Referat and Exam of Diana Vakina - mp-me<mn<mp

Moderators: Konstantin Belotsky, Maxim Khlopov

Re: Diana Vakina - mp-me<mn<mp

New postby Vakina mephi on Sat 12 Jan 2013 00:01

Добрый вечер, Максим Юрьевич!
Прикрепляю новую версию реферата.
Attachments
5.doc
(154 KiB) Downloaded 321 times
Vakina mephi
 
Posts: 8
Joined: Tue 23 Oct 2012 21:15


Re: Diana Vakina - mp-me<mn<mp

New postby Maxim Khlopov on Sat 12 Jan 2013 13:22

Dear Diana,
Let's stop work on your text.
You are admitted to exam, but, please, prepare an answer to the following question:
You have mirror helium atoms and free neutrons. Mirror helium forms stars. What is the fraction of free neutrons in these stars?
Regards
M.Yu.Khlopov
[i]Хлопов Максим Юрьевич
Maxim Khlopov[/i]
User avatar
Maxim Khlopov
Administrateur du site
 
Posts: 1934
Joined: Sat 9 Aug 2008 19:42
Location: Paris


Re: Referat and Exam of Diana Vakina - mp-me<mn<mp

New postby Vakina mephi on Sat 12 Jan 2013 17:12

Максим Юрьевич, мне необходимо произвести оценку(посчитать) долю свободных нейтронов в конечном итоге, после горения Не и образования хим.состава или же повториться,что доля свободных нейтронов составляет не более 25%?
Vakina mephi
 
Posts: 8
Joined: Tue 23 Oct 2012 21:15


Re: Referat and Exam of Diana Vakina - mp-me<mn<mp

New postby Maxim Khlopov on Sat 12 Jan 2013 18:01

Dear Diana,
My question is simpler:
Assume that mirror helium atoms form mirror stars while free mirror neutrons are collisionless gas in the Galaxy.
The number density of this mirror neutron gas is determined as the fraction of mirror neutrons in the total dark matter.
When free neutron hits the surface of mirror star it is captured by star.
You can take for definiteness the size of Sun for mirror stars and calculate the amount of free neutrons that are captured by star during the age of Galaxy (you can take it as the age of the Universe).
Regards
M.Yu.Khlopov
[i]Хлопов Максим Юрьевич
Maxim Khlopov[/i]
User avatar
Maxim Khlopov
Administrateur du site
 
Posts: 1934
Joined: Sat 9 Aug 2008 19:42
Location: Paris


Exam of Diana Vakina 1 semester

New postby Maxim Khlopov on Sun 7 Apr 2013 18:56

Record of exam of D.Vakina 1 semester
[i]Хлопов Максим Юрьевич
Maxim Khlopov[/i]
User avatar
Maxim Khlopov
Administrateur du site
 
Posts: 1934
Joined: Sat 9 Aug 2008 19:42
Location: Paris


Previous

Return to КУРС ПО КОСМОМИКРОФИЗИКЕ 2012/2013

Who is online

Users browsing this forum: No registered users and 62 guests

cron