HR: 1330h
AN: SH43A-04    [Abstracts]
TI: Statistical Study of Shocks and CMEs Associated With Interplanetary Type II Bursts
AU: * Aguilar-Rodriguez, E
EM: ernesto@lepvax.gsfc.nasa.gov
AF: Catholic University of America, 620 Michigan Avenue, Washington,, DC 20064 United States
AU: * Aguilar-Rodriguez, E
EM: ernesto@lepvax.gsfc.nasa.gov
AF: Instituto de Geofisica, UNAM, Ciudad Universitaria, DF 04510 Mexico
AU: Gopalswamy, N
EM: gopals@fugee.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, Code 695, Greenbelt, MD 20771 United States
AU: MacDowall, R
EM: Robert.MacDowall@nasa.gov
AF: NASA Goddard Space Flight Center, Code 695, Greenbelt, MD 20771 United States
AU: Yashiro, S
EM: yashiro@cdaw.gsfc.nasa.gov
AF: Catholic University of America, 620 Michigan Avenue, Washington,, DC 20064 United States
AU: Kaiser, M L
EM: mkaiser@pop600.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, Code 695, Greenbelt, MD 20771 United States
AB: We present a study of some spectral properties associated with interplanetary Type II radio emission. Type II radio bursts are signatures of violent eruptions from the Sun that result in shock waves propagating through the corona and the interplanetary medium. We investigated the relative bandwidth of all the type II bursts observed by the Radio and Plasma Wave Experiment (WAVES) on board the Wind spacecraft from 1997 up to 2003. We obtained three sets of events, based on the frequency domain of occurrence: 109 events in the low frequency domain (30 KHz to 1000 kHz detected by the RAD1 receiver), 216 events in the high frequency domain (1-14 MHz, observed by the RAD2 receiver), and 73 events that spanned both domains (RAD1 and RAD2). We present statistical results for the bandwidth-to-frequency ratio (BFR) in the three subsets as well as a comparision of our results with the Type II solar radio bursts observed by ISEE-3 radio experiment, which is similar to WAVES/RAD1. We analyzed the bandwidth and BFR evolution with the heliocentric distance as well as an analysis of drift rate magnitude of type II radio bursts and its starting frequency. We also present some properties of shocks and coronal mass ejections associated with interplanetary type II bursts. This work is partially supported by NSF/SHINE (ATM 0204588)
DE: 2111 Ejecta, driver gases, and magnetic clouds
DE: 2139 Interplanetary shocks
DE: 7534 Radio emissions
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2005 Joint Assembly