摘要:

Particle astrophysics emerged in the 1980s as a new field at the junction of high‐energy astrophysics, cosmology and particle physics. This new experimental, observational and theoretical discipline concerns itself, for example, with the nature of dark matter; the detection of neutrinos from the Sun and from supernovae; the evidence for powerful acceleration mechanisms in the vicinity of neutron stars; and the suggestion that quantum fluctuation and topological singularities in the first moments of the cosmos played a role in the formation of the great structures we see today stretching over hundreds of millions of light‐years.

ISSN:0031-9228    

DOI:10.1063/1.881288

出版商:AIP    

年代:1991

数据来源: AIP

摘要:

Nearly everything we know about the cosmos comes from studying celestial electromagnetic radiation over roughly 16 decades of wavelength from radio to gamma ray. But most radiation is totally absorbed by our atmosphere—only radio and optical waves penetrate to Earth, and even these are subject to distortion or interference. The ability of space astronomy to escape the effects of Earth's atmosphere has literally opened new windows on the heavens, windows through which we have glimpsed a universe far more diverse than previously known and tantalizingly rich with information about its structure and evolution.

ISSN:0031-9228    

DOI:10.1063/1.881306

出版商:AIP    

年代:1991

数据来源: AIP

摘要:

Astronomy is an observational science, not an experimental one. As a result, theory plays a particularly important role in the field. It provides the basic paradigms within which observations are framed and without which they degenerate into catalogs of uninterpreted data. At its most satisfying, theory makes predictions that are later verified by observation. But theory can also have a dramatic “postdictive” impact by explaining previously observed phenomena. It can catalyze specific new observations, which in turn stimulate models. Finally, theory provides much of the conceptual stimulation that invests astronomy with excitement.

ISSN:0031-9228    

DOI:10.1063/1.881298

出版商:AIP    

年代:1991

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2810069

出版商:AIP    

年代:1991

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2810070

出版商:AIP    

年代:1991

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2810071

出版商:AIP    

年代:1991

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2810072

出版商:AIP    

年代:1991

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2810073

出版商:AIP    

年代:1991

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2810074

出版商:AIP    

年代:1991

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2810075

出版商:AIP    

年代:1991

数据来源: AIP