The latest two GRB detected by Hete-2: GRB 051022 and GRB 051028

Castro‐Tirado, A. J.; McBreen, S.; Jelínek, M.; Pandey, S. B.; Bremer, M.; Postigo, A. de Ugarte; Gorosabel, J.; Guziy, S.; Bihain, G.; Caballero, José; Ferrero, P.; Jong, Jeroen de; Misra, Kuntal; Sahu, D. K.

doi:10.1063/1.2207862

Cited by 17 publications

(22 citation statements)

References 4 publications

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“…While no optical afterglow detection was reported for this burst, the presence of a compact, non-varying source within the XRT circle with R ∼ 24 mag was first noted by Castro-Tirado et al (2014) and proposed as a potential host galaxy.…”

Section: Host Galaxy Observations and Redshift Determinationmentioning

confidence: 64%

“…A radio counterpart was also detected at 15.7 GHz with the Arcminute Microkelvin Imager (AMI) Large Array (Anderson et al 2014) coincident with the Swift/XRT position. A potential host galaxy was found with the 10.4 m Gran Telescopio Canarias (GTC; Castro-Tirado et al 2014). We model the multi-wavelength afterglow data using numerical modelling based on hydrodynamical jet simulations -the first time this has been attempted on an optically dark GRB.…”

Section: Introductionmentioning

confidence: 99%

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Detailed multiwavelength modelling of the dark GRB 140713A and its host galaxy

Higgins

Horst

Starling

et al. 2019

Monthly Notices of the Royal Astronomical Society

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We investigate the afterglow of GRB 140713A, a gamma-ray burst (GRB) that was detected and relatively well-sampled at X-ray and radio wavelengths, but was not present at optical and near-infrared wavelengths, despite searches to deep limits. We present the emission spectrum of the likely host galaxy at z = 0.935 ruling out a highredshift explanation for the absence of the optical flux detection. Modelling the GRB multi-wavelength afterglow using the radiative transfer hydrodynamics code boxfit provides constraints on physical parameters of the GRB jet and its environment, for instance a relatively wide jet opening angle and an electron energy distribution slope p below 2. Most importantly, the model predicts an optical flux about two orders of magnitude above the observed limits. We calculated that the required host extinction to explain the observed limits in the r, i and z bands was A host V > 3.2 mag, equivalent to E(B − V) host > 1.0 mag. From the X-ray absorption we derive that the GRB host extinction is A host V = 11.6 +7.5 −5.3 mag, equivalent to E(B − V) host = 3.7 +2.4 −1.7 mag, which is consistent with the extinction required from our boxfit derived fluxes. We conclude that the origin of the optical darkness is a high level of extinction in the line of sight to the GRB, most likely within the GRB host galaxy.

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Section: Host Galaxy Observations and Redshift Determinationmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Detailed multiwavelength modelling of the dark GRB 140713A and its host galaxy

Higgins

Horst

Starling

et al. 2019

Monthly Notices of the Royal Astronomical Society

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“…Optical observations revealed four objects within the initial XRT error circle ranging in brightness from R ≈ 22 to 24.6 mag, of which none revealed any variability between 0.5 and 1.5 d after the burst (Castro-Tirado et al 2006;Piranomonte et al 2006b,a). Only two of these sources are located within the revised XRT error circle with R = 23.7 mag (source "B") and 24.6 mag (source "D") and extended morphologies (Piranomonte et al 2006a).…”

Section: Grb 060801mentioning

confidence: 96%

A New Population of High‐Redshift Short‐Duration Gamma‐Ray Bursts

Berger

Fox

Price

et al. 2007

ApJ

169

141

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The redshift distribution of the short-duration GRBs is a crucial, but currently fragmentary, clue to the nature of their progenitors. Here we present optical observations of nine short GRBs obtained with Gemini, Magellan, and the Hubble Space Telescope. We detect the afterglows and host galaxies of two short bursts, and host galaxies for two additional bursts with known optical afterglow positions, and five with X-ray positions ( ∼ < 6 ′′ radius). In eight of the nine cases we find that the most probable host galaxies are faint, R ≈ 23 − 26.5 mag, and are therefore starkly different from the first few short GRB hosts with R ≈ 17 − 22 mag and z ∼ < 0.5. Indeed, we measure spectroscopic redshifts of z ≈ 0.4 − 1.1 for the four brightest hosts. A comparison to large field galaxy samples, as well as the hosts of long GRBs and previous short GRBs, indicates that the fainter hosts likely reside at z ∼ > 1. Our most conservative limit is that at least half of the five hosts without a known redshift reside at z > 0.7 (97% confidence level), suggesting that about 1/3 − 2/3 of all short GRBs originate at higher redshifts than previously determined. This has two important implications: (i) We constrain the acceptable age distributions to a wide lognormal (σ ∼ > 1) with τ * ∼ 4 − 8 Gyr, or to a power law, P (τ ) ∝ τ n , with −1 ∼ < n ∼ < 0; and (ii) the inferred isotropic energies, E γ,iso ∼ 10 50 − 10 52 erg, are significantly larger than ∼ 10 48 − 10 49 erg for the low redshift short GRBs, indicating a large spread in energy release or jet opening angles. Finally, we re-iterate the importance of short GRBs as potential gravitational wave sources and find a conservative Advanced LIGO detection rate of ∼ 2 − 6 yr −1 .

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“…This makes GRB 090423 amongst the highest redshift GRBs discovered. The afterglow has been detected in the millimeter continuum by the IRAM Plateau de Bure interferometer (PdBI) at 3 mm wavelengths with a flux density of 0.3±0.1 mJy (Castro-Tirado et al 2009, de Ugarte Postigo et al 2012, obtained on 2009. An upper limit of the afterglow and the host galaxy FIR flux density at 1.2 mm wavelengths of 0.23±0.32mJy using MAMBO has also been reported (Riechers et al 2009, obtained on 2009.…”

Section: Grb 090423mentioning

confidence: 99%

EVIDENCE FOR LOW EXTINCTION IN ACTIVELY STAR-FORMING GALAXIES ATz> 6.5

Walter¹,

Decarli²,

Carilli³

et al. 2012

ApJ

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We present a search for the [C II] 158µm fine structure line (a main cooling line of the interstellar medium) and the underlying far-infrared (FIR) continuum in three high-redshift (6.66 LAEs studied here is lower by a factor of a few than what has recently been found in some LAEs at lower redshift (26 LAE sample is consistent with recent rest-frame UV studies of z∼7 Lyman-Break-Galaxies (LBGs).

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The latest two GRB detected by Hete-2: GRB 051022 and GRB 051028

Cited by 17 publications

References 4 publications

Detailed multiwavelength modelling of the dark GRB 140713A and its host galaxy

Detailed multiwavelength modelling of the dark GRB 140713A and its host galaxy

A New Population of High‐Redshift Short‐Duration Gamma‐Ray Bursts

EVIDENCE FOR LOW EXTINCTION IN ACTIVELY STAR-FORMING GALAXIES ATz> 6.5

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