Radio Polarization and Spectra of Variable Extragalactic    Objects
{'Code': '03020400', 'Directorate': {'Abbreviation': 'MPS', 'LongName': 'Direct For Mathematical & Physical Scien'}, 'Division': {'Abbreviation': 'AST', 'LongName': 'Division Of Astronomical Sciences'}}
{'SignBlockName': 'Millissa J. Evans', 'PO_EMAI': None, 'PO_PHON': None}
Frequent measurements of the total flux density and linear                      polarization of extragalactic radio sources will be made at a                   frequency of 4.8, 8.0 and 14.5 GHz using the Michigan 26 meter                  radio telescope.  Theoretical models will be developed and fitted               to these data to study the physical conditions in the emitting                  regions and to study the particle energy generation mechanisms.                 These observations will be supplemented by Very Long Baseline                   Interferometry (VLBI) observations in collaboration with other                  researchers.  Observations will also be made at 0.85, 1.4 and 2.7               GHz with the National Radio Astronomy Observatory 91 meter                      telescope to investigate the broad-band characteristics of low-                 frequency variable sources.  Specific objectives of the research                include:  a) to obtain high time-resolution, multifrequency                     polarization and flux density data of isolated outbursts in order               to test detailed theoretical models of the source emitting                      region, b) to develop more sophisticated models of shocks                       propagating in relativistic jet flows which constrain more of                   the physical parameters of the emitting regions, c) to better                   understand the relative importance of intrinsic and extrinsic                   and mechanisms as causes of decimetric variability, and the                     nature of the "intermediate frequency gap" , d) to improve global               models of active galactic nuclei through simultaneous, broad-                   band (Ultraviolet or X-ray through radio wavelengths)                           observations, and e) to obtain morphological information of                     selected sources to test models of the emitting regions.
[{'FirstName': 'Margo', 'LastName': 'Aller', 'PI_MID_INIT': 'F', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Margo F Aller', 'EmailAddress': 'mfa@umich.edu', 'NSF_ID': '000093829', 'StartDate': '01/01/1989', 'EndDate': None, 'RoleCode': 'Co-Principal Investigator'}, {'FirstName': 'Hugh', 'LastName': 'Aller', 'PI_MID_INIT': 'D', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Hugh D Aller', 'EmailAddress': 'haller@umich.edu', 'NSF_ID': '000331689', 'StartDate': '01/01/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}]
{'Name': 'Regents of the University of Michigan - Ann Arbor', 'CityName': 'ANN ARBOR', 'ZipCode': '481091079', 'PhoneNumber': '7347636438', 'StreetAddress': '1109 GEDDES AVE, SUITE 3300', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Michigan', 'StateCode': 'MI', 'CONGRESSDISTRICT': '06', 'CONGRESS_DISTRICT_ORG': 'MI06', 'ORG_UEI_NUM': 'GNJ7BBP73WE9', 'ORG_LGL_BUS_NAME': 'REGENTS OF THE UNIVERSITY OF MICHIGAN', 'ORG_PRNT_UEI_NUM': None}
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[{'Code': '121700', 'Text': 'EXTRAGALACTIC ASTRON & COSMOLO'}, {'Code': '121800', 'Text': 'ADVANCED TECHNOLOGIES & INSTRM'}]
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