A large coronal loop in the Algol system

Nature

Volumn 463, Issue 7278, 2010, Pages 207-209

  Peterson, W M ^a   Mutel, R L ^a   Gudel M ^b   Goss, W M ^c  

^a UNIVERSITY OF IOWA   (United States)

^b ETH ZURICH   (Switzerland)

^c NATIONAL RADIO ASTRONOMY OBSERVATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CORONA; EXTRATERRESTRIAL MATTER; GEODYNAMO; MAGNETIC FIELD; MAGNETOSPHERE; SOLAR SYSTEM;

ARTICLE; ASTRONOMY; CHEMICAL STRUCTURE; COSMOS; INTERFEROMETRY; MAGNETIC FIELD; MAGNETISM; PRIORITY JOURNAL; SYNCHROTRON RADIATION; X RAY;

EID: 74549157972     PISSN: 00280836     EISSN: 14764687     Source Type: Journal    
DOI: 10.1038/nature08643     Document Type: Article

References (29)

1. Chung, S. M., Drake, J. J., Kashyap, V. L., Lin, L. W. & Ratzlaff, P. W. Doppler shifts and broadening and the structure of the X-ray emission from Algol. Astrophys. J. 606, 1184-1195 (2004).
2. Mutel, R. L., Molnar, L. A., Waltman, E. B. & Ghigo, F. D. Radio emission from Algol. I. Coronal geometry and emission mechanisms determined from VLBA and Green Bank Interferometer observations. Astrophys. J. 507, 371-383 (1998).
3. Ness, J.-U., Güdel, M., Schmitt, J. H. M. M., Audard, M. & Telleschi, A. On the sizes of stellar X-ray coronae. Astron. Astrophys. 427, 667-683 (2004).
4. Retter, A., Richards, M. T. & Wu, K. Evidence for superhumps in the radio light curve of Algol and a new model for magnetic activity in Algol systems. Astrophys. J. 621, 417-424 (2005).
5. Aschwanden, M. J., Poland, A. I. & Rabin, D. M. The new solar corona. Annu. Rev. Astron. Astrophys. 39, 175-210 (2001).
6. Mullan, D. J., Mathioudakis, M., Bloomfield, D. S. & Christian, D. J. A comparative study of flaring loops in active stars. Astrophys. J. Suppl. Ser. 164, 173-201 (2006).
7. Rosner, R., Tucker, W. H. & Vaiana, G. S. Dynamics of the quiescent solar corona. Astrophys. J 220, 643-645 (1978).
8. Beasley, A. J. & Güdel, M. VLBA imaging of quiescent radio emission from UX Arietis. Astrophys. J. 529, 961-967 (2000).
9. Lestrade, J.-F., Mutel, R. L., Preston, R. A. & Phillips, R. B. Dual-frequency and dual-polarization VLBI observations of the stellar system Algol. Astrophys. J. 328, 232-242 (1988).
10. Massi, M., Franciosini, E., Paredes, J. M. & Estalella, R. Investigation of stellar loop structures using VLBI. N. Astron. Rev. 43, 539-543 (1999).
11. Mutel, R. L., Lestrade, J. F., Preston, R. A. & Phillips, R. B. Dual polarization VLBI observations of stellar binary systems at 5 GHz. Astrophys. J. 289, 262-268 (1985).
12. Ransom, R. R. et al. Possible corotation of the milliarcsecond radio structure of the close binary HR 1099. Astrophys. J. 572, 487-502 (2002).
13. Fey, A. L. et al. Merlin astrometry of 11 radio stars. Astron. J. 131, 1084-1089 (2006).
14. Lestrade, J.-F., Phillips, R. B., Hodges, M. W. & Preston, R. A. VLBI astrometric identification of the radio emitting region in Algol and determination of the orientation of the close binary. Astrophys. J. 410, 808-814 (1993).
15. Gatewood, G., de Jonge, J. K. & Heintz, W. D. Astrometric studies in the region of Algol. Astron. J. 109, 434-439 (1995).
16. Pan, X., Shao, M. & Colavita, M. M. High angular resolution measurements of Algol. Astrophys. J. 413, L129-L131 (1993).
17. Schmitt, J. H. M. M. & Favata, F. Continuous heating of a giant X-ray flare on Algol. Nature 401, 44-46 (1999).
18. Schmitt, J. H. M. M., Ness, J. U. & Franco, G. A spatially resolved limb flare on Algol B observed with XMM-Newton. Astron. Astrophys. 412, 849-855 (2003).
19. Boboltz, D. A. et al. Very Large Array plus Pie Town astrometry of 46 radio stars. Astron. J. 133, 906-916 (2007).
20. Warren, H. P., Winebarger, A. R. & Mariska, J. T. Evolving active region loops observed with the transition region and coronal explorer. II. Time-dependent hydrodynamic simulations. Astrophys. J. 593, 1174-1186 (2003).
21. Dulk, G. A. Radio emission from the sun and stars. Annu. Rev. Astron. Astrophys. 23, 169-224 (1985).
22. Petit, P. et al. Toroidal versus poloidal magnetic fields in sun-like stars: a rotation threshold. Mon. Not. R. Astron. Soc. 388, 80-88 (2008).
23. Morin, J. et al. Large-scale magnetic topologies of mid M dwarfs. Mon. Not. R. Astron. Soc. 390, 567-581 (2008).
24. Ottmann, R. Structure and stability of the X-ray corona of Algol. Astron. Astrophys. 286, L27-L30 (1994).
25. Albright, G. E. & Richards, M. T. Doppler tomography of accretion disks in Algol binaries. Astrophys. J. 459, L99-L102 (1996).
26. Richards, M. T., Waltman, E. B., Ghigo, F. D. & Richards, D. S. P. Statistical analysis of 5 year continuous radio flare data from b Persei, V711 Tauri, d Librae, and UX Arietis. Astrophys. J. Suppl. Ser. 147, 337-361 (2003).
27. Franciosini, E., Massi, M., Paredes, J. M. & Estalella, R. Flaring loop structures at VLBI scale in UX Arietis. Astron. Astrophys. 341, 595-601 (1999).
28. Favata, F., Micela, G., Reale, F., Sciortino, S. & Schmitt, J. H. M. M. The structure of Algol's corona: a consistent scenario for the X-ray and radio emission. Astron. Astrophys. 362, 628-634 (2000).
29. Rogers, A. E. E. VLBI phase reference mapping techniques and the search for the third image of 09571561. Lecture Notes Phys. 330, 77-81 (1989).