Gravitational microlensing of gamma-ray blazars

Diego F. Torres; Gustavo E. Romero; Ernesto F. Eiroa; Joachim Wambsganss; Martin Elias Pessah

doi:10.1046/j.1365-8711.2003.06219.x

Gravitational microlensing of gamma-ray blazars

Diego F. Torres, Gustavo E. Romero, Ernesto F. Eiroa, Joachim Wambsganss, Martin Elias Pessah

Niels Bohr Internationale Akademi

13 Citationer (Scopus)

Abstract

We present a detailed study of the effects of gravitational microlensing on compact and distant $\gamma$-ray blazars. These objects have $\gamma$-ray emitting regions which are small enough as to be affected by microlensing effects produced by stars lying in intermediate galaxies. We analyze the temporal evolution of the gamma-ray magnification for sources moving in a caustic pattern field, where the combined effects of thousands of stars are taken into account using a numerical technique. We propose that some of the unidentified $\gamma$-ray sources (particularly some of those lying at high galactic latitude whose gamma-ray statistical properties are very similar to detected $\gamma$-ray blazars) are indeed the result of gravitational lensing magnification of background undetected Active Galactic Nuclei (AGNs).

Originalsprog	Engelsk
Tidsskrift	Monthly Notices of the Royal Astronomical Society
Vol/bind	399
Udgave nummer	2
Sider (fra-til)	335-352
Antal sider	17
ISSN	0035-8711
DOI	https://doi.org/10.1046/j.1365-8711.2003.06219.x
Status	Udgivet - 12 feb. 2003

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10.1046/j.1365-8711.2003.06219.x

Citationsformater

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keywords = "astro-ph, gr-qc",

author = "{F. Torres}, Diego and {E. Romero}, Gustavo and {F. Eiroa}, Ernesto and Joachim Wambsganss and Pessah, {Martin Elias}",

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T1 - Gravitational microlensing of gamma-ray blazars

AU - F. Torres, Diego

AU - E. Romero, Gustavo

AU - F. Eiroa, Ernesto

AU - Wambsganss, Joachim

AU - Pessah, Martin Elias

PY - 2003/2/12

Y1 - 2003/2/12

N2 - We present a detailed study of the effects of gravitational microlensing on compact and distant $\gamma$-ray blazars. These objects have $\gamma$-ray emitting regions which are small enough as to be affected by microlensing effects produced by stars lying in intermediate galaxies. We analyze the temporal evolution of the gamma-ray magnification for sources moving in a caustic pattern field, where the combined effects of thousands of stars are taken into account using a numerical technique. We propose that some of the unidentified $\gamma$-ray sources (particularly some of those lying at high galactic latitude whose gamma-ray statistical properties are very similar to detected $\gamma$-ray blazars) are indeed the result of gravitational lensing magnification of background undetected Active Galactic Nuclei (AGNs).

AB - We present a detailed study of the effects of gravitational microlensing on compact and distant $\gamma$-ray blazars. These objects have $\gamma$-ray emitting regions which are small enough as to be affected by microlensing effects produced by stars lying in intermediate galaxies. We analyze the temporal evolution of the gamma-ray magnification for sources moving in a caustic pattern field, where the combined effects of thousands of stars are taken into account using a numerical technique. We propose that some of the unidentified $\gamma$-ray sources (particularly some of those lying at high galactic latitude whose gamma-ray statistical properties are very similar to detected $\gamma$-ray blazars) are indeed the result of gravitational lensing magnification of background undetected Active Galactic Nuclei (AGNs).

KW - astro-ph

KW - gr-qc

U2 - 10.1046/j.1365-8711.2003.06219.x

DO - 10.1046/j.1365-8711.2003.06219.x

M3 - Journal article

SN - 0035-8711

VL - 399

SP - 335

EP - 352

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

IS - 2

ER -

Gravitational microlensing of gamma-ray blazars

Abstract

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