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Old Q0957+561 data & software: 

Optical Monitoring

HST-STIS Spectra

Simple FORTRAN programs to apply the d2 test (accurate and robust time delay measurements)

 

Postgraduate Course on GL

 

ANGLES SCHOOL POSTER-PDF

 

Workshop 2004

 

WORKSHOP POSTER-PDF

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QSO 0957+561AB

 

●  g-SDSS: QSO 0957+561A & QSO 0957+561B

QSO 0957+561A (including fluxes from some frames with 80 < SNR < 100)

●  r-SDSS: QSO 0957+561A & QSO 0957+561B

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)

Continuum reverberation mapping in a z = 1.41 radio-loud QSO (J. Phys. Conf. Ser.)

Relevant datasets for Q0957+561B in 2010

[Time (MJD-50000), Flux (10-12 erg s-1 cm-2 in X-rays and mJy in UV/optical bands), Error in flux]:

- X-ray (absorbed power-law & unabsorved power-law)

- UV (U band)

- optical (g band & r band)

Q0957+561A and Q0957+561B from NUV to NIR (2010)

[Time (MJD-50000), SA (mJy), s(SA), SB (mJy), s(SB)]:

- 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 )

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

- 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 19962016 (21 years)

A = red circles         B = blue squares

LT light curves in 20052014 (10 years): suitable scale factors and time shifts are used to show the agreement/disagreement between A and B