153 citations · 2.1k across the 124 of their papers we have counts for
57 papers · 1 filter
Scenarios for GCRT J1745-3009
S. B. Popov
I discuss several scenarios to explain properties of the radio transient source GCRT J1745-3009. Namely, a highly magnetized neutron star on the propeller or georotator stage, a tr…
Soft gamma repeaters activity in time
S. B. Popov
In this short note I discuss the hypothesis that bursting activity of magnetars evolves in time analogously to the glitching activity of normal radio pulsars (i.e. sources are more…
The needle in the haystack - Where to look for more isolated cooling neutron stars
B. Posselt, S. B. Popov, F. Haberl +4
Context: Isolated cooling neutron stars with thermal X-ray emission remain rarely detected objects despite many searches investigating the ROSAT data. Aims: We simulate the populat…
Hyperflares of SGRs as an engine for millisecond extragalactic radio bursts
S. B. Popov, K. A. Postnov
We propose that the strong millisecond extragalactic radio burst (mERB) discovered by Lorimer et al. (2007) may be related to a hyperflare from an extragalactic soft gamma-ray repe…
Conversion of Dark matter axions to photons in magnetospheres of neutron stars
M. S. Pshirkov, S. B. Popov
We propose a new method to detect observational appearance of Dark Matter axions. The method utilizes observations of neutron stars (NSs) in radio. It is based on the conversion of…
A Search for Pulsed and Bursty Radio Emission from X-ray Dim Isolated Neutron Stars
V. I. Kondratiev, M. Burgay, A. Possenti +5
We have carried out a search for radio emission from six X-ray dim isolated neutron stars (XDINSs) observed with the Robert C. Byrd Green Bank Radio Telescope (GBT) at 820 MHz. No…
Space cowboys odyssey: beyond the Gould Belt
S. B. Popov, B. Posselt, F. Haberl +3
We present our new advanced model for population synthesis of close-by cooling NSs. Detailed treatment of the initial spatial distribution of NS progenitors and a detailed ISM stru…
On the dynamical formation of accreting intermediate mass black holes
A. G. Kuranov, S. B. Popov, K. A. Postnov +2
We compute the probability that intermediate mass black holes (IMBHs) capture companions due to dynamical interactions and become accreting sources, and explore the possibility tha…
Be born slow or die fast: spin evolution of neutron stars with alignment or counteralignment
S. A. Eliseeva, S. B. Popov, V. S. Beskin
We revisit the case of magneto-rotational evolution of neutron stars (NSs) with accounting for changes of the angle χbetween spin and magnetic axes. This element of the evolution o…
The Zoo of Neutron Stars
S. B. Popov
In these lecture notes I briefly discuss the present day situation and new discoveries in astrophysics of neutron stars focusing on isolated objects. The latter include soft gamma…
The Magnificent Seven in the dusty prairie -- The role of interstellar absorption on the observed neutron star population
B. Posselt, S. B. Popov, F. Haberl +3
The Magnificent Seven have all been discovered by their exceptional soft X-ray spectra and high ratios of X-ray to optical flux. They all are considered to be nearby sources. Searc…
Neutron star masses: dwarfs, giants and neighbors
S. B. Popov, D. Blaschke, H. Grigorian +1
We discuss three topics related to the neutron star (NS) mass spectrum. At first we discuss the possibility to form low-mass () and suggest this…
A tale of two populations: Rotating Radio Transients and X-ray Dim Isolated Neutron Stars
S. B. Popov, R. Turolla, A. Possenti
We highlight similarities between recently discovered Rotating Radio Transients and X-ray Dim Isolated Neutron Stars. In particular, it is shown that X-ray Dim Isolated Neutron Sta…
Nearby young single black holes
M. E. Prokhorov, S. B. Popov
We consider nearby young black holes formed after supernova explosions in close binaries whose secondary components are currently observed as the so-called runaway stars. Using dat…
Magnetars origin and progenitors with enhanced rotation
S. B. Popov, M. E. Prokhorov
Among a dozen known magnetar candidates there are no binary objects. As an estimate of a fraction of binary neutron stars is about 10% it is reasonable to address the question of s…
Be/X-ray binaries and candidates: catalogue
N. V. Raguzova, S. B. Popov
We present a compilative catalogue of Be/X-ray binaries and candidates in the Galaxy and in the Large and Small Magellanic Clouds. This catalogue contains 130 sources and provides…
Soft gamma repeaters outside the Local group
S. B. Popov, B. E. Stern
We propose that the best sites to search for SGRs outside the Local group are galaxies with active massive star formation. Different possibilities to observe SGR activity from thes…
Soft gamma repeaters and starforming galaxies
S. B. Popov
We propose that the best sites to search for SGRs outside the Local group are galaxies with active star formation. Different possibilities to observe SGR activity from these sites…
Trans-sonic propeller stage
S. B. Popov, M. E. Prokhorov
We follow the approach used by Davies and Pringle (1981) and discuss the trans-sonic substage of the propeller regime. This substage is intermediate between the supersonic and subs…
Formation of massive skyrmion stars
S. B. Popov, M. E. Prokhorov
As it is well known for stiff equations of state an existence of neutron stars with masses $\ga 2 M_{\sun}$ is possible. Especially interesting possibility is opened if the equatio…
Population synthesis as a probe of neutron star thermal evolution
S. Popov, H. Grigorian, R. Turolla +1
The study of thermal emission from isolated, cooling neutron stars plays a key role in probing the physical conditions of both the star crust and the core. The comparison of theore…
Close by Compact Objects and Recent Supernovae in the Solar Vicinity
S. B. Popov
I discuss young close-by compact objects, recent supernovae in the solar neighbourhood, and point to their connection with cosmic ray studies. Especially the role of the Gould Belt…
Age-Distance diagram for close-by young neutron stars
S. B. Popov
An age--distance diagram for close-by young isolated neutron stars of different types is introduced and discussed. It is shown that such a diagram can be a useful tool for studying…
On the mechanism of low-mass compact object formation
S. B. Popov
We suggest that low-mass compact objects (hadron stars, quark stars) with can appear only due to fragmentation of rapidly rotating proto-neutron stars. Such low-mas…