GRB 210217A: a short or a long GRB?

Dimple,; Misra, Kuntal; Ghosh, Ankur; Arun, Kenath; Gupta, Rahul; Kumar, Amit; Resmi, L.; Yadav, Lallan

doi:10.1007/s12036-022-09822-x

Cited by 10 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the spectrum of GRB 201221D we detect [O ] 3727 emission lines, implying the presence of an underlying star-forming host galaxy. Furthermore, both we and multiple other observing teams (Dichiara et al 2020;Kilpatrick et al 2020;Rastinejad et al 2020;Dimple et al 2020) report the detection of a faint extended source at the afterglow position. The host of GRB 201221D (see Sect.…”

Section: The Grb 160410a Environment In the Context Of Long Grbs And ...supporting

confidence: 59%

GRB 160410A: The first chemical study of the interstellar medium of a short GRB

Fernández

Thöne

Канн

et al. 2023

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

Short gamma-ray bursts (SGRBs) are produced by the coalescence of compact binary systems which are remnants of massive stars. GRB 160410A is classified as a short-duration GRB with extended emission and is currently the farthest SGRB with a redshift determined from an afterglow spectrum and also one of the brightest SGRBs to date. The fast reaction to the Neil Gehrels Swift Observatory alert allowed us to obtain a spectrum of the afterglow using the X-shooter spectrograph at the Very Large Telescope (VLT). The spectrum shows several absorption features at a redshift of z = 1.7177, in addition, we detect two intervening systems at z = 1.581 and z = 1.444. The spectrum shows Lyα in absorption with a column density of log (N(HI)/cm2) = 21.2 ± 0.2 which, together with Fe ii, C ii, Si ii, Al iiand O i, allow us to perform the first study of chemical abundances in a SGRB host galaxy. We determine a metallicity of [X/H] = −2.3 ± 0.2 for Fe ii and −2.5 ± 0.2 for Si ii and no dust depletion. We also find no evidence for extinction in the afterglow Spectral Energy Distribution (SED) modeling. The environment has a low degree of ionisation and the C iv and Si iv lines are completely absent. We do not detect an underlying host galaxy down to deep limits. Additionally, we compare GRB 160410A to GRB 201221D, another high-z short GRB that shows absorption lines at z = 1.045 and an underlying massive host galaxy.

show abstract

Section: The Grb 160410a Environment In the Context Of Long Grbs And ...supporting

confidence: 59%

GRB 160410A: The first chemical study of the interstellar medium of a short GRB

Fernández

Thöne

Канн

et al. 2023

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

show abstract

“…After verifying the satisfactory performance, we observed the science targets both in imaging and spectroscopic modes. We carried out the imaging of GRB 210217A 18 field and the spectroscopy of supernova SN 2020jfo using ADFOSC successfully 17…”

Section: Discussionmentioning

confidence: 99%

Characterization of a deep-depletion 4K × 4K charge-coupled device detector system designed for ARIES Devasthal faint object spectrograph

Panchal

Kumar

Omar

et al. 2023

J. Astron. Telesc. Instrum. Syst.

View full text Add to dashboard Cite

.We present the characterization of the charge-coupled device (CCD) system developed for the ARIES Devasthal faint object spectrograph (ADFOSC) instrument on the 3.6 m Devasthal optical telescope (DOT). We describe various experiments performed to tune the CCD controller parameters to obtain optimum performance in single and four-port readout modes. Different methodologies employed for characterizing the performance parameters of the CCD, including bias stability, noise, defects, linearity, and gain, are described here. The CCD has grade-0 characteristics at temperatures close to its nominal operating temperature of −120 ° C. The overall system is linear with a regression coefficient of 0.9999, readout noise of six electrons, and a gain value close to unity. We demonstrate a method to calculate the dark signal using the gradient in the bias frames at lower temperatures. Using the optimized setting, we verify the performance of the CCD detector system on-sky using the ADFOSC instrument mounted on the 3.6 m DOT. Some science targets were observed to evaluate the detector’s performance in both imaging and spectroscopic modes.

show abstract

“…Short GRB afterglows are on average 5-6 mag fainter than long GRB afterglows (Kann et al 2011) and their average redshift is also lower, which might be a bias of their lower luminosity (see e.g. Dimple et al 2022). Although BNS mergers are one secure progenitor channel, it is an open question whether other merger events such as black hole-neutron star (BH-NS) mergers might also cause short GRBs.…”

Section: Introductionmentioning

confidence: 99%

The environments and hosts of neutron star mergers and short GRBs

Thöne

2020

Proc. IAU

View full text Add to dashboard Cite

The hosts of binary neutron star (BNS) mergers and hence short GRBs are not only galaxies with old stellar populations, infact most short GRB hosts are at least mildly star-forming galaxies. According to theoretical studies of merger populations, both short and long merging time-scales are expected. The immediate environments of BNS mergers are not as directly related to the property of the progenitor system as for long GRBs, since the system usually travelled a significant distance from their birth place. However, studying the stellar population properties across the host can still give us vital information on the contribution of formation channels and on merger timescales. Here we review the properties of NS merger hosts in emission using integrated-light and resolved observations. The afterglows of short GRBs furthermore serve to study the interstellar medium in their host galaxies in absorption. We present our best example to date, GRB 160410A at z = 1.7, one of the highest redshift short GRBs.

show abstract

GRB 210217A: a short or a long GRB?

Cited by 10 publications

References 39 publications

GRB 160410A: The first chemical study of the interstellar medium of a short GRB

GRB 160410A: The first chemical study of the interstellar medium of a short GRB

Characterization of a deep-depletion 4K × 4K charge-coupled device detector system designed for ARIES Devasthal faint object spectrograph

The environments and hosts of neutron star mergers and short GRBs

Contact Info

Product

Resources

About