کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1773626 | 1523565 | 2010 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The opposition and tilt effects of Saturn's rings from HST observations
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The opposition and tilt effects of Saturn's rings from HST observations The opposition and tilt effects of Saturn's rings from HST observations](/preview/png/1773626.png)
چکیده انگلیسی
Based on our simulations, the width of the interparticle shadowing effect is roughly proportional to B. This follows from the observation that as B decreases, the scattering is primarily from the rarefied low filling factor upper ring layers, whereas at larger B's the dense inner parts are visible. Vertical segregation of particle sizes further enhances this effect. The elevation angle dependence of interparticle shadowing also explains most of the B ring tilt effect (the increase of brightness with elevation). From comparison of the magnitude of the tilt effect at different filters, we show that multiple scattering can account for at most a 10% brightness increase as B â 26°, whereas the remaining 20% brightening is due to a variable degree of interparticle shadowing. The negative tilt effect of the middle A ring is well explained by the the same self-gravity wake models that account for the observed A ring azimuthal brightness asymmetry (Salo, H., Karjalainen, R., French, R.G. [2004]. Icarus 170, 70-90; French, R.G., Salo, H., McGhee, C.A., Dones, L. [2007]. Icarus 189, 493-522).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 210, Issue 2, December 2010, Pages 785-816
Journal: Icarus - Volume 210, Issue 2, December 2010, Pages 785-816
نویسندگان
Heikki Salo, Richard G. French,