Gamma‐Ray Bursts from Evolved Galactic Nuclei

Dokuchaev, V. I.; Eroshenko, Yurii N.; Ozernoy, L. M.

doi:10.1086/305868

Cited by 17 publications

(26 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The corresponding rate of NS collisions in the cluster (with the gravitational radiation losses taken into account) is [14]- [16] N c = 9…”

Section: Fireballs In Clustermentioning

confidence: 99%

Hidden source of high-energy neutrinos in collapsing galactic nucleus

Berezinsky

2001

Astroparticle Physics

View full text Add to dashboard Cite

We propose the model of a short-lived very powerful source of high energy neutrinos. It is formed as a result of the dynamical evolution of a galactic nucleus prior to its collapse into a massive black hole and formation of high-luminosity AGN. This stage can be referred to as "pre-AGN". A dense central stellar cluster in the galactic nucleus on the late stage of evolution consists of compact stars (neutron stars and stellar mass black holes). This cluster is sunk deep into massive gas envelope produced by destructive collisions of a primary stellar population. Frequent collisions of neutron stars in a central stellar cluster are accompanied by the generation of ultrarelativistic fireballs and shock waves. These repeating fireballs result in a formation of the expanding rarefied cavity inside the envelope. The charged particles are effectively accelerated in the cavity and, due to pp-collisions in the gas envelope, they produce high energy neutrinos. All high energy particles, except neutrinos, are absorbed in the thick envelope. Duration of this pre-AGN phase is ∼ 10 yr, the number of the sources can be ∼ 10 per cosmological horizon. High energy neutrino signal can be detected by underground neutrino telescope with effective area S ∼ 1 km 2 .

show abstract

“…The corresponding rate of NS collisions in the cluster (with the gravitational radiation losses taken into account) is [14]- [16] N c = 9…”

Section: Fireballs In Clustermentioning

confidence: 99%

Hidden source of high-energy neutrinos in collapsing galactic nucleus

Berezinsky

2001

Astroparticle Physics

View full text Add to dashboard Cite

show abstract

“…There is a much higher possibility that the not yet identiÐed host of a GRB may be an AGN/QSO with very high metallicity. Recently, Dokuchaev, Eroshenko, & Ozernoy (1998) proposed the possibility that GRBs originate from the evolved galactic nuclei. In their model GRBs result from the coalescence of the compact object binaries which are formed because of the dynamical evolution of the cluster and the dissipation of gravitational radiation.…”

Section: Coalescence Of the (Ns/bh Ns/bh) And (Bh Hc) Binariesmentioning

confidence: 99%

The Formation and Merger of Compact Objects in the Central Engine of Active Galactic Nuclei and Quasars: Gamma‐Ray Burst and Gravitational Radiation

Cheng

Wang

1999

ApJ

View full text Add to dashboard Cite

The production rate of compact objects, i.e., neutron stars (NSs) and black holes (BHs), in active galactic nuclei (AGNs) and quasars (QSOs), where frequent supernova explosions are used to explain the high metallicity, is very high because of the interaction between the accretion disk and main-sequence stars in the nucleus of the quasar. The compact object red giant (RG) star binaries can be easily formed because of the large captured cross section of the RG stars. The (NS/BH, NS/BH) binary can be formed after the supernova explosion of the (NS/BH, RG) binary. Intense transient gamma-ray emission (gamma-ray burst) and gravitational radiation can result from the merger of these two compact objects. Collision between the helium core (Hc) of the RG and the BH may also take place and may also result in long-duration gamma-ray bursts but no gravitational waves. We estimate that the merger rate of (NS/BH, NS/BH) binaries and (Hc, BH) is proportional to the metal abundance N V/C IV and can be as high as 10~3 [(N V/C IV)/0.01] yr~1 per AGN/QSO.

show abstract

“…In our previous work [1], we have considered the generation of GRBs due to the radiative collisions of CSRs (for simplicity, taken to be solely NSs) in the central stellar clusters of evolved galactic nuclei. Depending on its initial radius and mass, the characteristic dynamical evolution time of a cluster, t e , can either exceed the age of the Universe, t 0 , (we call such clusters as 'slowly evolving clusters' hereinafter) or be less than t 0 ('fast evolving clusters').…”

Section: Introductionmentioning

confidence: 99%

“…A galactic nucleus with the gravitationally dominating SMBH of mass M h > M might belong to slowly evolving galactic nuclei as well. The corresponding GRB rate from such a nucleus is given by [1]…”

Section: Introductionmentioning

confidence: 99%

GRB redshift distribution is consistent with GRB origin in evolved galactic nuclei

Dokuchaev¹,

Eroshenko²,

Ozernoy³

1999

The 9th Astrophysics Conference: After the Dark Ages, When Galaxies Were Young (The Universe at 2Self Cite

0
0
0
0

View full text Add to dashboard Cite

Abstract.Recently we have elaborated a new cosmological model of gamma-ray burst (GRB) origin [1], which employs the dynamical evolution of central dense stellar clusters in the galactic nuclei. Those clusters inevitably contain a large fraction of compact stellar remnants (CSRs), such as neutron stars (NSs) and stellar mass black holes (BHs), and close encounters between them result in radiative captures into shortliving binaries, with subsequent merging of the components thereby producing GRBs, typically at large distances from the nucleus.In the present paper, we calculate the redshift distribution of the rate of GRBs produced by close encounters of NSs in distant galactic nuclei. To this end, the following steps are undertaken: (i) we establish a connection between the parameters of the fast evolving central stellar clusters (i.e. those for which the time of dynamical evolution exceeds the age of the Universe) with masses of the forming central supermassive black holes (SMBHs) using a dynamical evolution model; (ii) we connect these masses with the inferred mass distributions of SMBHs in the galactic nuclei and the redshift distribution of quasars by assuming a certain 'Eddington luminosity phase' in their activity; (iii) we incorporate available observational data on the redshift distribution of quasars as well as a recently found correlation between the masses of galaxies and their central SMBHs. The resulting redshift distribution of the GRB rate, which accounts for both fast and slowly evolving galactic nuclei is consistent with that inferred from the BATSE data if the fraction of fast evolving galactic nuclei is in the range E _-_ 0.016 -0.16.

show abstract

Gamma‐Ray Bursts from Evolved Galactic Nuclei

Cited by 17 publications

References 51 publications

Hidden source of high-energy neutrinos in collapsing galactic nucleus

Hidden source of high-energy neutrinos in collapsing galactic nucleus

The Formation and Merger of Compact Objects in the Central Engine of Active Galactic Nuclei and Quasars: Gamma‐Ray Burst and Gravitational Radiation

GRB redshift distribution is consistent with GRB origin in evolved galactic nuclei

Contact Info

Product

Resources

About