GRB 190829A: NOT optical afterglow detection and spectroscopy
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GRB 190829A : NOT optical afterglow detection and spectroscopy. / Heintz, K. E.; Fynbo, J. P. U.; Jakobsson, P.; Xu, D.; Perley, D. A.; Malesani, D. B.; Viuho, J.; et al., A.
I: GRB Coordinates Network, Circular Service, Nr. 25563, 01.08.2019.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning
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TY - JOUR
T1 - GRB 190829A
T2 - NOT optical afterglow detection and spectroscopy
AU - Heintz, K. E.
AU - Fynbo, J. P. U.
AU - Jakobsson, P.
AU - Xu, D.
AU - Perley, D. A.
AU - Malesani, D. B.
AU - Viuho, J.
AU - et al., A.
PY - 2019/8/1
Y1 - 2019/8/1
N2 - We observed the Swift-detected GRB 190829A (Dichiara et al., GCN 25552) with the Nordic Optical Telescope (NOT) equipped with AlFOSC. We obtained 3x300s r-band images at a mid-time of 02:03:52 UT on August 30 (i.e. 6.1 hr post-burst). We clearly detect the optical counterpart reported by Xu et al. (GCN 25555), superimposed on the SDSS galaxy J025810.28-085719.2 at z=0.08 as noted previously. We measure a preliminary magnitude of r(AB) = 18.9 +/- 0.1 for this source, calibrated against photometry of nearby field stars from the Pan-STARRS catalog. Following the imaging sequence, we obtained a series of spectra with an integration time of 4x600s using grism 4 (covering 320-960 nm), beginning at 02:27:42 UT. The spectrum shows a featureless red continuum, with no clear absorption lines to identify the redshift. Since the continuum is detected at all observed wavelengths we can place a limit on the redshift of z <1.8. DisclaimerNone
AB - We observed the Swift-detected GRB 190829A (Dichiara et al., GCN 25552) with the Nordic Optical Telescope (NOT) equipped with AlFOSC. We obtained 3x300s r-band images at a mid-time of 02:03:52 UT on August 30 (i.e. 6.1 hr post-burst). We clearly detect the optical counterpart reported by Xu et al. (GCN 25555), superimposed on the SDSS galaxy J025810.28-085719.2 at z=0.08 as noted previously. We measure a preliminary magnitude of r(AB) = 18.9 +/- 0.1 for this source, calibrated against photometry of nearby field stars from the Pan-STARRS catalog. Following the imaging sequence, we obtained a series of spectra with an integration time of 4x600s using grism 4 (covering 320-960 nm), beginning at 02:27:42 UT. The spectrum shows a featureless red continuum, with no clear absorption lines to identify the redshift. Since the continuum is detected at all observed wavelengths we can place a limit on the redshift of z <1.8. DisclaimerNone
M3 - Journal article
JO - GRB Coordinates Network, Circular Service
JF - GRB Coordinates Network, Circular Service
IS - 25563
ER -
ID: 261068713