Detection of gravitational lenses and measurement of time delays from radiation fluctuations | Zendy

E. F. Borra | Zendy

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Detection of gravitational lenses and measurement of time delays from radiation fluctuations

Author(s) -

E. F. Borra

Publication year - 1997

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/289.3.660

Subject(s) - physics , radiation , gravitational wave , gravitational lens , gravitation , background radiation , gravitational redshift , optics , astrophysics , astronomy , galaxy , redshift

I suggest that measurements of intensity fluctuations caused by classicalwave interactions can be used to find unresolved gravitational lenses anddetermine time delays of essentially arbitrary length among the images formedby a gravitational lens. No interferometry i s needed, the time delays can bemeasured by analyzing the intensity signal alone. The technique works withlensed sources that have constant luminosities and is capable of measuring verylong time delays. I suggest interferometric techniques, capable of measuringtime delays of arbitrary length, that can be used to refine the measurements.Comment: To appear in Monthly Notices Roy. Astr. Soc., Postscript file, 18 double spaced page

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