NSF Org:	AST Division Of Astronomical Sciences
Recipient:	REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE
Initial Amendment Date:	June 14, 1999
Latest Amendment Date:	August 19, 2004
Award Number:	9820662
Award Instrument:	Continuing Grant
Program Manager:	Randy Phelps rphelps@nsf.gov  (703)292-5049 AST  Division Of Astronomical Sciences MPS  Directorate for Mathematical and Physical Sciences
Start Date:	July 1, 1999
End Date:	June 30, 2005 (Estimated)
Total Intended Award Amount:	$203,000.00
Total Awarded Amount to Date:	$208,000.00
Funds Obligated to Date:	FY 1999 = $65,000.00 FY 2000 = $73,000.00 FY 2001 = $70,000.00
History of Investigator:	Donald Backer (Principal Investigator) sibani@berkeley.edu
Recipient Sponsored Research Office:	University of California-Berkeley 1608 4TH ST STE 201 BERKELEY CA  US  94710-1749 (510)643-3891
Sponsor Congressional District:	12
Primary Place of Performance:	University of California-Berkeley 1608 4TH ST STE 201 BERKELEY CA  US  94710-1749
Primary Place of Performance Congressional District:	12
Unique Entity Identifier (UEI):	GS3YEVSS12N6
Parent UEI:
NSF Program(s):	GALACTIC ASTRONOMY PROGRAM
Primary Program Source:	app-0100  01000102DB NSF RESEARCH & RELATED ACTIVIT app-0199
Program Reference Code(s):	0000, 1207, 9178, 9251, OTHR, SMET
Program Element Code(s):	121600
Award Agency Code:	4900
Fund Agency Code:	4900
Assistance Listing Number(s):	47.049

ABSTRACT

Backer, Donald
University of California, Berkeley
AST 98-20662

Dr. Backer will carry out studies of Sgr A* and the Crab nebula and pulsar using a variety of radio telescopes and instrumentation. The studies are unified by the theme of high energy plasma astrophysics and the common technique of using distortions in the interstellar medium as probes of the nature of the object. Studies of the radio source at the galactic center, Sgr A* will include imaging, investigations of the nature of its temporal variability, and the use of its proper motions in dynamical studies. Studies of the Crab nebula and pulsar rely on interpreting pulsar signals that propagate through the interstellar medium to study issues such as the structure of the magnetic field structure in parts of the Galaxy, and the intrinsic properties of the pulsars themselves.

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