{
  "bibcode": "2012GCN.13639....1M",
  "body": "D. Malesani, T. Kruehler (DARK/NBI), A. de Ugarte Postigo (IAA/CSIC and \nDARK/NBI), D. Xu (WIS), N. R. Tanvir (Univ. Leicester), J. Gorosabel \n(IAA/CSIC), P. Jakobsson (Univ. Iceland), S. Geier (NOT and DARK/NBI), \nT. Pursimo (NOT), report on behalf of a larger collaboration.\n\nWe observed the field of GRB 120805A (Troja et al., GCN 13588) on two \nepochs with the NOT optical telescope, located in La Palma (Canary \nIslands). The two observations were carried out on mean dates Aug 5.936 \nand 13.896 UT, that is 1.0 hr and 8.0 days after the GRB, respectively.\n\nThe source first noticed by Gorosabel et al. (GCN 13591) is detected in \nboth our images, and it varied significantly between the two epochs, as \nwell as compared to the CAHA report (Gorosabel et al., GCN 13591). We \nnote that the object position is now fully consistent with the revised \nXRT error circle (Evans, GCN 13638). We thus conclude that this source \nis the optical afterglow of GRB 120805A.\n\nThe source varied by only about 2 mag between the two NOT epochs \n(corresponding to a power-law decay slope of ~0.3), suggesting that in \nthe later image the host galaxy could be contributing to the total light.\n\nA picture showing the two NOT epochs is posted at this URL:\n\nhttp://www.astro.ku.dk/~malesani/GRB/120805A/GRB120805A_comparison.jpg\n\nWe thank Phil Evans for discussion about the XRT localization of this \nafterglow.",
  "circularId": 13639,
  "createdOn": 1344946251000,
  "email": "malesani@dark-cosmology.dk",
  "subject": "GRB 120805A: optical afterglow confirmation from the NOT",
  "submitter": "Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst  <malesani@dark-cosmology.dk>",
  "eventId": "GRB 120805A"
}