对火星轨道变化问题的最后解释
作者君在作品相关中其实已经解释过这个问题。
不过仍然有人质疑——“你说得太含糊了”,“火星轨道的变化比你想象要大得多!”
那好吧,既然作者君的简单解释不够有力,那咱们就看看严肃的东西,反正这本书写到现在,嚷嚷着本书BUG一大堆,用初高中物理在书中挑刺的人也不少。
以下是文章内容:
ts r system
Abstract
ets. on, -span. g ar'ry (e.g. emax~ 0.35 over ~± 4 Gyr). performed ± 5 × . -span.
1 Introduction
lem
ed have er em partly it on to give em.
): is not define erill & ; Ito & ). experiencing in em le if em, about ± ly bo & ). ot em.
arch
em show s (Sussman & , 1992). being ay & ; klin & ). itions.
man & ; Kinoshita & ). e er od. Duncan & ). em in Duncan & Lissauer' be , er. Duncan & on Neptune), r ~. llations.
), ). Laskar' grations.
r ts, covering ring ± 5 × . 5 e, ± r is ared ss ), – grations.
In Section 2 ion 3 on ents. rs n. Section to ts using udes Section 5, we present spans ± 5 × . In Section 6 e.
grations
(本部分涉及比较复杂的积分计算,作者君就不贴上来了,贴上来了起点也不一定能成功显示。)
2.od
We utilize od (Wisdom & ; ida & ) with r & , 1994).
8 ets (N±1,2,3), about 1/11 et (Mercury). Sussman & , 7.2 & , d). 8 stepsize 2 r om & ) with 400 d, 1/10.83 s to Jupiter (~0.05) of Mercury (~0.2), ly stepsizes.
planets (F±), 400 d.
s' f and Halley' grations.
ut d (~) ets (N±1,2,3), 000 d (~) planets (F±).
applied er Section 4. detail.
2.mation
2.4.rs ntum
( ntum), rs gy (~10? ntum (~10? od (Fig. 1). r gy more.
r ntum δA/ gy δE/E0 grationsN± 1,2,3, where δE and δ ge is Gyr.
lt l of Fig. 1, r ision.
2.4. itudes
, r of planets, i.r r performed 0.125 d (1/64 ning 3 × , in the N? with , gration, N? 3 × , we see ~0.52°( of the N?1 integration). °, r r . r ~12°. o Kinoshita & ) ~60°.
lts –
. on place.
3. ts
e n in Figs 2 and ts integrations (b) and (d). at present.
s grationsN± e ntum.(+1 ( t = 0 to 0.0547 × 10 9 yr).(+1 ( t = 4.9339 × 10 8 to 4.9886 × 10 9 yr).( N?1 (0 to ?0.0547 × ).(?1 ( t =?3.9180 × 10 9 to ?3.9727 × 10 9 yr). l, yr over 5.47 × . s ts DE245).
gration N+1 Fig. 4. . s to ets; be Laskar') ar r in Section ents.
on ion 5).
3.
ct . ).
ge ) , –. r le – Laskar') ysis.
th ld be 2 FFT.
: ati+ ti+δT≤ti+δT+. l we reach er N + th.
obtain rams.
t.
ld , i.s , where1,…, n). ents.
to ( of Gbytes).
Fig. N+ Fig. nd it. the N+ element.
4. ntum
ents L, G, H. G and . L gy μ e grations.
In Fig. gration N+ E0), ntum ( G- G0), onent ( H- H0) , G0, es es n rely an planets.
e : simply ner 4 in Fig. tal theinner to nt as ions.
4. et pairs
gy N+1 and N? s h make . em , shows s to be ed ystem.
It r bits s up . Brouwer & ; Boccaletti & ). h e). ly , ly to gy .
h pair.
5 ± 5 × ts
es, em as em e, we added span ± 5 × , Pluto). . 12), . , age.
r ~10? ~10?10.
5. o system
Kinoshita & ) ts over ± 5.5 × . d ription,λ itude,Ω and ? cripts P and une.
Pluto (3:2). ment3 λP? 2 λN?? ° and od of about 2 × .
PlutoP?Ωnd 90° with about 3.8 × . ).
Neptune,P?Ω θ θ, i. s °. When θ°, ° iams & ) li & ).
An argumentP??N+ 3 (ΩP?Ω od,~ 5.7 × .
resonances (i)–( ments θ1,θ2,θ –16 ). ) ment θ . 17). shita & Nakai') disclose.
6 Discussion
k to be a 5: t inequality’), . re em, & , 2001). radii (R_), , es.
em fective; O( Jupiter), ed ng O(eJ). example O(eJ)~0.05, ets (> em over on oing.
er mics.
——以上文段引自 Ito, T.& Tanikawa, ts . Not. . (2002)
这只是作者君参考的一篇文章,关于太阳系的稳定性。
还有其他论文,不过也都是英文的,相关课题的中文文献很少,那些论文下载一篇要九美元(《Nature》真是暴利),作者君写这篇文章的时候已经回家,不在检测中心,所以没有数据库的使用权,下不起,就不贴上来了。
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