Dr. Maria Dainotti
Stanford University, USA
A new intrinsic 3 parameter correlation in Gamma Ray Bursts

An analysis of 176 GRBs with known redshift observed by Swift which present afterglow plateau revealed a new tri-parameter correlation (Lpeak,Lx,T*a) where Lpeak is the peak luminosity in the prompt emission, Lx is the luminosity at the end of the plateau emission and T*a is the rest frame time at the end of the plateau emission. We have already proven the intrinsic nature of the Lx- T*a (Dainotti et al. 2013a) and the Lpeak-Lx correlation (Dainotti et al. 2015b) through the Efron & Petrosian (1992) method. We here show the intrinsic slope of this new correlation whose intrinsic scatter is 10% less than the one for the Lx-T*a correlation, therefore this new relation can be more useful as a cosmological tool. In addition, we show how the separation between categories of GRB-SNe, X-ray Flashes and short GRBs with extended emission are displayed in the 3D space. It is advisable to divide the categories before using this correlation for cosmological study. Finally, we also present the Lpeak-T*90 correlation, where T90 is the time where the 90% of the prompt emission is emitted between 5% and 95%. This correlation is weaker than the Lpeak-T*a one, thus favoring the choice of T*a as a preferred time as a third parameter in the 3D mentioned correlation.


Maria Giovanna Dainotti completed her undergraduate studies in Italy in Salerno University in 2005, and her graduated studies in Rome La Sapienza University in 2008 obtaining a PhD in relativistic astrophysics. She worked as a research assistant at the Jagiellonian University in Krakow (UJ) in Poland, in La Normale of Pisa, Italy, as Loreal Italia postdoctoral fellow, in the research center in Riken in Tokyo, she has been Fulbright at Stanford University in 2012-2013 she is currently an assistant professor in Krakow and she is Marie Curie Fellow at Stanford University.

She has been visiting scientist in Stanford University (USA), at Harvard University (USA), at Leicester University, in Bologna IAF-INAF (Italy), at UNAM University in Mexico City (Mexico) and in Naples University.

She is currently peer reviewer of Monthly Notice of the Royal Astronomical Society (MNRAS) and the Astrophysical Journal (ApJ). She served as reviewer for NASA missions since 2013 and the Icelandic Research Institute recently.

She has been awarded for the scientific achievement of her career the title of Knight of the Italian Republic in March 2013.

Her main interests are Gamma Ray Bursts. In particular, she studies Gamma Ray Bursts correlations, their application as cosmological tools and the statistical methods to overcome selection bias. Recently, she has been working on statistical techniques for the inference of redshift for GRBs for which the distance is unknown.

Dr. Dainotti has been involved in high-z GUNDAM mission since 2014 and recently in Theseus mission.

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