Detection prospects of the Telescope Array hotspot by space observatories

In the present-day cosmic ray data, the strongest indication of anisotropy of the ultrahigh energy cosmic rays is the 20-degree hotspot observed by the Telescope Array with the statistical significance of 3.4\sigma. In this work, we study the possibility of detecting such a spot by space-based all-sky observatories. We show that if the detected luminosity of the hotspot is attributed to a physical effect and not a statistical fluctuation, the KLYPVE and JEM-EUSO experiments would need to collect ~300 events with E>57 EeV in order to detect the hotspot at the 5\sigma\ confidence level with the 68% probability. We also study the dependence of the detection prospects on the hotspot luminosity.Comment: 4 pages; v2: minor style changes to match the published versio

Singularities inside non-Abelian black holes

Singularities inside static spherically symmetric black holes in the SU(2) Einstein-Yang-Mills and Einstein-Yang-Mills-dilaton theories are investigated. Analytical formulas are presented describing oscillatory and power law metric behavior near spacelike singularities in generic solutions.Comment: REVTeX, 9 pages, 2 EPS figures, uses epsf.st

On the proper time of the earthquake source

The concept of proper time, which is different from universal time, has been introduced into the physics of earthquakes. The global activity of strong earthquakes was chosen as the object of study. We consider the sequence of earthquakes as a random process of the Poisson type. Comparatively weak earthquakes are used as the underground clock, the ticking of which marks the course of proper time. The Poisson distribution is compared with the distributions for two sequences of strong earthquakes. One of the sequences is ordered by calendar time, and the second by proper time. The result of the test showed that the distribution of events ordered by proper time is closer to the Poisson distribution than the distribution of events ordered by calendar time. We explain this by non-stationarity, which is an immanent property of the Earth's lithosphere.Comment: 9 pages, 5 figure

Power supply of autonomous systems using solar modules

The article shows the methods of constructing autonomous decentralized energy systems from solar modules. It shows the operation of up DC inverter. It demonstrates the effectiveness of DC inverters with varying structure. The system has high efficiency and low level of conductive impulse noise and at the same time the system is practically feasible. Electrical processes have been analyzed to determine the characteristics of operating modes of the main circuit elements. Recommendations on using the converters have been given

Influence of professional and business goals and the source of financing on the status of the subject of a business trip

The article considers the main approaches to the definition of the concept of “business traveler” and its relationship with the system of business tourism. The paper investigates approaches to the definition of business tourism and determines the internal subject field regarding the system of business tourism in Russia. The author reveals the main types of business tourism. The study describes in detail the stages of the formation of business tourism in the world and in Russia over the past 30 years of development. The publication formulates the most typical goals of the business travel system. The article analyses the relationship of the business travel system with the MICE industry and its impact on the organization of business meetings, congresses and exhibitions. The paper describes the options of business travel and business travel carried out within the framework of business tourism activities. The author reveals the inner content of the MICE-industry of business tourism. The study gives the characteristics of the main components of the MICE industry. The paper analyses the differences between business tourism and business travel for cultural and entertainment purposes. The author formulates the current tasks of the MICE industry and the business travel system development