data. Thus, a strong indicator of the robustness of SF analysis is whether it remains accurate even when implementing different methods of extraction. Even though a plethora of studies have indicated the strong potential of SF for analyzing MHD turbulence, this study finds significant cause for concern regarding the feasibility of SF analysis as a robust tool in GMC spectroscopy.

Literaturhinweise

Burkhart, B., Falceta-Gonçalves, D., Kowal, G., & Lazarian, A. 2009, ApJ, 693, 250

Burkhart, B., Lazarian, A., Leão, I. C., de Medeiros, J. R., & Esquivel, A. 2014, ApJ, 790, 130

Cho, J., & Lazarian, A. 2003, MNRAS, 345, 325

Cho, J., Lazarian, A., & Vishniaz, E.T. 2002, ApJ, 345, 325

Cho J., Vishniac E. 2000a, ApJ, 538, 217

Cho J., Vishniac E. 2000b, ApJ, 539, 273

Esquivel, A., & Lazarian, A. 2005, ApJ, 631, 320

Esquivel, A., & Lazarian, A. 2011, ApJ, 740, 117

Esquivel, A., Lazarian, A., & Pogosyan, D. 2015, ApJ, 814, 77

García, P., Bronfman, Nyman, L., Dame, T.M., & Luna, A. 2014, ApJS, 212,2

Goldreich P., Sridhar S. 1995, APJ, 438, 763

Hennebelle, P., & Falgarone, E. 2012, A&ARv, 20, 55

Heyer, M., Gong, H., Ostriker, E., & Brunt, C. 2008, ApJ, 680, 420

Jackson, J. M., Rathborne, J. M., Shah, R. Y., et al. 2006 ApJ 163, 145

Kowal, G., Lazarian, A., & Beresnyak, A. 2007 ApJ, 658, 423

Hernandez, A. K. & Tan J. C. 2015, ApJ, 809, 154

Lee, E. J., Miville-Deschênes, M-A., Murray, N. W. 2016 ApJ, 833, 229

Lada, C. J., & Lada, E. A. 2003, ARA&A, 41, 57

Maron J., Goldreich P. 2001, ApJ, 554, 1175

McKee, C. F., & Ostriker, E. C. 2007 ARA&A, 45, 565

Nestingen-Palm, D., Stanimoirović, S., González-Casanova, F. D., Babler, .B,

Jameson, K., Bolatto, A. 2017, ApJ, 845, 1

Murray, N. 2011, ApJ, 729, 133

Otto, F., Ji, W., & Li, H. 2017 ApJ 836, 95

VanForeest, N. 2012, fitEllipse.py

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Veröffentlicht

2018-01-22

Zitationsvorschlag

Madrid, A. (2018). Using Velocity Anisotropy to Analyze Magnetohydrodynamic Turbulence in Giant Molecular Clouds. Proceedings of the Wisconsin Space Conference, 1(1). https://doi.org/10.17307/wsc.v1i1.217

Ausgabe

Rubrik

Astronomy and Cosmology