Optical and Near-Infrared Monitoring of Gamma-ray Binaries Hosting Be Stars
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 comp...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Universe |
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| Online Access: | https://www.mdpi.com/2218-1997/7/9/320 |
| _version_ | 1797517077909602304 |
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| author | Yuki Moritani Akiko Kawachi |
| author_facet | Yuki Moritani Akiko Kawachi |
| author_sort | Yuki Moritani |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T07:09:47Z |
| format | Article |
| id | doaj.art-866c36b473404e96867975c0a43598a4 |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-03-10T07:09:47Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-866c36b473404e96867975c0a43598a42023-11-22T15:32:49ZengMDPI AGUniverse2218-19972021-08-017932010.3390/universe7090320Optical and Near-Infrared Monitoring of Gamma-ray Binaries Hosting Be StarsYuki Moritani0Akiko Kawachi1Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8583, JapanDepartment of Physics, School of Science, Tokai University, 4-1-1 Kita-kaname, Hiratsuka 259-1292, JapanOptical 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.https://www.mdpi.com/2218-1997/7/9/320gamma-ray binariesoptical and near-infraredBe starscircumstellar diskgamma-ray binaries—individual (PSR B1259−63, LSI+61 303, HESS J0632+057) |
| spellingShingle | Yuki Moritani Akiko Kawachi Optical and Near-Infrared Monitoring of Gamma-ray Binaries Hosting Be Stars Universe gamma-ray binaries optical and near-infrared Be stars circumstellar disk gamma-ray binaries—individual (PSR B1259−63, LSI+61 303, HESS J0632+057) |
| title | Optical and Near-Infrared Monitoring of Gamma-ray Binaries Hosting Be Stars |
| title_full | Optical and Near-Infrared Monitoring of Gamma-ray Binaries Hosting Be Stars |
| title_fullStr | Optical and Near-Infrared Monitoring of Gamma-ray Binaries Hosting Be Stars |
| title_full_unstemmed | Optical and Near-Infrared Monitoring of Gamma-ray Binaries Hosting Be Stars |
| title_short | Optical and Near-Infrared Monitoring of Gamma-ray Binaries Hosting Be Stars |
| title_sort | optical and near infrared monitoring of gamma ray binaries hosting be stars |
| topic | gamma-ray binaries optical and near-infrared Be stars circumstellar disk gamma-ray binaries—individual (PSR B1259−63, LSI+61 303, HESS J0632+057) |
| url | https://www.mdpi.com/2218-1997/7/9/320 |
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