2018/09/10 by Natalia Żywucka, A. Goyal, Arti Goyal +10
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Blazar #Galaxy #Gamma ray #Large Magellanic Cloud #Neutrino Physics Research #Physics #Quasar #Radio Astronomy Observations and Technology #Stars #Telescope #astro-ph.GA #astro-ph.HE
paper · pdf · doi:10.3847/1538-4357/aae36d
17 pages, 10 figures, accepted for publication in ApJ
arxiv created 2018/09/10 · openalex publication_date 2018/11/07 · arxiv updated 2018/11/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Abstract We report the identification of blazar candidates behind the Magellanic Clouds. The objects were selected from the Magellanic Quasars Survey (MQS), which targeted the entire Large Magellanic Cloud (LMC) and 70% of the Small Magellanic Cloud (SMC). Among the 758 MQS quasars and 898 of the unidentified (featureless spectra) objects, we identified a sample of 44 blazar candidates, including 27 flat-spectrum radio quasars and 17 BL Lacertae objects, respectively. All the blazar candidates from our sample were identified with respect to their radio, optical, and midinfrared properties. The newly selected blazar candidates possess the long-term, multicolor photometric data from the Optical Gravitational Lensing Experiment, multicolor midinfrared observations, and archival radio data for one frequency at least. In addition, for nine of them, the radio polarization data are available. With such data, these objects can be used to study the physics behind the blazar variability detected in the optical and midinfrared bands, as a tool to investigate magnetic field geometry of the LMC and SMC, and as an exemplary sample of point-like sources most likely detectable in the γ -ray range with the newly emerging Cherenkov Telescope Array.