The sequence of events that led to the 1963 publications in <i>Nature</i> of 3C273, the first quasar and the first extragalactic radio jet

Hazard, C.; Jauncey, D. L.; Goss, W. M.; Herald, D.

doi:10.1017/s1743921315002173

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…Thus, almost the whole of modern extragalactic astronomy was founded in just 5 pages! Cyril Hazard [12] has recently reviewed the sequence of events leading to the discovery.…”

Section: Double Lobed Radio Sourcesmentioning

confidence: 99%

An Old Fogey’s History of Radio Jets

Spencer

2017

Galaxies

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This paper describes a personal view of the discovery of radio jets in celestial radio sources. The existence of narrow, collimated optical features in distant objects has been known about since the early 20th century; however, the advent of radio astronomy in the 1940s and 1950s revealed the existence of a large number of discrete radio sources. The realization that many of these objects were not primarily stellar or local to our own galaxy, but rather extragalactic, followed the determination of accurate radio positions, enabling identifications with optical objects. High-resolution radio interferometers found that they were often compact, and with a double lobed structure, implying outflow from a central object. Shortly afterwards, accurate techniques for the measurement of polarization were developed. However it was not until the advent of synthesis instruments in the 1970s that radio images of the sources were produced, and the existence of radio jets firmly established and their polarization characteristics found.

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“…Thus, almost the whole of modern extragalactic astronomy was founded in just 5 pages! Cyril Hazard [12] has recently reviewed the sequence of events leading to the discovery.…”

Section: Double Lobed Radio Sourcesmentioning

confidence: 99%

An Old Fogey’s History of Radio Jets

Spencer

2017

Galaxies

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“…Many of these letters have survived and remain accessible through archives and collections available today, and a number are reproduced here. This is a more complete version of our earlier published account (Hazard et al, 2015) and now includes additional information recently uncovered from such archival sources. These sources include the National Archives of Australia, the University of Sydney Archives, the CSIRO Archives, as well as Cyril Hazard's personal papers.…”

Section: Introductionmentioning

confidence: 99%

The Sequence of Events that led to the 1963 Publications in Nature of 3C 273, the First Quasar and the First Extragalactic Radio Jet

Hazard

Jauncey²,

Goss³

et al. 2018

Publ. Astron. Soc. Aust.

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The Method of Observation in Science Education: Characteristic Dimensions from an Educational Perspective

Kraus

2023

Sci & Educ

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Observation is widely regarded as a fundamental way of studying nature. However, due to its complexity, proposing a comprehensive characterization is challenging. Observation is a method of studying nature that can be divided into several dimensions. Each of these dimensions can be presented as a pair of terms, which are elaborated in this paper based on the epistemological, philosophical, and educational literature. In addition, the dimensions can be assigned to two levels, which can be used to group the individual dimensions. This epistemological perspective on the method is enriched by historical examples from different periods in physics and astronomy to substantiate and illustrate the classifications. The aim of the paper is to provide an overview of the epistemological features of the method in terms of these dimensions, which may be helpful for discussions in teacher training courses.

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The sequence of events that led to the 1963 publications in Nature of 3C273, the first quasar and the first extragalactic radio jet

Abstract: We have undertaken a detailed investigation, based on the available evidence, of the sequence of events that led to the historical discovery of the first quasar, 3C 273.

Cited by 4 publications

References 13 publications

An Old Fogey’s History of Radio Jets

An Old Fogey’s History of Radio Jets

The Sequence of Events that led to the 1963 Publications in Nature of 3C 273, the First Quasar and the First Extragalactic Radio Jet

The Method of Observation in Science Education: Characteristic Dimensions from an Educational Perspective

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