NOAO > Observing Info > Approved Programs > 2009A-0063
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NOAO > Observing Info > Approved Programs > 2009A-0063 |
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PI: Pheneas Nkundabakura, University of the Free State, nkundapheneas@yahoo.fr
Address: Physics Department, P.O. Box 339, Bloemfontein, Free State 9300, South Africa
CoI: Pieter Meintjes, University of the Free State
Title: Identification for possible high energy blazars among the unidentified EGRET objects: detemination of the redshift of 3EG 0706-3837 and 3EG J0821-5814 using the Goodman SOAR Spectrograph
Abstract:
EGRET on board the Compton Gamma-Ray Observatory detected 271 high
energy gamma-ray sources above 100 MeV [1], presumably not associated
with our galaxy that may be AGNs. The poor spatial resolution of EGRET
relies on the observational photometric and spectroscopic identification
of AGNs and Blazars (FSRQs and BL Lac objects) that may be responsible
for high energy emission. Out of the 271 EGRET-detected objects, about
130 remain unidentified. Based on their similarities with BL lacs in
their broad band multi-wavelength properties, 13 sources were selected
among the unidentified EGRET population for further study. The first
part of this project aims to identify the nature and variability of
these selected objects (presumably blazars) through multi-wavelength
observations while the second part will have to model their multi-
wavelength emission from jets and accretion discs. The present
observing proposal aims to determine the redshift and investigate on the
optical emission lines of the 2 of selected sources, which are
observable during the running period 2009A.
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360
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NOAO > Observing Info > Approved Programs > 2009A-0063 |
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