TY - JOUR
T1 - On the radiating and nonradiating components of scalar, electromagnetic, and weak gravitational sources
AU - Marengo, Edwin A.
AU - Ziolkowski, Richard W.
PY - 1999/10/25
Y1 - 1999/10/25
N2 - We derive a new description of two complementary classes of scalar, vector, or tensor sources, namely, nonradiating (NR) sources and sources that lack a NR part, i.e., “purely radiating” sources. The class of purely radiating sources is shown to be exactly the class of solutions-within the source’s support-of the homogeneous form of the associated partial differential equation relating the sources to their fields; i.e., purely radiating sources are themselves fields. We show that this result is related to the well-known reciprocity principle and establish a new definition of a localized NR source based on that principle. A broad class of physically relevant sources, all of which possess a NR part, is identified. The role of NR sources in absorption of radiation and energy storage is addressed. 1999
AB - We derive a new description of two complementary classes of scalar, vector, or tensor sources, namely, nonradiating (NR) sources and sources that lack a NR part, i.e., “purely radiating” sources. The class of purely radiating sources is shown to be exactly the class of solutions-within the source’s support-of the homogeneous form of the associated partial differential equation relating the sources to their fields; i.e., purely radiating sources are themselves fields. We show that this result is related to the well-known reciprocity principle and establish a new definition of a localized NR source based on that principle. A broad class of physically relevant sources, all of which possess a NR part, is identified. The role of NR sources in absorption of radiation and energy storage is addressed. 1999
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U2 - 10.1103/PhysRevLett.83.3345
DO - 10.1103/PhysRevLett.83.3345
M3 - Article
AN - SCOPUS:0000099584
SN - 0031-9007
VL - 83
SP - 3345
EP - 3349
JO - Physical review letters
JF - Physical review letters
IS - 17
ER -