| And on extragalactic scales, they even expect to study individual stars around black holes. |
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| The number of these sources is consistent with the expected number of extragalactic sources in the background sky. |
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| Operating at a wavelength of 2 centimetres, it was used to study galactic and extragalactic objects that emit radio waves, such as quasars. |
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| If Lorentz invariance were violated, the gamma-rays would pass right through the extragalactic infrared fog with insufficient energy to cause annihilation. |
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| A number of BL Lac objects are known in the vicinity of clusters of galaxies so this provides indirect evidence in support of their extragalactic nature. |
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| In the 1930s and '50s he made estimates of the age of the universe from meteorites and from galactic and extragalactic statistics. |
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| These observations are an important sterp forwards an independent verification of the extragalactic distance scale by interferometry. |
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| The image of the cosmos as seen at VHE is becoming richer with the addition of a new type of extragalactic sources, the radiogalaxies. |
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| Bolton later used it to pinpoint more than 8,000 extragalactic radio sources, including hundreds of quasars. |
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| Given a Milky Way Galaxy system of limited scale, Curtis could argue for and consider plausible the extragalactic nature of the spiral nebulae. |
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| Dr. Fahlman has authored or co-authored approximately 150 scientific articles in many areas of stellar and extragalactic astronomy. |
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| Scientists at DRAO have a wide range of interests, from solar system to extragalactic research. |
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| His research interests include cosmology, extragalactic astronomy, galaxies, and astronomical techniques. |
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| Dr. Fahlman's research interests are in the fields of observational galactic and extragalactic astronomy. |
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| Eventually Mr Fang settled at the University of Arizona to become a professor of physics, as he wanted, specialising in statistical studies of the extragalactic red shift. No red shift was observed in China. |
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| Investigations of the small spatial scale properties of the interstellar medium by measurements of the scattering of images of strong extragalactic sources on micro-arcsec scales. |
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| The H. E. S. S. discovery of this radio galaxy confirms the possibility to detect VHE gamma-rays from extragalactic objects less luminous than blazars. |
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| These filled-aperture radio telescopes are used for atomic and molecular spectroscopy over a wide range of frequency and for other galactic and extragalactic studies. |
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