好看书吧

对火星轨道变化问题的最后解释(第1/10页)

好看书吧【haokanshuba.com】第一时间更新《死在火星上》最新章节。

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。

那么作者君在此列出相关参考文献中的一篇开源论文。

以下是文章内容:

long-term

integrations

and

stability

of

plaary

orbits

in

our

solar

system

abstract

we

present

the

results

of

very

long-term

numerical

integrations

of

plaary

orbital

tions

over

109

-yr

time-spans

inc露ding

all

nine

plas.

a

quick

inspection

of

our

numerical

data

shows

that

the

plaary

tion,

at

least

in

our

simple

dynamical

del,

seems

to

be

quite

stable

even

over

this

very

long

time-span.

a

closer

look

at

the

lowest-frequency

oscillations

using

a

low-pass

filter

shows

us

the

potentially

diffusive

character

of

terrestrial

plaary

tion,

especially

that

of

mercury.

the

behaviour

of

the

eentricity

of

mercury

in

our

integrations

is

qualitatively

similar

to

the

results

from

jacques

laskars

secular

perturbation

theory

(e.g.

emax~

0.35

over

~±

4

gyr).

however,

there

are

no

apparent

secular

increases

of

eentricity

or

inclination

in

any

orbital

elements

of

the

plas,

which

may

be

revealed

by

still

longer-term

numerical

integrations.

we

have

also

performed

a

couple

of

trial

integrations

inc露ding

tions

of

the

outer

five

plas

over

the

duration

of

±

5

x

1010

yr.

the

result

indicates

that

the

three

major

resonances

in

the

neptune–p露to

system

have

been

maintained

over

the

1011-yr

time-span.

1

introduction

1.1definition

of

the

problem

the

question

of

the

stability

of

our

solar

system

has

been

debated

over

several

混dred

years,

since

the

era

of

newton.

the

problem

has

attracted

many

faus

mathematicians

over

the

years

and

has

played

a

central

role

in

the

development

of

non-linear

dynamics

and

chaos

theory.

however,

we

do

not

yet

have

a

definite

answer

to

the

question

of

whether

our

solar

system

is

stable

or

not.

this

is

partly

a

result

of

the

fact

that

the

definition

of

the

term

‘stability’

is

vague

when

it

is

used

in

relation

to

the

problem

of

plaary

tion

in

the

solar

system.

actually

it

is

not

easy

to

give

a

clear,

rigorous

and

physically

meaningful

definition

of

the

stability

of

our

solar

system.

ang

many

definitions

of

stability,

here

we

adopt

the

hill

definition

(gladman

1993):

actually

this

is

not

a

definition

of

stability,

but

of

instability.

we

define

a

system

as

being

unstable

when

a

close

encounter

ours

somewhere

in

the

system,

star

from

a

certain

initial

configuration

(chambers,

wetherill

boss

1996;

ito

tanikawa

1999).

a

system

is

defined

as

experiencing

a

close

encounter

when

two

bodies

approach

one

another

within

an

area

of

the

larger

hill

radius.

otherwise

the

system

is

defined

as

being

stable.

henceforward

we

state

that

our

plaary

system

is

dynamically

stable

if

no

close

encounter

happens

during

the

age

of

our

solar

system,

about

±5

gyr.

incidentally,

this

definition

may

be

replaced

by

one

in

which

an

ourrence

of

any

orbital

crossing

between

either

of

a

pair

of

plas

takes

place.

this

is

because

we

know

from

experience

that

an

orbital

crossing

is

very

likely

to

lead

to

a

close

encounter

in

plaary

and

protoplaary

systems

(yoshinaga,

kokubo

makino

1999).

of

course

this

statement

cannot

be

simply

applied

to

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