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One‐ versus Two‐Shock Heliosphere: Constraining Models with Goddard High Resolution Spectrograph Lyα Spectra toward α Centauri

  • Authors: K. G. Gayley, G. P. Zank, H. L. Pauls, P. C. Frisch, and D. E. Welty

Gayley et al. 1997 The Astrophysical Journal 487 259.

  • Provider: AAS Journals

Caption: Fig. 2.

Results are depicted for the neutrals of interstellar origin from the two‐dimensional heliospheric models in Table 1. The contours denote log T, the arrows indicate the flow direction, and the shading gives the density normalized to the inflowing interstellar gas density. The results are for (a) model 1 and (b) model 2; model 3 results are intermediate to these. The (c) velocity, (d) temperature, and (e) density profiles along the α Cen sight line for all three models are also shown, where the dashed curve is model 1 (supersonic), the dotted curve is model 2 (subsonic), and the dot‐dashed curve is model 3 (barely subsonic). Negative velocities imply flow toward the Sun.

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