VSOP observations of the compact BL Lacertae object 1803+784 |
| |
| Institution: | 1. Department of Health Outcomes and Behavior, Moffitt Cancer Center, Tampa, Florida;2. Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, Florida;3. School of Aging Studies, University of South Florida, Tampa, Florida;4. Division of Hematology/Oncology, Department of Medicine, University of North Carolina, Chapel Hill, North Carolina;5. Departments of Psychiatry and Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin;6. Blood and Marrow Transplant Program, Cleveland Clinic, Cleveland, Ohio;7. Clinical Research Division, Fred Hutchison Cancer Research Center, Seattle, Washington;1. Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Korea;2. Radio Technology Research Division, Electronic Telecommunications Research Institute (ETRI), Daejeon, 34129, Korea;1. Division of Pediatric Surgery, DeWitt-Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA;2. South Florida Pediatric Surgeons P.A., Plantation, FL, USA |
| |
| Abstract: | Very Long Baseline Interferometry polarisation observations provide information about the magnetic-field structure of the parsec-scale jets in active galactic nuclei. 5-GHz VLBI polarisation observations of the compact BL Lacertae object 1803+784 were obtained in July 1998 with a global ground array plus the orbiting HALCA (VSOP) antenna. The extra resolution provided by baselines to the orbiting antenna has revealed a smoothly bent jet structure in 1803+784, with the magnetic field transverse all along the jet. This may indicate the presence of relativistic shocks, or possibly of a helical magnetic field surrounding the VLBI jet. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
