English

Swifts GRB GRB071010B : outlier of the $\rm E^{src}_{peak} - E_{\gamma}$ and ${\rm E_{iso}-E^{src}_{peak}-t^{src}_{jet}}$ correlations

Cosmology and Nongalactic Astrophysics 2014-11-20 v1

Abstract

We present multi-band results for GRB071010B based on \Swift, \Suzaku, and ground-based optical observations. This burst is an ideal target to evaluate the robustness of the EpeaksrcEiso{\rm E^{src}_{peak}-E_{iso}} and EpeaksrcEγ{\rm E^{src}_{peak}-E_{\gamma}} relations, whose studies have been in stagnation due to the lack of the combined estimation of Epeaksrc\rm E^{src}_{peak} and long term optical monitoring. The joint prompt spectral fitting using \Swift/Burst Alert Telescope and \Suzaku/Wide-band All sky Monitor data yielded the spectral peak energy as Epeaksrc^{src}_{peak} of 86.56.3+6.486.5^{+6.4}_{-6.3} keV and Eiso_{iso} of 2.250.16+0.19×10522.25^{+0.19}_{-0.16}\times10^{52} erg with z=0.947z=0.947. The optical afterglow light curve is well fitted by a simple power law with temporal index α=0.60±0.02\alpha=-0.60\pm0.02. The lower limit of temporal break in the optical light curve is 9.8 days. Our multi-wavelength analysis reveals that GRB071010B follows EpeaksrcEiso{\rm E^{src}_{peak}-E_{iso}} but violates the EpeaksrcEγ{\rm E^{src}_{peak}-E_{\gamma}} and EisoEpeaksrctjetsrc{\rm E_{iso}-E^{src}_{peak}-t^{src}_{jet}} at more than the 3σ\sigma level.

Keywords

Cite

@article{arxiv.0910.5774,
  title  = {Swifts GRB GRB071010B : outlier of the $\rm E^{src}_{peak} - E_{\gamma}$ and ${\rm E_{iso}-E^{src}_{peak}-t^{src}_{jet}}$ correlations},
  author = {Yuji Urata and Kuiyun Huang and Myungshin Im and Induk Lee and Jinsong Deng and Wing-Huen Ip and Hans Krimm and Xin Liping and Masanori Ohno and Yulei Qiu and Satoshi Sugita and Makoto Tashiro and Jianyan Wei and Kazutaka Yamaoka and Weikang Zheng},
  journal= {arXiv preprint arXiv:0910.5774},
  year   = {2014}
}

Comments

15 pages, 5 figures, Accepted for Publication in ApJ Letter