笔趣阁 > 死在火星上 > 对火星轨道变化问题的最后解释

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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