منابع مشابه
Estimating the Number of Wideband Radio Sources
In this paper, a new approach for estimating the number of wideband sources is proposed which is based on RSS or ISM algorithms. Numerical results show that the MDL-based and EIT-based proposed algorithm havea much better detection performance than that in EGM and AIC cases for small differences between the incident angles of sources. In addition, for similar conditions, RSS algorithm offers hi...
متن کاملYoung Extragalactic Radio Sources
Gigahertz Peaked Spectrum (GPS) sources and Compact Symmetric Objects (CSO) are selected in very different ways, but have a significant overlap in properties. Ever since their discovery it has been speculated that they are young objects, but only recently, strong evidence has been provided indicating that GPS sources and CSOs are indeed the young counterparts of large, extended sources. They ar...
متن کاملGiant radio sources
We present multi-frequency VLA observations of two giant quasars, 0437−244 and 1025−229, from the Molonglo Complete Sample. These sources have well-defined FRII radio structure, possible one-sided jets, no significant depolarization between 1365 and 4935 MHz and low rotation measure (| RM | < 20 rad m −2). The giant sources are defined to be those whose overall projected size is ≥ 1 Mpc. We hav...
متن کاملestimating the number of wideband radio sources
in this paper, a new approach for estimating the number of wideband sources is proposed which is based on rss or ism algorithms. numerical results show that the mdl-based and eit-based proposed algorithm havea much better detection performance than that in egm and aic cases for small differences between the incident angles of sources. in addition, for similar conditions, rss algorithm offers hi...
متن کاملRadio Frequency Interference Mitigation for Detection of Extended Sources with an Interferometer
Radio frequency interference (RFI) is a significant problem for current and future radio telescopes. We describe here a method for post-correlation cancellation of RFI for the special case of an extended source observed with an interferometer that spatially resolves the astronomical signal. In this circumstance, the astronomical signal is detected through the auto-correlations of each antenna b...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1981
ISSN: 0074-1809
DOI: 10.1017/s0074180900074490