How abundant is the population of binary radio pulsars with black holes?

Abstract

Using a 'scenario machine' we have carried out a population synthesis of radio pulsars with black hole binaries (BH+Psr) in the context of the most widespread assumptions concerning star mass loss during evolution, the mass ratio distribution of binary stars, the kick velocity and the envelope mass loss during collapse. Our purpose is to show that under any plausible parameters for the evolution scenario, the BH+Psr population should be abundant in the Galaxy. It is shown that in all models (including those evolved by Heger et al. and Woosley, Heger & Weaver), the expected number of black holes paired with radio pulsars is sufficient for such systems to be discovered within the next few years.

First gravitational-wave burst GW150914: MASTER optical follow-up observations

“…The MASTER Global Robotic Net 1 includes several observatories with identical instruments: MASTER-Amur, MASTER-Tunka, MASTER-Ural, MASTER-Kislovodsk (Russian Federation), MASTER-SAAO (South Africa) and MASTER-IAC (Spain, Canarias), and Very Wide Field cameras (MASTER-VWF) in Argentina (Lipunov et al 2004(Lipunov et al , 2010Kornilov et al 2012;Gorbovskoy et al 2013), see Figure 6 and Table 1. Each MASTER observatory provides a survey speed of 128 deg 2 per hour with a limiting magnitude (in white light) of 19 or 20, respectively, on grey or dark nights.…”

“…A Scenario Machine Prediction of the binary black holes merging as the first events that would be discovered at gravitational interferometers (Lipunov, Postnov & Prokhorov 1997a,b,c) and theoretical analysis are given in the first part of this work (Lipunov et al 2016c). Here we will focus in detail on the optical follow-up observation of the first in the human history gravitational-wave event GW150914 by the MASTER Global Robotic Net.…”

“…Starting from the 2003 we began to develop a program of robotized observations of gamma-ray bursts and another burst-like phenomena (optical transients), see MASTER project description, Lipunov, Bogomazov & Abubekerov (2005); Lipunov et al (2010Lipunov et al ( , 2016d, with the primary aim to perform optical observations of Gamma Ray Bursts (GRBs). We developed the MASTER Global network of identical twin-tube colored wide-field telescopes with realtime reduction deployed both in the Northern and Southern hemispheres (Lipunov et al 2010;Kornilov et al 2012;Gorbovskoy et al 2012).…”

“…We developed the MASTER Global network of identical twin-tube colored wide-field telescopes with realtime reduction deployed both in the Northern and Southern hemispheres (Lipunov et al 2010;Kornilov et al 2012;Gorbovskoy et al 2012).…”

Population synthesis of binary relativistic stars

“…The formation of binaries consisting of a BH in a pair with a radio-pulsar (PSR) has been predicted by Kornilov & Lipunov (1983b) and discussed previously by Narayan et al (1991), Lipunov (1994). Lipunov et al (2005) predicted observable number of such systems: (BH+PSR)/PSR ∼ 1/1500.…”