Polish Ministry of Science and Education

February 2011 – May 2012, PI of the Ministry of Science and Higher Education Polish Grant, Krakow, Poland:

This grant is to support additional salary, travel to conferences and support for publications.

Responsibilities:
Conduct a research project from the titles “Studying the Dainotti relation in Gamma Ray Burst afterglows” and “Using the Dainotti relation in Gamma Ray Burst afterglow as a viable cosmological tool”. Teach 3 courses per year at Jagiellonian University (120 hours of frontal lesson per year) and supervise summer and master students. Details of the courses and mentoring are presented in the Teaching/Supervising section.

Key achievements:

  • The study of a possible existence of a cocoon dominated by cosmic rays with a decreased thermal gas emissivity along M87 jet boundaries (Dainotti et al. 2012). The detailed analysis of Chandra X-ray data, obtained by merging 42 separate observations, shows signatures of lower emissivity surrounding the jet.
  • The study of selection bias related to the choice of the canonical lightcurves (Dainotti et al. 2011a). In the same paper, Dainotti et al. (2011a) attempted to use this subsample as a redshift estimator, which gives encouraging results only if La- Ta intrinsic scatter will be reduced to σint=0.20. Therefore, a larger number of GRBs with well-defined properties is needed together with an effective strategy to reduce the intrinsic scatter of the correlation to draw a definite conclusion.
  • The analysis performed by studying physical parameters for both the prompt and afterglow phases have led to the determination of new significant relations between the afterglow luminosity, La, and the mean luminosities of the prompt emission, Lγ(T)=Eiso/T, (Eiso is the isotropic radiated energy in the prompt emission) computed at different time scales, T (Dainotti et al. 2011b). Dainotti et al. (2011b) found that the highest correlated subsample in the afterglow leads also to the highest prompt–afterglow relations.