Simultaneous radio and optical polarimetry of GRB 191221B afterglow

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Simultaneous radio and optical polarimetry of GRB 191221B afterglow. / Urata, Yuji; Toma, Kenji; Covino, Stefano; Wiersema, Klaas; Huang, Kuiyun; Shimoda, Jiro; Kuwata, Asuka; Nagao, Sota; Asada, Keiichi; Nagai, Hiroshi; Takahashi, Satoko; Chung, Chao-En; Petitpas, Glen; Yamaoka, Kazutaka; Izzo, Luca; Fynbo, Johan; de Ugarte Postigo, Antonio; Arabsalmani, Maryam; Tashiro, Makoto.

I: Nature Astronomy, Bind 7, 08.01.2023, s. 80-87.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Urata, Y, Toma, K, Covino, S, Wiersema, K, Huang, K, Shimoda, J, Kuwata, A, Nagao, S, Asada, K, Nagai, H, Takahashi, S, Chung, C-E, Petitpas, G, Yamaoka, K, Izzo, L, Fynbo, J, de Ugarte Postigo, A, Arabsalmani, M & Tashiro, M 2023, 'Simultaneous radio and optical polarimetry of GRB 191221B afterglow', Nature Astronomy, bind 7, s. 80-87. https://doi.org/10.1038/s41550-022-01832-7

APA

Urata, Y., Toma, K., Covino, S., Wiersema, K., Huang, K., Shimoda, J., Kuwata, A., Nagao, S., Asada, K., Nagai, H., Takahashi, S., Chung, C-E., Petitpas, G., Yamaoka, K., Izzo, L., Fynbo, J., de Ugarte Postigo, A., Arabsalmani, M., & Tashiro, M. (2023). Simultaneous radio and optical polarimetry of GRB 191221B afterglow. Nature Astronomy, 7, 80-87. https://doi.org/10.1038/s41550-022-01832-7

Vancouver

Urata Y, Toma K, Covino S, Wiersema K, Huang K, Shimoda J o.a. Simultaneous radio and optical polarimetry of GRB 191221B afterglow. Nature Astronomy. 2023 jan. 8;7:80-87. https://doi.org/10.1038/s41550-022-01832-7

Author

Urata, Yuji ; Toma, Kenji ; Covino, Stefano ; Wiersema, Klaas ; Huang, Kuiyun ; Shimoda, Jiro ; Kuwata, Asuka ; Nagao, Sota ; Asada, Keiichi ; Nagai, Hiroshi ; Takahashi, Satoko ; Chung, Chao-En ; Petitpas, Glen ; Yamaoka, Kazutaka ; Izzo, Luca ; Fynbo, Johan ; de Ugarte Postigo, Antonio ; Arabsalmani, Maryam ; Tashiro, Makoto. / Simultaneous radio and optical polarimetry of GRB 191221B afterglow. I: Nature Astronomy. 2023 ; Bind 7. s. 80-87.

Bibtex

@article{2403e6ca849a4ddda13c912a8b9fe1e1,
title = "Simultaneous radio and optical polarimetry of GRB 191221B afterglow",
abstract = "Gamma-ray bursts (GRBs) are the most luminous transients in the universe and are utilized as probes of early stars, gravitational wave counterparts and collisionless shock physics. In spite of studies on polarimetry of GRBs in individual wavelengths that characterized intriguing properties of prompt emission and afterglow, no coordinated multi-wavelength measurements have yet been performed. Here we report the first coordinated simultaneous polarimetry in the optical and radio bands for the afterglow associated with the typical long GRB 191221B. Our observations successfully caught the radio emission, which is not affected by synchrotron self-absorption, and show that the emission is depolarized in the radio band compared with the optical one. Our simultaneous polarization angle measurement and temporal polarization monitoring indicate the existence of cool electrons that increase the estimate of jet kinetic energy by a factor of more than 4 for this GRB afterglow. Further coordinated multi-wavelength polarimetric campaigns would improve our understanding of the total jet energies and magnetic field configurations in the emission regions of various types of GRBs, which are required to comprehend the mass scales of their progenitor systems and the physics of collisionless shocks.",
keywords = "GAMMA-RAY BURSTS, RELATIVISTIC COLLISIONLESS SHOCKS, LIGHT CURVES, POLARIZATION, SPECTRA, ENERGY, SPECTROPOLARIMETRY, ACCELERATION, ULTRAVIOLET, ABSORPTION",
author = "Yuji Urata and Kenji Toma and Stefano Covino and Klaas Wiersema and Kuiyun Huang and Jiro Shimoda and Asuka Kuwata and Sota Nagao and Keiichi Asada and Hiroshi Nagai and Satoko Takahashi and Chao-En Chung and Glen Petitpas and Kazutaka Yamaoka and Luca Izzo and Johan Fynbo and {de Ugarte Postigo}, Antonio and Maryam Arabsalmani and Makoto Tashiro",
year = "2023",
month = jan,
day = "8",
doi = "10.1038/s41550-022-01832-7",
language = "English",
volume = "7",
pages = "80--87",
journal = "Nature Astronomy",
issn = "2397-3366",
publisher = "nature publishing group",

}

RIS

TY - JOUR

T1 - Simultaneous radio and optical polarimetry of GRB 191221B afterglow

AU - Urata, Yuji

AU - Toma, Kenji

AU - Covino, Stefano

AU - Wiersema, Klaas

AU - Huang, Kuiyun

AU - Shimoda, Jiro

AU - Kuwata, Asuka

AU - Nagao, Sota

AU - Asada, Keiichi

AU - Nagai, Hiroshi

AU - Takahashi, Satoko

AU - Chung, Chao-En

AU - Petitpas, Glen

AU - Yamaoka, Kazutaka

AU - Izzo, Luca

AU - Fynbo, Johan

AU - de Ugarte Postigo, Antonio

AU - Arabsalmani, Maryam

AU - Tashiro, Makoto

PY - 2023/1/8

Y1 - 2023/1/8

N2 - Gamma-ray bursts (GRBs) are the most luminous transients in the universe and are utilized as probes of early stars, gravitational wave counterparts and collisionless shock physics. In spite of studies on polarimetry of GRBs in individual wavelengths that characterized intriguing properties of prompt emission and afterglow, no coordinated multi-wavelength measurements have yet been performed. Here we report the first coordinated simultaneous polarimetry in the optical and radio bands for the afterglow associated with the typical long GRB 191221B. Our observations successfully caught the radio emission, which is not affected by synchrotron self-absorption, and show that the emission is depolarized in the radio band compared with the optical one. Our simultaneous polarization angle measurement and temporal polarization monitoring indicate the existence of cool electrons that increase the estimate of jet kinetic energy by a factor of more than 4 for this GRB afterglow. Further coordinated multi-wavelength polarimetric campaigns would improve our understanding of the total jet energies and magnetic field configurations in the emission regions of various types of GRBs, which are required to comprehend the mass scales of their progenitor systems and the physics of collisionless shocks.

AB - Gamma-ray bursts (GRBs) are the most luminous transients in the universe and are utilized as probes of early stars, gravitational wave counterparts and collisionless shock physics. In spite of studies on polarimetry of GRBs in individual wavelengths that characterized intriguing properties of prompt emission and afterglow, no coordinated multi-wavelength measurements have yet been performed. Here we report the first coordinated simultaneous polarimetry in the optical and radio bands for the afterglow associated with the typical long GRB 191221B. Our observations successfully caught the radio emission, which is not affected by synchrotron self-absorption, and show that the emission is depolarized in the radio band compared with the optical one. Our simultaneous polarization angle measurement and temporal polarization monitoring indicate the existence of cool electrons that increase the estimate of jet kinetic energy by a factor of more than 4 for this GRB afterglow. Further coordinated multi-wavelength polarimetric campaigns would improve our understanding of the total jet energies and magnetic field configurations in the emission regions of various types of GRBs, which are required to comprehend the mass scales of their progenitor systems and the physics of collisionless shocks.

KW - GAMMA-RAY BURSTS

KW - RELATIVISTIC COLLISIONLESS SHOCKS

KW - LIGHT CURVES

KW - POLARIZATION

KW - SPECTRA

KW - ENERGY

KW - SPECTROPOLARIMETRY

KW - ACCELERATION

KW - ULTRAVIOLET

KW - ABSORPTION

U2 - 10.1038/s41550-022-01832-7

DO - 10.1038/s41550-022-01832-7

M3 - Journal article

VL - 7

SP - 80

EP - 87

JO - Nature Astronomy

JF - Nature Astronomy

SN - 2397-3366

ER -

ID: 338785765