Course : Εισαγωγή στη Ραδιοστρονομία
Course code : PH338C
-
Display all units
-
Introduction: What is radio astronomy
-
Radiation mechanisms in the radio window
-
Propagation through plasmas and the interstellar medium
-
Antennas, beams, and single-dish observing
-
Receivers, backends, digitization, and RFI
-
Spectral-line radio astronomy
-
Polarization and magnetic fields
-
Pulsars and pulsar timing
-
Transients, FRBs, surveys, and time-domain radio astronomy
-
Interferometry I: the fundamental idea
-
Interferometry II: calibration and imaging
-
VLBI, astrometry, geodesy, and extreme angular resolution
-
High-frequency radio astronomy: ALMA, sub-mm astronomy, and the EHT
-
SETI, technosignatures, future facilities
-
Introduction: What is radio astronomy
Receivers, backends, digitization, and RFI
Lecture topics
Heterodyne receivers, mixers, local oscillators, bandwidth, sampling, quantization, polyphase filterbanks, spectrometers, pulsar backends, baseband recording. RFI detection and mitigation. Practical observing system architecture.
Key concepts
Nyquist sampling, bandwidth, channelization, dynamic range, ADC bits, data rates, RFI excision.