Bounds on the fine structure constant variability from Fe II absorption lines in QSO spectra
The Single Ion Differential a Measurement (SIDAM) method for measuring. Aalce and its figures of merit are illustrated together with the results produced by means of Fe II absorption lines of QSO intervening systems. The method provides, Deltaalpha/alpha = -0.12 +/- 1.79 ppm (parts-per-million) at z...
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| Published in: | The European physical journal. ST, Special topics Vol. 163; pp. 173 - 189 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
01-10-2008
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| Online Access: | Get full text |
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| Summary: | The Single Ion Differential a Measurement (SIDAM) method for measuring. Aalce and its figures of merit are illustrated together with the results produced by means of Fe II absorption lines of QSO intervening systems. The method provides, Deltaalpha/alpha = -0.12 +/- 1.79 ppm (parts-per-million) at zabs = 1.15 towards HE 0515-4414 and Deltaalpha/alpha = 5.66 +/- 2.67ppm at zabs = 1.84 towards Q 1101-264, which are so far the most accurate measurements for single systems. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
| ISSN: | 1951-6355 1951-6401 |
| DOI: | 10.1140/epjst/e2008-00818-4 |