A VLA search for 2-cm continuum radiation from Comet Halley |
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| Institution: | 1. College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China;2. Tianjin Key Laboratory of Intelligent and Green Pharmaceuticals for Traditional Chinese Medicine, Tianjin 301617, China;3. National and Local Joint Innovation Center for Modern Chinese Medicine, Tianjin 300392, China;4. Tianjin Modern Innovative TCM Technology Co., Ltd., Tianjin 300380, China;1. Instituto de Investigación Sanitaria Valdecilla (IDIVAL), Santander, Spain;2. Servicio de Microbiología, Hospital Universitario Marqués de Valdecilla, Santander, Spain;3. CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain;4. Clinical Microbiology and Parasitology Department, Basurto University Hospital, Bilbao, Vizcaya, Spain;5. Biocruces Bizkaia Health Research Institute, Barakaldo, Vizcaya, Spain;6. Photonics Engineering Group, Universidad de Cantabria, Santander, Spain;7. CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, Madrid, Spain;8. Servicio de Enfermedades Infecciosas, Hospital Universitario Marqués de Valdecilla, Santander, Spain;9. Departamento de Medicina y Psiquiatría, Universidad de Cantabria, Santander, Spain |
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| Abstract: | We used the VLA2 to search for continuum emission from icy grains in a halo around Comet Halley in mid November 1985. We found the 3σ upper limit to the 2-cm flux density from the comet to be 1 × 10−4 Jy, which is consistent with the detections at 1.3 and 3.5 mm by W.J. Altenhoff et al. (1986, Astron. Astrophys., in press) only if the emission comes from particles which do not radiate efficiently at centimeter wavelengths. These particles could be slightly dirty submillimeter-sized icy grains or small refractory grains. |
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