GRB 191016A: a highly collimated gamma-ray burst jet with magnetized energy injection

M. Shrestha; I. A. Steele; S. Kobayashi; N. Jordana-Mitjans; R. J. Smith; H. Jermak; D. Arnold; C. G. Mundell; A. Gomboc; C. Guidorzi

doi:10.1093/mnras/stab3368

GRB 191016A: a highly collimated gamma-ray burst jet with magnetized energy injection

M. Shrestha, I. A. Steele, S. Kobayashi, N. Jordana-Mitjans, R. J. Smith, H. Jermak, D. Arnold, C. G. Mundell, A. Gomboc, C. Guidorzi

Research output: Contribution to journal › Article › peer-review

8 Citations (SciVal)

Abstract

Long gamma-ray burst GRB 191016A was a bright and slow rising burst that was detected by the Swift satellite and followed up by ground based Liverpool Telescope (LT). LT follow up started 2411 s after the Swift Burst Alert Telescope (BAT) trigger using imager IO:O around the time of the late optical peak. From 3987–7687 s, we used the LT polarimeter RINGO3 to make polarimetric and photometric observations of the GRB simultaneously in the V, R, and I bands. The combined optical light curve shows an initial late peak followed by a decline until 6147 s, 6087 s, and 5247 s for I, R, and V filters respectively followed by a flattening phase. There is evidence of polarization at all phases including polarization (P = 14.6 ± 7.2 per cent) which is coincident with the start of the flattening phase. The combination of the light curve morphology and polarization measurement favours an energy injection scenario where slower magnetized ejecta from the central engine catches up with the decelerating blast wave. We calculate the minimum energy injection to be ΔE/E > 0.36. At a later time, combining the optical light curve from Burst Observer and Optical Transient Exploring System (BOOTES) (reported via GCN) and IO:O we see evidence of a jet break with jet opening angle 2^◦.

Original language	English
Pages (from-to)	5964-5973
Number of pages	10
Journal	Monthly Notices of the Royal Astronomical Society
Volume	509
Issue number	4
Early online date	24 Nov 2021
DOIs	https://doi.org/10.1093/mnras/stab3368
Publication status	Published - 1 Feb 2022

Bibliographical note

Funding Information:
Operation of LT on the island of La Palma by Liverpool John Moores University at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias is financially supported by the UK Science and Technologies Facilities Council (STFC). MS is supported by an STFC consolidated grant to LJMU. This research made use of PHOTUTILS, an ASTROPY package for detection and photometry of astronomical sources [Bradley et al. (2019)]. AG acknowledges the financial support from the Slovenian Research Agency (research core funding P1-0031, infrastructure program I0-0033, project grants J1-8136, J1-2460) and networking support by the COST Actions CA16104 GWverse and CA16214 PHAROS. CGM and NJM thank Hiroko and Jim Sherwin for financial support. This work made use of data supplied by the UK Swift Science Data Centre at the University of Leicester. We would like to thank our anonymous referee for thoughtful comments that have greatly improved the paper.

Funding

Operation of LT on the island of La Palma by Liverpool John Moores University at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias is financially supported by the UK Science and Technologies Facilities Council (STFC). MS is supported by an STFC consolidated grant to LJMU. This research made use of PHOTUTILS, an ASTROPY package for detection and photometry of astronomical sources [Bradley et al. (2019)]. AG acknowledges the financial support from the Slovenian Research Agency (research core funding P1-0031, infrastructure program I0-0033, project grants J1-8136, J1-2460) and networking support by the COST Actions CA16104 GWverse and CA16214 PHAROS. CGM and NJM thank Hiroko and Jim Sherwin for financial support. This work made use of data supplied by the UK Swift Science Data Centre at the University of Leicester. We would like to thank our anonymous referee for thoughtful comments that have greatly improved the paper.

Keywords

gamma-ray burst: individual: GRB 191016A
techniques: photometric
techniques: polarimetric

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1093/mnras/stab3368

Cite this

@article{02eb4318bf50486689a641fc4c91d2c0,

title = "GRB 191016A: a highly collimated gamma-ray burst jet with magnetized energy injection",

abstract = "Long gamma-ray burst GRB 191016A was a bright and slow rising burst that was detected by the Swift satellite and followed up by ground based Liverpool Telescope (LT). LT follow up started 2411 s after the Swift Burst Alert Telescope (BAT) trigger using imager IO:O around the time of the late optical peak. From 3987–7687 s, we used the LT polarimeter RINGO3 to make polarimetric and photometric observations of the GRB simultaneously in the V, R, and I bands. The combined optical light curve shows an initial late peak followed by a decline until 6147 s, 6087 s, and 5247 s for I, R, and V filters respectively followed by a flattening phase. There is evidence of polarization at all phases including polarization (P = 14.6 ± 7.2 per cent) which is coincident with the start of the flattening phase. The combination of the light curve morphology and polarization measurement favours an energy injection scenario where slower magnetized ejecta from the central engine catches up with the decelerating blast wave. We calculate the minimum energy injection to be ΔE/E > 0.36. At a later time, combining the optical light curve from Burst Observer and Optical Transient Exploring System (BOOTES) (reported via GCN) and IO:O we see evidence of a jet break with jet opening angle 2◦.",

keywords = "gamma-ray burst: individual: GRB 191016A, techniques: photometric, techniques: polarimetric",

author = "M. Shrestha and Steele, \{I. A.\} and S. Kobayashi and N. Jordana-Mitjans and Smith, \{R. J.\} and H. Jermak and D. Arnold and Mundell, \{C. G.\} and A. Gomboc and C. Guidorzi",

note = "Funding Information: Operation of LT on the island of La Palma by Liverpool John Moores University at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias is financially supported by the UK Science and Technologies Facilities Council (STFC). MS is supported by an STFC consolidated grant to LJMU. This research made use of PHOTUTILS, an ASTROPY package for detection and photometry of astronomical sources [Bradley et al. (2019)]. AG acknowledges the financial support from the Slovenian Research Agency (research core funding P1-0031, infrastructure program I0-0033, project grants J1-8136, J1-2460) and networking support by the COST Actions CA16104 GWverse and CA16214 PHAROS. CGM and NJM thank Hiroko and Jim Sherwin for financial support. This work made use of data supplied by the UK Swift Science Data Centre at the University of Leicester. We would like to thank our anonymous referee for thoughtful comments that have greatly improved the paper. ",

year = "2022",

month = feb,

day = "1",

doi = "10.1093/mnras/stab3368",

language = "English",

volume = "509",

pages = "5964--5973",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

TY - JOUR

T1 - GRB 191016A

T2 - a highly collimated gamma-ray burst jet with magnetized energy injection

AU - Shrestha, M.

AU - Steele, I. A.

AU - Kobayashi, S.

AU - Jordana-Mitjans, N.

AU - Smith, R. J.

AU - Jermak, H.

AU - Arnold, D.

AU - Mundell, C. G.

AU - Gomboc, A.

AU - Guidorzi, C.

N1 - Funding Information: Operation of LT on the island of La Palma by Liverpool John Moores University at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias is financially supported by the UK Science and Technologies Facilities Council (STFC). MS is supported by an STFC consolidated grant to LJMU. This research made use of PHOTUTILS, an ASTROPY package for detection and photometry of astronomical sources [Bradley et al. (2019)]. AG acknowledges the financial support from the Slovenian Research Agency (research core funding P1-0031, infrastructure program I0-0033, project grants J1-8136, J1-2460) and networking support by the COST Actions CA16104 GWverse and CA16214 PHAROS. CGM and NJM thank Hiroko and Jim Sherwin for financial support. This work made use of data supplied by the UK Swift Science Data Centre at the University of Leicester. We would like to thank our anonymous referee for thoughtful comments that have greatly improved the paper.

PY - 2022/2/1

Y1 - 2022/2/1

N2 - Long gamma-ray burst GRB 191016A was a bright and slow rising burst that was detected by the Swift satellite and followed up by ground based Liverpool Telescope (LT). LT follow up started 2411 s after the Swift Burst Alert Telescope (BAT) trigger using imager IO:O around the time of the late optical peak. From 3987–7687 s, we used the LT polarimeter RINGO3 to make polarimetric and photometric observations of the GRB simultaneously in the V, R, and I bands. The combined optical light curve shows an initial late peak followed by a decline until 6147 s, 6087 s, and 5247 s for I, R, and V filters respectively followed by a flattening phase. There is evidence of polarization at all phases including polarization (P = 14.6 ± 7.2 per cent) which is coincident with the start of the flattening phase. The combination of the light curve morphology and polarization measurement favours an energy injection scenario where slower magnetized ejecta from the central engine catches up with the decelerating blast wave. We calculate the minimum energy injection to be ΔE/E > 0.36. At a later time, combining the optical light curve from Burst Observer and Optical Transient Exploring System (BOOTES) (reported via GCN) and IO:O we see evidence of a jet break with jet opening angle 2◦.

AB - Long gamma-ray burst GRB 191016A was a bright and slow rising burst that was detected by the Swift satellite and followed up by ground based Liverpool Telescope (LT). LT follow up started 2411 s after the Swift Burst Alert Telescope (BAT) trigger using imager IO:O around the time of the late optical peak. From 3987–7687 s, we used the LT polarimeter RINGO3 to make polarimetric and photometric observations of the GRB simultaneously in the V, R, and I bands. The combined optical light curve shows an initial late peak followed by a decline until 6147 s, 6087 s, and 5247 s for I, R, and V filters respectively followed by a flattening phase. There is evidence of polarization at all phases including polarization (P = 14.6 ± 7.2 per cent) which is coincident with the start of the flattening phase. The combination of the light curve morphology and polarization measurement favours an energy injection scenario where slower magnetized ejecta from the central engine catches up with the decelerating blast wave. We calculate the minimum energy injection to be ΔE/E > 0.36. At a later time, combining the optical light curve from Burst Observer and Optical Transient Exploring System (BOOTES) (reported via GCN) and IO:O we see evidence of a jet break with jet opening angle 2◦.

KW - gamma-ray burst: individual: GRB 191016A

KW - techniques: photometric

KW - techniques: polarimetric

UR - https://www.scopus.com/pages/publications/85127385963

U2 - 10.1093/mnras/stab3368

DO - 10.1093/mnras/stab3368

M3 - Article

AN - SCOPUS:85127385963

SN - 0035-8711

VL - 509

SP - 5964

EP - 5973

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

GRB 191016A: a highly collimated gamma-ray burst jet with magnetized energy injection

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this