Optical and Near-Infrared Monitoring of Gamma-ray Binaries Hosting Be Stars
| Autor: | Yuki Moritani, Akiko Kawachi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
circumstellar disk
media_common.quotation_subject Astrophysics::High Energy Astrophysical Phenomena General Physics and Astronomy FOS: Physical sciences gamma-ray binaries Astrophysics QC793-793.5 Astrophysics::Cosmology and Extragalactic Astrophysics Compact star gamma-ray binaries—individual (PSR B1259−63 LSI+61 303 HESS J0632+057) Observatory Be stars Tidal force Eccentricity (behavior) Astrophysics::Galaxy Astrophysics Solar and Stellar Astrophysics (astro-ph.SR) media_common Physics High Energy Astrophysical Phenomena (astro-ph.HE) Linear polarization Astrophysics::Instrumentation and Methods for Astrophysics Elementary particle physics Stars Photometry (astronomy) Orbit Astrophysics - Solar and Stellar Astrophysics gamma-ray binaries—individual (PSR B1259-63 LSI+61 303 HESS J0632+057) optical and near-infrared Astrophysics::Earth and Planetary Astrophysics Astrophysics - High Energy Astrophysical Phenomena |
| Zdroj: | Universe, Vol 7, Iss 320, p 320 (2021) Universe Volume 7 Issue 9 |
| DOI: | 10.48550/arxiv.2109.00975 |
| Popis: | Optical and near-infrared observations are compiled for the three gamma-ray binaries hosting Be stars: PSR B1259-63, LSI+61 303, and HESS J0632+057. The emissions from the Be disk are considered to vary according to the changes in its structure, some of which are caused by interactions with the compact object (e.g., tidal forces). Due to the high eccentricity and large orbit of these systems, the interactions -- and, hence the resultant observables -- depend on the orbital phase. To explore such variations, multi-band photometry and linear polarization were monitored for the three considered systems, using two 1.5 m-class telescopes: IRSF at the South African Astronomical Observatory and Kanata at the Higashi-Hiroshima Observatory. Comment: accepted to Universe |
| Databáze: | OpenAIRE |
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