Editor/Author Correspondence

Editor/Author Correspondence Section Subject: [RAA] MS 1806: Decision on your article for Research in Editor Astronomy and Astrophysics 2014-05-05 Ref: RAA/MS 1806 05:09 PM Dear Dr. Gabriela Raluca Mocanu,

MS #: 1806 Title: New statistical results on the optical IDV data of BL Lac S5 0716+714 Author(s): Bogdan Danila, Alexandru Marcu, Gabriela Raluca Mocanu

Please find the referee’s report on your above submission to Research in Astronomy and Astrophysics. Sincerely,

Prof. Tinggui Wang University of Science & Technology of China, Hefei Phone 0551-3607503 Section Subject: [RAA] MS 1806: Decision on your article for Research in Editor Astronomy and Astrophysics 2014-05-05 Ref: RAA/MS 1806 05:11 PM Dear Dr. Gabriela Raluca Mocanu, MS #: 1806 Title: New statistical results on the optical IDV data of BL Lac S5 0716+714 Author(s): Bogdan Danila, Alexandru Marcu, Gabriela Raluca Mocanu

Please find the referee’s report on your above submission to Research in Astronomy and Astrophysics.

Prof. Tinggui Wang ------Reviewer A:

I have reviewed the manuscript "New statistical results on the optical IDV data of the BL Lac S5 0716+714" by Danila et al. In the manuscript authors have taken a few optical intra-day variability light curves data from the published literature and tried to show if the magnitude is log-normally distributed. They also claim to calculate spectral slope of the light curves. The paper is poorly written with few basic mistakes, so, it needs to be revised properly before we consider it for publication.

Major Comments:

1. Authors should understand this source is a strong BL Lac candidate with featureless optical continuum in its optical spectra and any emission in any EM band is the jet emission. Authors have discussed in section 1.1 about reprocessing of disc which should be removed. 2. Location of emission which will be the size of emitting region = c * \delta t and redshift factor should be also included.

3. Authors should understand blazar variability is very irregular and selecting a few light curves from published about 1000 light curves will be a biased result.

4. I could not understand how authors have calculated spectral slope with single optical band light curve? Please explain it clearly. 5. Appendix 1 is very basic and everyone doing astrophysics knows it. So, there is no need to write it in the manuscript. Section Subject: [RAA] MS 1806: Your article has been accepted for Editor Research in Astronomy and Astrophysics 2014-06-14 Ref: RAA/MS 1806 04:48 PM Dear Gabriela Raluca Mocanu, MS #:1806 Title: New statistical results on the optical IDV data of BL Lac S5 0716+714 Author(s): Bogdan Danila, Alexandru Marcu, Gabriela Raluca Mocanu

We are pleased to inform you that the above article has been accepted for publication in Research in Astronomy and Astrophysics. Sincerely Yours,

Prof. Tinggui WangScientific Edito ___