APAO 2012, Теория, Група α — Задача 5. Comet Holmes

VIII Азиатско-Тихоокеанская астрономическая олимпиада · VIII Asian-Pacific Astronomy Olympiad · Theoretical round · 26 ноември 2012 г.

Условие

Comet Holmes (17P Holmes) has been known since 1892, being an unremarkable object of $17^{\mathrm{th}}$ magnitude for many years. Based on computations, the diameter of comet's nucleus was estimated to $d_0=3.4\ \mathrm{km}$. And a few years ago it presented a surprise for all astronomers. In two days on October 23-25, 2007, its brightness suddenly increased many thousands times. As per one of the first versions, of the nucleus of the comet collided with some microcosmic celestial body, and as a result, there was a great explosion, and the nucleus fell apart into many small fragments. The graph shows the magnitude of the comet versus time for the days of outburst. Estimate approximately in how many fragments Comet Holmes was disintegrated according to this model. What was the average size of a fragment?

Решение

Теми и трудност

Оценена трудност: 5/5.

Светлина и астрономически измервания · Звездни величини

Предпоставки: Гимназиална подготовка, Разширена олимпиадна подготовка

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Оригинал в Архива: alphatheo.pdf