A Novel Mechanism of Pair Creation in Pulsar Magnetospheres

Osmanov, Z.; Machabeli, G. Z.; Chkheidze, N.

doi:10.3390/universe7090331

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…In particular, if the electric field reaches the value 1.4×10 14 statvolt cm −1 , efficient pair production will start via the Schwinger mechanism [14]. Therefore, a next step is to consider a similar problem which we have done for pulsars [20] and study pair cascading in AGN magnetospheres.…”

Section: Discusion and Resultsmentioning

confidence: 99%

Excitation of Langmuir Waves in the Magnetospheres of AGN

Osmanov¹

2023

WJP

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In the paper we study the process of excitation of Langmuir waves in the magnetospheres of active galactic nuclei (AGN), by taking a general-relativistic expression of the GoldreichJulian density into account. We considered the linearised set of equations which describe dynamics of the studied mechanism: the Euler equation, the continuity equation and the Poisson equation. After solving the dispersion relation and obtaining the instability growth rate, we explored it versus several physical parameters: electron’s and proton’s relativistic factors and the mass and luminosity of AGN, which are supposed to be Kerr black holes. We showed that the parametric process of energy pumping into the Langmuir waves is very efficient and the electrostatic field’s amplitude will be exponentially amplifying, which might account for pair creation, particle acceleration and plasma heating processes in the nearby regions of AGN.

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Section: Discusion and Resultsmentioning

confidence: 99%

Excitation of Langmuir Waves in the Magnetospheres of AGN

Osmanov¹

2023

WJP

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“…In a recent paper [3], a new mechanism of pair creation in the magnetospheres of pulsars was presented. In particular, it was shown that since the magnetospheres of pulsars are characterized by rotation, magnetocentrifugal effects might lead to the generation of Langmuir waves.…”

Section: Introductionmentioning

confidence: 99%

Magnetocentrifugal Mechanism of Pair Creation in AGN

Osmanov,

Bodo,

Rossi

2023

Universe

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In this study, we examine the efficiency of pair creation by means of the centrifugal mechanism. The strong magnetic field and the effects of rotation, which always take place in Kerr-type black holes, guarantee the frozen-in condition, leading to the generation of an exponentially amplifying electrostatic field. This field, upon reaching the Schwinger threshold, leads to efficient pair production. Researchers have studied this process across a wide range of AGN luminosities and black hole masses, and found that the mechanism is highly efficient, indicating that for AGNs where centrifugal effects are significant, the annihilation lines in the MeV range will be very strong.

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A Novel Mechanism of Pair Creation in Pulsar Magnetospheres

Cited by 2 publications

References 23 publications

Excitation of Langmuir Waves in the Magnetospheres of AGN

Excitation of Langmuir Waves in the Magnetospheres of AGN

Magnetocentrifugal Mechanism of Pair Creation in AGN

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