The X-ray counterpart to the gravitational-wave event GW170817

Troja, E.; Piro, L.; Eerten, Hendrik van; Wollaeger, Ryan; Im, Myungshin; Fox, O.; Butler, Nathaniel R.; Cenko, S. Bradley; Sakamoto, T.; Fryer, Christopher L.; Ricci, R.; Lien, A. Y.; Ryan, Russell E.; Korobkin, Oleg; Lee, Seong-Kook; Burgess, J. Michael; Lee, W.H.; Watson, A. M.; Choi, Changsu; Covino, S.; D’Avanzo, P.; Fontes, Christopher J.; González, J. Becerra; Khandrika, H.; Kim, J.; Kim, S.-L.; Lee, C.-U.; Lee, H.M.; Kutyrev, A.; Lim, Gu; Sánchez-Ramírez, R.; Veilleux, Sylvain; Wieringa, M.; Yoon, Yongmin

doi:10.1038/nature24290

Cited by 829 publications

(736 citation statements)

References 71 publications

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“…In this case, emission originates from the part of the jet expanding towards the observer. Indeed, Troja et al (2017), interpret an off-axis afterglow via an observed delay in the X-ray emission. Additionally, a slowly expanding cocoon can also be formed by the material pushed away during the propagation of the jet (Lazzati et al 2017).…”

Section: Introductionmentioning

confidence: 99%

The Peculiar Physics of GRB 170817A and Their Implications for Short GRBs

Bégué

Burgess

Greiner

2017

ApJL

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The unexpected nearby gamma-ray burst GRB 170817A associated with the LIGO binary neutron star merger event GW170817 presents a challenge to the current understanding of the emission physics of short gamma-ray bursts (GRBs). The event's low luminosity but similar peak energy compared to standard short GRBs are difficult to explain with current models, challenging our understanding of the GRB emission process. Emission models invoking synchrotron radiation from electrons accelerated in shocks and photospheric emission are particularly challenging explanations for this burst.

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Section: Introductionmentioning

confidence: 99%

The Peculiar Physics of GRB 170817A and Their Implications for Short GRBs

Bégué

Burgess

Greiner

2017

ApJL

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“…Fitting parameters for different lines are shown in Table 1 Table 2. Panel (a): The fitting of X-ray data (including black upper limits and red data-points) (Evans et al 2017;Troja et al 2017) with the two-component jet model. …”

Section: Discussionmentioning

confidence: 99%

“…Table 1. Panel (a): The fitting of X-ray data (including black upper limits and red data-points) (Evans et al 2017;Troja et al 2017) with the structured jet model. Fitting parameters for different lines are shown in Table 1 Table 2.…”

Section: Discussionmentioning

confidence: 99%

“…The relevant fitting parameters are given in Table 1 and Table 2. The X-ray upper limits are given by Swift-XRT and NuSTAR (Evans et al 2017), while the two detections of Chandra are indicated by the red datapoints (Troja et al 2017). For the optical band, we choose r-band to fit and the data are collected in the literature (Andreoni et al 2017;Arcavi et al 2017;Coulter et al 2017;Drout et al 2017;Kilpatrick et al 2017;Pian et al 2017;Shappee et al 2017;Smartt et al 2017).…”

Section: Application To Gw170817/grb170817amentioning

confidence: 99%

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Afterglows and Kilonovae Associated with Nearby Low-luminosity Short-duration Gamma-Ray Bursts: Application to GW170817/GRB 170817A

Xiao

Liu

Dai

et al. 2017

ApJL

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Very recently, the gravitational wave (GW) event GW170817 was discovered to be associated with the short gamma-ray burst (GRB) 170817A. Multi-wavelength follow-up observations were carried out, and X-ray, optical and radio counterparts to GW170817 were detected. The observations undoubtedly indicate that GRB170817A originates from a binary neutron star (BNS) merger. However, the GRB falls into the low-luminosity class which could have a higher statistical occurrence rate and detection probability than the normal (high-luminosity) class. This implies a possibility that GRB170817A is intrinsically powerful but we are off-axis and only observe its side emission. In this paper, we provide a timely modeling of the multi-wavelength afterglow emission from this GRB and the associated kilonova signal from the merger ejecta, under the assumption of a structured jet, a two-component jet, and an intrinsically less-energetic quasi-isotropic fireball respectively. Comparing the afterglow properties with the multi-wavelength follow-up observations, we can distinguish between these three models. Furthermore, a few model parameters (e.g., the ejecta mass and velocity) can be constrained.

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“…Verifying the existence of a prompt low-frequency radio counterpart to NS-NS(BH) merger events has taken on new significance with the detection of the binary neutron star merger GW170817 in GWs and the detection of its counterparts across the electromagnetic spectrum (Abbott et al 2017c(Abbott et al , 2017dCoulter et al 2017;Evans et al 2017;Hallinan et al 2017;Kasliwal et al 2017;Troja et al 2017). Strategies for follow-up of GW events with EM facilities are now being regularly deployed as GW alerts are released to partner observers and facilities, spanning the entire EM spectrum from radio to gamma-rays, and including neutrino facilities (Singer et al 2014).…”

Section: Gravitational Wave Follow-upmentioning

confidence: 99%

A Simultaneous Search for Prompt Radio Emission Associated with the Short GRB 170112A Using the All-sky Imaging Capability of the OVRO-LWA

Anderson

Hallinan

Eastwood

et al. 2018

ApJ

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We have conducted the most sensitive low-frequency (below 100 MHz) search to date for prompt, low-frequency radio emission associated with short-duration gamma-ray bursts (GRBs), using the Owens Valley Radio Observatory Long Wavelength Array (OVRO-LWA). The OVRO-LWA's nearly full-hemisphere field of view (∼20,000 square degrees) allows us to search for low-frequency (sub-100 MHz) counterparts for a large sample of the subset of GRB events for which prompt radio emission has been predicted. Following the detection of short GRB 170112A by Swift, we used all-sky OVRO-LWA images spanning one hour prior to and two hours following the GRB event to search for a transient source coincident with the position of GRB 170112A. We detect no transient source to within a 3σ flux density limit of 4.5Jy at 13 s timescales for frequencies spanning 27-84MHz. We place constraints on a number of models predicting prompt, low-frequency radio emission accompanying short GRBs and their potential binary neutron star merger progenitors, and place an upper limit of L radio / L γ 3.5×10−6 on the fraction of energy released in the prompt radio emission, under the assumptions of negligible scattering of the radio pulse and beaming of emission along the line of sight. These observations serve as a pilot effort for a program targeting a wider sample of both short and long GRBs with the OVRO-LWA, including bursts with confirmed redshift measurements that are critical to placing constraining limits on prompt radio emission models, as well as a program for the follow-up of gravitational wave compact binary coalescence events detected by advanced LIGO and Virgo.

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The X-ray counterpart to the gravitational-wave event GW170817

Cited by 829 publications

References 71 publications

The Peculiar Physics of GRB 170817A and Their Implications for Short GRBs

The Peculiar Physics of GRB 170817A and Their Implications for Short GRBs

Afterglows and Kilonovae Associated with Nearby Low-luminosity Short-duration Gamma-Ray Bursts: Application to GW170817/GRB 170817A

A Simultaneous Search for Prompt Radio Emission Associated with the Short GRB 170112A Using the All-sky Imaging Capability of the OVRO-LWA

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