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Ashley's comments are all fine. I'll add that homogenisation just means that where you have results from different instruments at the same frequency, they have been averaged in some way. The reference code refers to something like this 1995MNRAS.273..559J That can be used to look up the paper referred to at somewhere like the NASA ADS catalogue. Can you ...


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Take for instance radio, when listening to radio you gather static on the frequency. A passband filters the static which in turn provides a clearer signal. Objects radiate in multiple frequencies/wavelengths, for instance heat/thermal (infrared) and visible. Not all object radiate in a range of frequencies, humans for example can be seen well in infrared and ...


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Radio telescopes are frequently used to observe the births of stars and their planetary systems. The longer wavelengths are able to penetrate from beneath the envelope of gas and dust that shrouds any attempts to view these events at optical or infrared wavelengths. Unfortunately, the smallest angular resolution of a telescope goes as $\lambda/D$, where $D$ ...


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Some radio telescopes have been used to observe young stars and protoplanetary disks, if that counts. Atacama Large Millimeter Array (ALMA): Though it's used for a variety of things, ALMA was used in late 2014 to observe a young star, HL Tau. Among the data gathered was information about HL Tau's circumstellar disk. It found a series of gaps in the disk. ...



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