Lowly Polarized Light from a Highly Magnetized Jet of GRB 190114C

Jordana-Mitjans, N.; Mundell, C. G.; Kobayashi, S.; Smith, R. J.; Guidorzi, C.; Steele, I. A.; Shrestha, Manisha; Gomboc, A.; Marongiu, M.; Martone, R.; Липунов, В. М.; Gorbovskoy, E.; Buckley, D.; Rebolo, R.; Буднев, Н. М.

doi:10.3847/1538-4357/ab7248

Cited by 53 publications

(54 citation statements)

References 116 publications

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“…MASTER Global Robotic Net was developed to study the key tasks of modern extreme energy astrophysics: to discover optical counterparts of gamma-ray bursts and to discover polarization of GRB prompt optical emission [24][25][26][27][28][29] ; to independently localize the sources of gravitational wave, detected by LIGO/Virgo 12,13 , to investigate high energy neutrino sources 30 , fast radio bursts sources [31][32][33][34] and other extreme processes in Universe. MASTER conducted optical observations that reveal strong evidence for high energy neutrino progenitor 30 .…”

Section: Monitoringmentioning

confidence: 99%

First Prompt Optical Observations of Nearest Fast Radio Burst new New Astromomical Method

Липунов

Корнилов

Gorbovskoy

et al. 2020

Preprint

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With the discovery of gamma ray bursts1,2, it became clear that our Universe flickers with superfast catastrophic events, sometimes lasting for a thousandths of a second. These ultra-fast transients - the peculiar one-day butterflies of the Universe - shine so brightly that they are noticed even on the other end of the Universe and, moreover, by very small telescopes. But in the radio range, the sky remained silent until the beginning of the 21st century. Only in 2007, radio astronomers analyzing archival observations of the Parkes Radio Telescope first encountered fast transients 3,4 . About a hundred such sources have already been discovered. We report the first optical observation of the closest radio burster FRB 180916.J0158+655-8 synchronously with a radio burst. In total, we obtained about 155,093 images at MASTER Global Robotic Net9*. In the course of our observations, we found a new method for detecting objects deep below the noise level. In addition, using the new method, we found the excess of photons in the FRB direction at a level of 23 m associated with the emission of the host galaxy.

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Section: Monitoringmentioning

confidence: 99%

First Prompt Optical Observations of Nearest Fast Radio Burst new New Astromomical Method

Липунов

Корнилов

Gorbovskoy

et al. 2020

Preprint

Self Cite

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“…Note that ref. 50 found chromatic evolution in their early RINGO3 data. However, this effect is small, which leads to some additional scatter around the first steep-to-shallow decay transition.…”

Section: Gev (Fermi-lat) Observationsmentioning

confidence: 98%

“…Optical Observations: Optical data have been gathered from refs. 27,50,51 as well as GCN data from refs. [52][53][54][55][56][57][58][59] .…”

Section: Gev (Fermi-lat) Observationsmentioning

confidence: 99%

A Cosmological Fireball with Thirty-Percent Gamma-Ray Radiative Efficiency

Wang

Ryde

et al. 2021

Preprint

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Gamma-ray bursts (GRBs) are the most powerful explosions in the universe. The composition of the jets is, however, subject to debate\cite{Peer2015,Zhang2018}. Whereas the traditional model invokes a relativistic matter-dominated fireball with a bright photosphere emission component\cite{Meszaros2000}, the lack of the detection of such a component in some GRBs\cite{Abdo2009} has led to the conclusion that GRB jets may be Poynting-flux-dominated\cite{Zhang2009}. Furthermore, how efficiently the jet converts its energy to radiation is poorly constrained. A definitive diagnosis of the GRB jet composition and measurement of GRB radiative efficiency requires high-quality prompt emission and afterglow data, which has not been possible with the sparse observations in the past. Here we report a comprehensive temporal and spectral analysis of the TeV-emitting bright GRB 190114C. Its fluence is one of the highest of all GRBs detected so far, which allows us to perform a high-significance study on the prompt emission spectral properties and their variations down to a very short timescale of about 0.1 s. We identify a clear thermal component during the first two prompt emission episodes, which is fully consistent with the prediction of the fireball photosphere model. The third episode of the prompt emission is consistent with synchrotron radiation from the deceleration of the fireball. This allows us to directly dissect the fireball energy budget in a parameter-independent manner\cite{Zhang2021} and robustly measure a nearly $30\%$ radiative efficiency for this GRB. The afterglow microphysics parameters can be also well constrained from the data. GRB 190114C, therefore, exhibits the evolution of a textbook-version relativistic fireball, suggesting that fireballs can indeed power at least some GRBs with high efficiency.

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“…For 6 events (GRB 080928, GRB 091018, GRB 091208B, GRB 110205A, GRB 121024A, and GRB 131030A), the optical observations reported the detection of intrinsic polarization 17,19,20,[54][55][56] . For GRB 190114C, Jordana-Mitjans et al (2020) 23 reported the detection of polarization induced by the dust in the host galaxy.…”

Section: Very Large Telescope Observationsmentioning

confidence: 99%

Simultaneous Radio and Optical Polarimetry of GRB 191221B Afterglow

Urata¹,

Toma²,

Covino³

et al. 2021

Preprint

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Gamma-ray bursts (GRBs) are the most luminous gamma-ray transients in the universe, and are utilized as probes of early stars, gravitational wave counterparts, and collision less shock physics. For understanding the fundamental physical quantities of GRB jets and their environments as well as their emission mechanism, coordinated multi-wavelength (semi-)simultaneous measurements are crucial as the global communities demonstrated in the past three decades. 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 has yet been performed. Here, we report the first coordinated simultaneous polarimetry in the optical and radio bands for the afterglow associated to 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 in comparison with the optical one. This result excludes a simple one-zone model that the polarization degree is nearly constant above the synchrotron self-absorption frequency, and has important implications for plasma-scale turbulent magnetic fields and existence of cool electrons. Our simultaneous polarization angle measurement supports the latter model rather than the former one. The existence of cool electrons increases the estimate of the total jet energy by a factor of > 2 for this typical GRB. 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.

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Lowly Polarized Light from a Highly Magnetized Jet of GRB 190114C

Cited by 53 publications

References 116 publications

First Prompt Optical Observations of Nearest Fast Radio Burst new New Astromomical Method

First Prompt Optical Observations of Nearest Fast Radio Burst new New Astromomical Method

A Cosmological Fireball with Thirty-Percent Gamma-Ray Radiative Efficiency

Simultaneous Radio and Optical Polarimetry of GRB 191221B Afterglow

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