New two-colour light curves of Q0957+561: time delays and origin of intrinsic variations (A&A)   

Structure function of the UV variability of Q0957+561 (A&A)    

●  Press Release: Mystery Of Twin Quasar Brightness Revealed

● The Astronomer's Telegram: An opportunity for a multi-wavelength follow-up of a prominent event in the brightness of Q0957+561B in the first semester of 2010

● Time evolution of Q0957+561B in the ugriz filters in 2010 (Swift/UVOT + LRT)                                                      

Accretion onto the Supermassive Black Hole in the High-redshift Radio-loud AGN 0957+561 (ApJ)

[Time (MJD-50000), S_A (mJy), s(S_A), S_B (mJy), s(S_B)]:

- UV (U band)

- optical (g band & r band)

- IR (i band & z band)

 A 5.5-year robotic optical monitoring of Q0957+561: substructure in a non-local cD galaxy (A&A)

● Global dataset:

- ReadMe

- Table 1: Fluxes in the g band (4686 Å)

- Table 2: Fluxes in the r band (6165 Å)

- On the time delays from the Liverpool main fluctuations:

resampled g-band light curves (45 data points): Q0957+561A and Q0957+561B

A(+ 417 days) & B [left panel], as well as AB cross-correlation (filled circles) & average autocorrelation (+ 417 days; open circles) for α = 6 days [middle panel] and a = 9 days [right panel]:

resampled r-band light curves (45 data points): Q0957+561A and Q0957+561B

A(+ 417 days) & B [left panel], as well as AB cross-correlation (filled circles) & average autocorrelation (+ 417 days; open circles) for α = 6 days [middle panel] and a = 9 days [right panel]:

Spectra of faint sources in crowded fields with FRODOSpec on the Liverpool Robotic Telescope (Astron. Nachr.)

  Polarimetric monitoring with RINGO since 2011

 LT + IAC80 light curves in 1996–2016 (21 years)

A = red circles         B = blue squares

LT light curves in 2005–2014 (10 years): suitable scale factors and time shifts are used to show the agreement/disagreement between A and B

   New database for a sample of optically bright lensed quasars in the northern hemisphere (A&A)

● Datasets:

– Table 6: IAC80-LT light curves in the r band [1067 epochs in 1996-2016]

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Columns
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Col. 1: MJD-50000 (Modified Julian Date - 50000)
Col. 2: mA (Magnitude of QSO B0957+561A)
Col. 3: emA (Error in magnitude of QSO B0957+561A)
Col. 4: mB (Magnitude of QSO B0957+561B)
Col. 5: emB (Error in magnitude of QSO B0957+561B)
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– Table 8: LT/FRODOSpec (red grating) spectra [16 epochs in 2010-2014]

Subtables: 8a, 8b, 8c, 8d, 8e, 8f, 8g, 8h, 8i, 8j, 8k, 8l, 8m, 8n, 8o, 8p

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Columns
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Col. 1: lambda (Observed wavelength in Angstroms)
Col. 2: FA (Flux of QSO B0957+561A in 10^-17 ergs cm^-2 s^-1 Å^-1)
Col. 3: FB (Flux of QSO B0957+561B in 10^-17 ergs cm^-2 s^-1 Å^-1)
Col. 4: FGAL (Flux of the main lensing galaxy in 10^-17 ergs cm^-2 s^-1 Å^-1)
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– Table 9: LT/SPRAT spectra [5 epochs in 2015-2017]

Subtables: 9a, 9b, 9c, 9d, 9e