GRB optical afterglow spectrum
The optical afterglow and host galaxy of GRB ,,
... the Optical Transient (OT) of the long–duration gamma-ray burst GRB ...The optical transient was detected independently with the Nordic Optical Telescope and at Calar Alto ...the GRB at ...
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The 2175 angstrom Extinction Feature in the Optical Afterglow Spectrum of GRB 180325A at z =. 2.25
... the spectrum of GRB 180325A afterglow at ...and optical/NIR photometric lightcurves from GROND, NOT, and ...of GRB 180325A are shallower than the mean MW and LMC ...of GRB is ...
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The optical/NIR afterglow of GRB 111209A: Complex yet not unprecedented
... the spectrum, so power-law fits lose their ...three afterglow segments sepa- rated by the “steps” ...using optical (and NIR) data only ( Kann et ...
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The optical/NIR afterglow of GRB 111209A: Complex yet not unprecedented
... of GRB 130925A Another ULGRB with detailed GROND observations is GRB 130925A (see Appendix B for more details on this ...presented optical/NIR observations obtained with GROND and VLT/HAWK-I (late ...
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Discovery of the Optical Afterglow and Host Galaxy of Short GRB 181123B at z = 1.754: Implications for Delay Time Distributions
... (τ)= 0.34 - + 0.39 0.41 Gyr, and log (M å )= 9.96 - + 0.16 0.13 M e . Calculating the mass-weighted age from the SFH gives t gal = 0.91 - + 0.45 0.42 Gyr. The corner plot produced by Prospector, showing the parameter ...
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The Afterglow and Ulirg Host Galaxy of the Dark Short Grb 120804a
... the optical discovery and sub-arcsecond optical and X-ray localization of the afterglow of the short GRB 120804A, as well as optical, near-IR, and radio detections of its host ...The ...
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Broadband Observations of the Afterglow of GRB : Observing the Effect of Inverse Compton Scattering
... multi-frequency optical and radio coverage. Broadband afterglow observa- tions, spanning from X-ray to radio frequencies, provide a probe of the density structure of the circumburst medium, as well as of ...
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The luminous host galaxy, faint supernova and rapid afterglow rebrightening of GRB 100418A
... Aims. GRB 100418A, at a redshift of z = 0.6239, had a bright optical and radio afterglow, and a luminous star-forming host ...the afterglow and the contribution of a possible supernova (SN) ...
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The luminous host galaxy, faint supernova and rapid afterglow rebrightening of GRB 100418A
... for optical extinction we used MW, SMC and LMC extinction models, and determined that there were no large differences with the different extinction laws due to the small amount of extinction and the low ...the ...
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Happy Birthday Swift: Ultra-Long GRB 141121A and its Broadband Afterglow
... standard GRB spectrum (Table 10 in Poole et al. 2008 ). 2.2. Optical RATIR started observing GRB 141121A four hours after the burst and continued monitoring its optical behavior until ...
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Optical and near-infrared observations of the GRB020405 afterglow
... the optical and near-infrared (NIR) afterglow of ...Ground-based optical observations, performed with 8 different telescopes, started about 1 day after the high-energy prompt event and spanned a ...
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The Unusually Long Duration Gamma-ray Burst GRB 000911: Discovery of the afterglow and host galaxy
... bursts, GRB 000911 has the longest duration (T 90 ¼ 500 s) and ranks in the top 1% of BATSE bursts for ...the afterglow of this unique ...and optical observations, we are required to invoke a model ...
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The origin of the early-time optical emission of Swift GRB 080310
... the afterglow fit was to account for the small difference in temporal decay index (α a ) between the higher and lower energy ...the optical and IR chan- ...the spectrum of the afterglow ...
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The Polarization Evolution of the Optical Afterglow of GRB 030329
... The temporal evolution of the degree and angle of polarization together with the R band photometry is shown in Figure 1, demonstrating the presence of non-zero polarization, Π 0 3 2 5% throughout a 38-day period, ...
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GRB 130427A Afterglow: A Test for GRB Models
... in afterglow decay slope if the observing band is between the synchrotron peak frequency ν m and cooling frequency ν c , as is assumed by both L13 and ...of GRB 130427A X-ray ...
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Long optical plateau in the afterglow of the short GRB 150424A with extended emission
... The unique and very-long-duration energy injection pro- vides, within a factor of 2, a similar energy input into the sur- roundings as the prompt GRB emission. That the jet behav- ior is apparent from very early ...
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The Afterglow and Environment of the Short Grb 111117a
... R.M. thanks Rodolfo Barniol Duran and Cristiano Guidorzi for useful discussions. We thank Francesco di Mille for carry- ing out the Magellan FourStar observations, and Andy Mon- son for assistance with the data ...
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MAGIC upper limits on the GRB 090102 afterglow
... the afterglow at the considered time and, as a consequence, the cooling break is re- duced by a factor (1+Y e ...the optical decay observed in GRB 090102 suggests that the standard model cannot ...
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The Late-time Afterglow Evolution of Long Gamma-Ray Bursts GRB 160625B and GRB 160509A
... the optical or X-ray ...of GRB 160625B (and GRB 160509A; see below) is incompatible with the higher frequencies, the source of the radio emission that we do see may not be the same as that of the ...
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Early time optical polarization of GRB Afterglows: GRB 060418 and GRB 090102
... Figure 2: Monte Carlo simulation demonstrating the significance of the GRB 090102 result. See [10] for details. as P = 10.2 ± 1.3%[10] (Figure 2). In interpreting this measurement first we consider whether such a ...
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