Low-Mach-number turbulence in interstellar gas revealed by radio polarization gradients

Nature

Volumn 478, Issue 7368, 2011, Pages 214-217

  Gaensler, B M ^a   Haverkorn, M ^b,c,d   Burkhart, B ^e   Newton Mcgee, K J ^a,f   Ekers, R D ^f   Lazarian, A ^e   McClure Griffiths, N M ^f   Robishaw, T ^a   Dickey, J M ^g   Green, A J ^a  

^a UNIVERSITY OF SYDNEY   (Australia)

^b ASTRON   (Netherlands)

^c LEIDEN UNIVERSITY   (Netherlands)

^d RADBOUD UNIVERSITY NIJMEGEN   (Netherlands)

^e UNIVERSITY OF WISCONSIN MADISON   (United States)

^f CSIRO   (Australia)

^g UNIVERSITY OF TASMANIA   (Australia)

Author keywords

[No Author keywords available]

Indexed keywords

MAGNETIC FIELD; POLARIZATION; REYNOLDS NUMBER; STOKES FORMULA; TURBULENCE;

ARTICLE; ASTRONOMY; DENSITY GRADIENT; GAS DIFFUSION; MAGNETIC FIELD; MATHEMATICAL COMPUTING; POLARIZATION; PRIORITY JOURNAL; RADIATION;

EID: 80054014379     PISSN: 00280836     EISSN: 14764687     Source Type: Journal    
DOI: 10.1038/nature10446     Document Type: Article

References (30)

1. Ferrière, K. M. The interstellar environment of our galaxy. Rev. Mod. Phys. 73, 1031-1066 (2001). (Pubitemid 33395906)
2. de Avillez, M. A. & Breitschwerdt, D. Global dynamical evolution of the ISM in star forming galaxies. I. High resolution 3D simulations: effect of the magnetic field. Astron. Astrophys. 436, 585-600 (2005). (Pubitemid 40844581)
3. Chepurnov, A.&Lazarian, A. Extending the big power lawin the sky with turbulence spectra from Wisconsin Ha Mapper data. Astrophys. J. 710, 853-858 (2010).
4. Armstrong, J. W., Rickett, B. J. & Spangler, S. R. Electron density power spectrumin the local interstellar medium. Astrophys. J. 443, 209-221 (1995).
5. Kritsuk, A. G., Norman, M. L., Padoan, P. & Wagner, R. The statistics of supersonic isothermal turbulence. Astrophys. J. 665, 416-431 (2007).
6. Kowal, G., Lazarian, A. & Beresnyak, A. Density fluctuations in MHD turbulence: Spectra, intermittency, and topology. Astrophys. J. 658, 423-445 (2007).
7. Kissmann, R., Kleimann, J., Fichtner, H. & Grauer, R. Local turbulence simulations for the multiphase ISM. Mon. Not. R. Astron. Soc. 391, 1577-1588 (2008).
8. Wieringa, M. H., de Bruyn, A. G., Jansen, D., Brouw, W. N. & Katgert, P. Small scale polarization structure in the diffuse galactic emission at 325 MHz. Astron. Astrophys. 268, 215-229 (1993).
9. Gray, A. D., Landecker, T. L., Dewdney, P. E. & Taylor, A. R. A large-scale, interstellar Faraday-rotation feature of unknown origin. Nature 393, 660-662 (1998). (Pubitemid 28289648)
10. Haverkorn, M., Katgert, P. & de Bruyn, A. G. Structure in the local Galactic ISM on scales down to 1 pc, from multi-band radio polarization observations. Astron. Astrophys. 356, L13-L16 (2000).
11. Gaensler, B. M. et al. Radio polarization from the inner galaxy at arcminute resolution. Astrophys. J. 549, 959-978 (2001).
12. Uyañker, B. & Landecker, T. L. A highly ordered Faraday rotation structure in the interstellar medium. Astrophys. J. 575, 225-233 (2002). (Pubitemid 37089219)
13. Shukurov, A. & Berkhuijsen, E. M. Faraday ghosts: depolarization canals in the galactic radio emission. Mon. Not. R. Astron. Soc. 342, 496-500 (2003). (Pubitemid 37268743)
14. Haverkorn, M. & Heitsch, F. Canals beyond Mars: beam depolarization in radio continuum maps of the warm ISM. Astron. Astrophys. 421, 1011-1019 (2004).
15. Fletcher, A. & Shukurov, A. Depolarization canals and interstellar turbulence. EAS Publ. Ser. 23, 109-128 (2007).
16. McClure-Griffiths, N. M. et al. The Southern Galactic Plane Survey: the test region. Astrophys. J. 551, 394-412 (2001).
17. Newton-McGee, K. J. Radio Polarimetry as a Probe of Interstellar Magnetism 83-87. Ph.D. thesis, Univ. Sydney (2009).
18. Ransom, R. R., Uyañker, B., Kothes, R. & Landecker, T. L. Probing the magnetized interstellar medium surrounding the planetary nebula Sh 2-216. Astrophys. J. 684, 1009-1017 (2008).
19. Gaustad, J. E., McCullough, P. R., Rosing, W. & Van Buren, D. A robotic wideangle Ha survey of the southern sky. Publ. Astron. Soc. Pacif. 113, 1326-1348 (2001).
20. Parker, Q. A. et al. The AAO/UKST SuperCOSMOS Ha survey. Mon. Not. R. Astron. Soc. 362, 689-710 (2005).
21. Beresnyak, A., Lazarian, A. & Cho, J. Density scaling and anisotropy in supersonic magnetohydrodynamic turbulence. Astrophys. J. 624, L93-L96 (2005). (Pubitemid 40763696)
22. Lemaster, M. N. & Stone, J. M. Dissipation and heating in supersonic hydrodynamic and MHD turbulence. Astrophys. J. 691, 1092-1108 (2009).
23. Eyink, G. L.Besov spaces andthemultifractal hypothesis. J. Stat. Phys. 78,353-375 (1995).
24. Burkhart, B., Falceta-Gonçalves, D., Kowal, G.&Lazarian, A. Density studies ofMHD interstellar turbulence: statistical moments, correlations and bispectrum. Astrophys. J. 693, 250-266 (2009).
25. Whitley, D. A genetic algorithm tutorial. Stat. Comput. 4, 65-85 (1994).
26. Hill, A. S. et al. The turbulent warm ionized medium: emission measure distribution and MHD simulations. Astrophys. J. 686, 363-378 (2008).
27. Burkhart, B., Stanimirović, S., Lazarian, A. & Kowal, G. Characterizing magnetohydrodynamic turbulence in the Small Magellanic Cloud. Astrophys. J. 708, 1204-1220 (2010).
28. Gaensler, B. M., Madsen, G. J., Chatterjee, S. & Mao, S. A. The vertical structure of warm ionised gas in the Milky Way. Publ. Astron. Soc. Aust. 25, 184-200 (2008).
29. Haverkorn, M., Gaensler, B. M., McClure-Griffiths, N. M., Dickey, J. M. & Green, A. J. The Southern Galactic Plane Survey: polarized radio continuumobservations and analysis. Astrophys. J. 167 (suppl.), 230-238 (2006).
30. Cho, J. & Lazarian, A. Compressible magnetohydrodynamic turbulence: mode coupling, scaling relations, anisotropy, viscosity-damped regime and astrophysical implications. Mon. Not. R. Astron. Soc. 345, 325-339 (2003). (Pubitemid 37291546)