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Search for giant pulses of radio pulsars at frequency 111 MHz with LPA radio telescope

Research in Astronomy and Astrophysics 2018年第8期18卷 71-82页

作者： andrey nikolaevich kazantsev Vladimir Alexeevich Potapov E N.Lebedev Physical Institute of the Russian Academy of Sciences Pushchino Radio Astronomy ObservatoryPushchino 142290Russia

We have used the unique low frequency sensitivity of the Large Phased Array （LPA） radio telescope of Pushchino Radio Astronomy Observatory to collect a dataset consisting of single pulse observations of second period pulsars in the Northern Hemisphere. During observation sessions in 2011- 2017, we collected data on 71 pulsars at a frequency of 111 MHz using a digital pulsar receiver. We have discovered Giant Radio Pulses （GRPs） from pulsars B0301＋09 and B 1237＋25, and confirmed earlier reported generation of anomalously strong （probable giant） pulses from B 1133＋16 in a statistically significant dataset. Data for these pulsars and from B0950＋08 and B 1112＋50, earlier reported as pulsars generating GRPs, were analyzed to evaluate their behavior over long time intervals. It was found that the statistical criterion （power-law spectrum of GRP distribution of energy and peak flux density） seems not to be strict for pulsars with a low magnetic field at their light cylinder. Moreover, spectra of some of these pulsars demonstrate unstable behavior with time and have a complex multicomponent shape. In the dataset for B0950＋08, we have detected the strongest GRP from a pulsar with a low magnetic field at its light cylinder ever reported, having a peak flux density as strong as 16.8 kJy.

关键词： stars neutron - pulsars general - pulsars individual (PSR B0301+19 PSR B0320+39 PSR B0329+54 PSR B0809+74 PSR B0950+08 PSR B1112+50 PSR B1133+16 PSR B1237+25) - pulsars giant pulses individual pulses

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Photon and Graviton: Similarity and Distinctions

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Journal of High Energy Physics, Gravitation and Cosmology 2022年第4期8卷 1110-1126页

作者： andrey nikolaevich Volobuev Department of Physics Samara State University Samara Russia

Two elementary particles—a photon and a graviton—responsible for interaction with physical objects of two long-range action fields electromagnetic and gravitational are considered. The similarity and distinction of these quantum particles are investigated. It is shown that these particles essentially differ from each other. First of all, they are in different spaces. The photon is in photon space, and the graviton is in Riemann’s space-time. Interaction of a photon and a mass body cannot be calculated in Euclidian space. Interaction of a graviton and a mass body can be calculated in the Euclidian space. Polarizing properties of a gravitational wave both in plane Minkowski’s space, and in curved Riemann’s space-time are in detail considered. The differential equation of a gravitational quantum oscillator is found and its solution is analyzed. Also, the quantum metrics of Riemann’s space-time in presence of graviton and its quantum numbers are found.

关键词： Photon Graviton Gravitational Wave Riemann’s Space–Time Scalar Curvature Polarization Quantization Metric Tensor

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Biophysical Substantiation of a Surgical Method of Treatment of a Primary Arterial Hypertension

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Journal of Physical Science and Application 2013年第2期3卷 94-102页

作者： andrey nikolaevich Volobuev Eugene Sergeevich Petrov Department of Medical and Biological Physics Samara State Medical University Samara 443079 Russia

It is shown that flow of a blood in a passive elastic tube essentially unstable process accompanying with a flutter of a stream. Biophysical principles of neuroreflex regulation of an arterial bloodstream in cardiovascular system are considered. It is shown that this regulation has dual-purpose character： reduction of the hydraulic resistance and maintenance stable no flutter stream of blood. The reasons of a primary arterial hypertension occurrence, and also some accompanying it physical and physiological phenomena are considered. The surgical method of treatment of the primary arterial hypertension, connected with denervation of renal arteries is substantiated.

关键词： Flutter of stream primary arterial hypertension neuroreflex regulation denervation of renal arteries.

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X-Ray and VUV Spectra from the Laser Plasma Produced with “Kanal-2” Facility

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Journal of Modern Physics 2014年第2期5卷 92-97页

作者： andrey Aleksandrovich Kologrivov Mikhail Vladimirovich Osipov Victor nikolaevich Puzyrev Alexandr nikolaevich Starodub Oleg Feliksovich Yakushev P. N. Lebedev Physical Institute of RAS Moscow Russia

The paper presents experimental results obtained on “Kanal-2” facility. Laser radiation focusing on the surface of plane magnesium targets created the high temperature plasma, which emitted X-ray and vacuum ultraviolet (VUV) radiation. This radiation spectrum was investigated with two spectrographs: the mica crystal spectrograph (working range 8.2 ? - 9.6 ?) and the grazing incidence VUV spectrograph (working rage 30 ? - 130 ?). A set of beryllium stepwise attenuators appended the diagnostic complex and allowed us to get an approximated picture of a continuous spectrum within the range of 2.2 ? - 6.2 ?. The estimation of the plasma electron temperature Te from the ratio between the intensity of the dielectronic satellites and the resonance line gives Te ~ 180 eV. The ratio between the intensity of the resonance and intercombination lines gives the electron density of the emitting zone ne ~ 2 × 1019 cm-3. Some lines observed within the spectral range of 8.5 ? - 9.1 ? belong to none of the transitions of Mg ions. Perhaps the observed spectrum is determined by the transitions in so-called hollow ions of Mg, i.e. in the ions with unfilled inner shells. The spectra obtained with the grazing incidence spectrograph and with the minimum-directioned discrepancy iteration method of spectrum reconstruction from the attenuation curve in the beryllium stepwise attenuators are also presented.

关键词： Laser Plasma X-Ray Spectra VUV Spectra Plasma Diagnostics

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