1

Constraining the time variation of the fine structure constant

Raghunathan Srianand, Patrick Petitjean, Hum Chand and Bastien Aracil

ESO June (2004)

2

Probing the cosmological variation of the fine-structure constant: results based on VLT-UVES sample

H.Chand, R. Srianand, P. Petitjean and B. Aracil

Astronomy & Astrophysics, 417,853-871(2004)

3

Limits on the time variation of the electromagnetic fine-structure Constant in the low energy limit from absorption lines in the spectra of distant quasars

R.Srianand, H.Chand, P.Petitjean and B. Aracil

Physical Review Letters Vol 92, No.12 26 March 2004

4

Time dependence of the proton-to-electron mass ratio

P.Petitjean, A. Ivanchik, Raghunathan Srianand, B.Aracil, D.Varshalovich, H.Chand, Esther Rodriguez, C.Ledoux Patrick Boisssé

C.R. Physique 5 (2004) 411-415

5

Probing the time-variation of the fine-structure constant:Results based on Si IV doublets from a UVES sample

H.Chand, P. Petitjean, R. Srianand and B Aracil

Astronomy & Astrophysics, 430, 47-58 (2005)

6

The density structure around quasars from optical depth statistics

Emmanuel Rollinde, Raghunathan Srianand, Tom Theuns, Patrick Petitjean and Hum Chand

Mon. Not. R. Astron. Soc. 361, 1015-1029 (2005)

7

A new constraint on the time dependence of the proton-to-electron mass ratio Analysis of the Q 0347-383 an Q 0405-443 spectra

A.Ivanchik, P. Petitjean, D. Varshalovich, B. Aracil, R.Srianand, H.Chand, C.Ledoux, and P. Boisse

Astronomy & Astrophysics (2005) Accepted

8

The VLT-UVES survey for molecular hydrogen in high-redshift damped Lyman systems: physical conditions in the neutral gas

Raghunanthan Srianand, Patrick Petitjean, Cedric Ledoux, Gary Ferland and Gargi Shaw

Mon. Not. Astron. Soc . (2005) Accepted

9

Kinematics and star formation activity in the zabs=2.03954 damped Lyman-ásystem towards PKS 0458-020*

J.Heinmüller, P. Petitjean, C. Ledoux, S. Caucci, and R. Srianand

Astronomy & Astrophysics 449, 33-39(2006)

10

Variation of the fine-structure constant: very high resolution spectrum of QSO HE 0515-4414*

H. Chand, R. Srianand, P. Petitjean, B. Aracil, R. Quast, and D. Reimers

A&A 451, 45-56(2006)

11

Relative abundance pattern along the profile of high redshift damped lyman-á systems*

E. Rodríguuez, P Petitjean, B. Aracil, C.Ledoux, and R. Srianand

A&A 446, 791-804(2006)

12

Molecular hydrogen in a damped Lãá system at Zabs=4.224

C. Ledoux, P. Petitjean, and R. Srianand

The Astronomical Journal 640:L25-L-28, 2006 March 20