2,829,178 книг
895,400 авторов
126,126 рубрик

Указатель авторов
Найди книгу
Добавь книгу
Услуги авторам ***

Последние рецензии
Последние предложения

Самые популярные

Интересные факты
Информация о проекте

Куплю - предложения о покупке книг
Продам - объявления о продаже книг
Ищу - объявления о поиске информации
Предложи свою книгу на продажу
Попроси нужную тебе книгу (обмен/продажа)


Тикунова Л. И., Игнатьева Т. В.
300 учебных текстов, проверочных работ и тестов по чтению для начальной школы
Куплю по вашец цене. (далее...)

Рецензия на книгу

Остин Аткинсон
Столкновение с Землей. Астероиды, кометы и метеороиды. Растущая угроза
Just this morning I have red in a press [7] about the discovery of a very fast object fallen to the Earth which has an impact velocity of 315431 km/h, which equals to about 86 km/s. It is easy to check that there is no such an object inside the Solar system, which can provide such a great impact speed. Indeed, the inner planets (Mercury and Venus) can’t provide an object which would impacts frontally the Earth. At the same time only outer planets (Mars,. Jupiter, Saturn, Uran and other and their satellites) and asteroids can provide In principle frontally flying objects. Unfortunatelly, the orbital speeds of outer planets and asteroids are too small to provide the needed 87, 619 km/s. So that it is necessary to imply planets satellites like Io, Ganimede, Europe, Callisto and other or other planets satellites (Mars's and Saturn's satellites) which could escape from their Newtonian orbits around maternal planets and fall frontally to the Earth. Indeed it is easy to convince after short calculations that no such Planets satellites can exist inside the Solar system to provide such a great impact velocity (see, e.g.[1]. Then, a natural question is: What has happened? What Is the object, which was called: 1I/'Oumuamua (A/2017 U1). To the moment a number of 60 papers (mainly in the Astrophysical Journal but also in the Astrophysical Journal Letters. MNRAS, Arhive articles and other) were published which has in title the 1I/'Oumuamua (A/2017 U1) Object/Event. I have seen the titles of this articles and found there only the mentioned above 1) Asteroid hypothesis and 2) Cometary hypothesis as possible explanation of the 1I/'Oumuamua (A/2017 U1) Event. Unfortunately, to my numerical estimations no the Cometary hypothesis can explain the Event, including the Comets lying near Jupiter, or long period outer to the Earth Comets. An estimation of an explosive destruction of a Long Period Cometary Nucleus originated from the outer Regions of the Solar systems would be given later. As a preliminary result no a cometary Nucleus originated from the out of the Solar System can provide after a destruction a fragment which can fall onto the Earth with necessary Speed. Here I would like to suggest, that the only possible explanation of the object 1I/'Oumuamua (A/2017 U1) is a Companion object of the Sun. As white dwarfs (stars less or comparable with the Sun in mass) would cause kinematic effects which can be detected by astronomical observations relatively the Far stars, the only candidate possible to explain the phenomenon is a Primordial Non evaporated Black Hole with a mass: M>> MHawking = 10^15 g [2], but much less than the mass of the Sun: Msun=2x10^30 kg. Such a Black Hole could form dark matter shell around them by a process of Bose instability[3,4] , which later can be ejected to the Sun and, eventually fall frontally to the Earth. In principle, another explanation can be a Binary of Primordial Black Hole with a stoun, but there is need to explain were from the stoun originate there around the Black Hole? In conclussion, We have the Sun with its Planets, including the Earth and small asteroids. But Out of the Sun We have another Binary (or perhaps, Multiple) System, consisting of a Nonevaporated Primordial Black Hole and a satellite, whose origin can be an Intrinsec one (Dark Matter generated by the Black Hole itself [7]), or a fallen/captured object from the outer space, which fallen to the Earth frontally with the speed of about 87, 619 km/s. In this case there is no need to require a frontal fall to the Earth, as speeds of BH’s satellites can be much greater than needed 57 km/s [5] References: 1. Anuarul Astronomic Roman, Published by Romanian Academy, 2014 2. Hawking, S., Nature, 248, 1974; Commun. Math. Phys., 1975, 3. Damour, Deruelle, Ruffini, Lett. Nuov. Cim., 1976, 4. Ternov, I.M., Khalilov, V.R., Chizhov, G.A., Gaina, A.B., 1978 5. Kelly Beathy, Sky and Telescope, Oct. 25, 2017 6. Cyncynate

ISGRG, EMS Member, АB Gaina

Валько Иван Васильевич
Куда летишь журавлик?
Хочу найти и приобрести книгу И.Валько "Куда летиш... (далее...)

Cообщить об ошибке на этой странице

Copyright (c) Biblus Inc., 2000-2015