MOOC
The Radio Sky I: Science and Observations
Description
The serendipitous and unexpected discovery of radio emission from celestial objects opened up the possibility of studying a new and exciting view of the universe beyond the visible spectrum. Astronomers have been studying the cosmos in visible light since ancient Greece, but it is only in comparatively modern times that the universe beyond the visible spectrum has become accessible to us.
In this course you will learn about the most important objects that emit in the radio regime, both within and beyond our own galaxy. Covering topics from the birth and death of stars to the detection of Gravitational waves you will learn how radio observations contribute to a richer understanding of the universe we inhabit. This course also introduces the basics of radio detectors and the technologies we use to observe at radio wavelengths.
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Ontological neighbourhood
Instructor
Lectures in this MOOC (41)
Blackbody Emission: Understanding Light ProcessesMOOC: The Radio Sky I: Science and Observations
Delves into how astronomers study celestial objects through emitted light, focusing on different spectra types and their origins, including examples like a light bulb filament and the Sun's spectrum.
Blackbody Emission and Radiation Transport: Part 2MOOC: The Radio Sky I: Science and Observations
Covers blackbody radiation, specific intensity, and the Stefan-Boltzmann Law.
Blackbody Radiation and TransportMOOC: The Radio Sky I: Science and Observations
Explores blackbody radiation, Wien's approximation, Rayleigh-Jeans law, and their implications in astrophysical observations.
Blackbody Emission and Radiation TransportMOOC: The Radio Sky I: Science and Observations
Covers the transport equation for blackbody emission and radiation transport.
Earth's Atmosphere Absorption and Radiation TransportMOOC: The Radio Sky I: Science and Observations
Explores Earth's atmosphere absorption, radiation transport, and climate system processes.
Related concepts (338)
Universe
The universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy. The Big Bang theory is the prevailing cosmological description of the development of the universe. According to this theory, space and time emerged together 13.787billion years ago, and the universe has been expanding ever since the Big Bang. While the spatial size of the entire universe is unknown, it is possible to measure the size of the observable universe, which is approximately 93 billion light-years in diameter at the present day.
Chronology of the universe
The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level. For the purposes of this summary, it is convenient to divide the chronology of the universe since it originated, into five parts.
Age of the universe
In physical cosmology, the age of the universe is the time elapsed since the Big Bang. Astronomers have derived two different measurements of the age of the universe: a measurement based on direct observations of an early state of the universe, which indicate an age of 13.787 billion years as interpreted with the Lambda-CDM concordance model as of 2021; and a measurement based on the observations of the local, modern universe, which suggest a younger age.
Related courses (73)
PHYS-402: Astrophysics V : observational cosmology
Cosmology is the study of the structure and evolution of the universe as a whole. This course describes the principal themes of cosmology, as seen
from the point of view of observations.
PHYS-427: Relativity and cosmology I
Introduce the students to general relativity and its classical tests.
PHYS-428: Relativity and cosmology II
This course is the basic introduction to modern cosmology. It introduces students to the main concepts and formalism of cosmology, the observational status of Hot Big Bang theory
and discusses major
Related publications (1,000)
Tracing the rise of supermassive black holes A panchromatic search for faint, unobscured quasars at z ≥ 6 with COSMOS-Web and other surveys
We report the identification of 64 new candidates of compact galaxies, potentially hosting faint quasars with bolometric luminosities of L-bol = 10(43)-10(46) erg s(-1), residing in the reionization epoch within the redshift range of 6 less than or similar ...
Edp Sciences S A2024CURLING - I. The influence of point-like image approximation on the outcomes of cluster strong lens modelling
Jean-Paul Richard Kneib, Huanyuan Shan, Nan Li
Cluster-scale strong lensing is a powerful tool for exploring the properties of dark matter and constraining cosmological models. However, due to the complex parameter space, pixelized strong lens modelling in galaxy clusters is computationally expensive, ...
Oxford Univ Press2024Euclid preparation XXXVI. Modelling the weak lensing angular power spectrum
Frédéric Courbin, Georges Meylan, Gianluca Castignani, Austin Chandler Peel, Maurizio Martinelli, Yi Wang, Richard Massey, Fabio Finelli, Marcello Farina
This work considers which higher order modeling e ffects on the cosmic shear angular power spectra must be taken into account for Euclid. We identified the relevant terms and quantified their individual and cumulative impact on the cosmological parameter i ...
Edp Sciences S A2024