342 citations · 1.3k across the 17 of their papers we have counts for
16 papers
A comparison of three neodymium atomic data sets for kilonova modeling
Christopher J. Fontes, Nicholas Vieira, Chris L. Fryer +4
We examine the impact of input neodymium (Nd) atomic data on the light curves and spectra of kilonovae, probing the sensitivity of kilonova observables to the atomic physics of thi…
Afterglows from binary neutron star post-merger systems embedded in AGN disks
Adithan Kathirgamaraju, Hui Li, Benjamin R. Ryan +1
The observability of afterglows from binary neutron star mergers, occurring within AGN disks is investigated. We perform 3D GRMHD simulations of a post-merger system, and follow th…
The impact of r-process heating on the dynamics of neutron star merger accretion disc winds and their electromagnetic radiation
Hannah Klion, Alexander Tchekhovskoy, Daniel Kasen +3
Neutron star merger accretion discs can launch neutron-rich winds of . This ejecta is a prime site for r-process nucleosynthesis, which will produce a r…
Evidence for X-ray Emission in Excess to the Jet Afterglow Decay 3.5 yrs After the Binary Neutron Star Merger GW 170817: A New Emission Component
A. Hajela, R. Margutti, J. S. Bright +34
For the first years after the binary neutron star merger event GW 170817 the radio and X-ray radiation has been dominated by emission from a structured relativistic off-axi…
Two years of non-thermal emission from the binary neutron star merger GW170817: rapid fading of the jet afterglow and first constraints on the kilonova fastest ejecta
A. Hajela, R. Margutti, K. D. Alexander +27
We present Chandra and VLA observations of GW170817 at ~521-743 days post merger, and a homogeneous analysis of the entire Chandra data set. We find that the late-time non-thermal…
Multi-Messenger Astronomy with Extremely Large Telescopes
Ryan Chornock, Philip S. Cowperthwaite, Raffaella Margutti +82
The field of time-domain astrophysics has entered the era of Multi-messenger Astronomy (MMA). One key science goal for the next decade (and beyond) will be to characterize gravitat…
Observational Constraints on Late-Time Radio Rebrightening of GRB-Supernovae
Charee Peters, Alexander J. van der Horst, Laura Chomiuk +6
We present a search for late-time rebrightening of radio emission from three supernovae (SNe) with associated gamma-ray bursts (GRBs). It has been previously proposed that the unus…
Observable Features of GW170817 Kilonova Afterglow
Adithan Kathirgamaraju, Dimitrios Giannios, Paz Beniamini
The neutron star merger, GW170817, was followed by an optical-infrared transient (a kilonova) which indicated that a substantial ejection of mass at trans-relativistic velocities o…
EM counterparts of structured jets from 3D GRMHD simulations
Adithan Kathirgamaraju, Alexander Tchekhovskoy, Dimitrios Giannios +1
GW170817/GRB170817A has offered unprecedented insight into binary neutron star post-merger systems. Its Prompt and afterglow emission imply the presence of a tightly collimated rel…
Prediction of the second peak in the afterglow of GW170817
Maxim V. Barkov, Adithan Kathirgamaraju, Yonggang Luo +2
We performed calculations of the late radio and X-ray afterglow of GRB/GW170817 in the cocoon-jet paradigm, predicting the appearance of a second peak in the afterglow light curve…
A Decline in the X-ray through Radio Emission from GW170817 Continues to Support an Off-Axis Structured Jet
K. D. Alexander, R. Margutti, P. K. Blanchard +17
We present new observations of the binary neutron star merger GW170817 at days post-merger, at radio (Karl G. Jansky Very Large Array; VLA), X-ray (Chandra X-ra…
The Binary Neutron Star event LIGO/VIRGO GW170817 a hundred and sixty days after merger: synchrotron emission across the electromagnetic spectrum
Raffaella Margutti, K. D. Alexander, X. Xie +17
We report deep Chandra, HST and VLA observations of the binary neutron star event GW170817 at d after merger. These observations show that GW170817 has been steadily bright…
Off-axis short GRBs from structured jets as counterparts to GW events
Adithan Kathirgamaraju, Rodolfo Barniol Duran, Dimitrios Giannios
Binary neutron star mergers are considered to be the most favorable sources that produce electromagnetic (EM) signals associated with gravitational waves (GWs). These mergers are t…
TDE fallback cut-off due to a pre-existing accretion disc
Adithan Kathirgamaraju, Rodolfo Barniol Duran, Dimitrios Giannios
Numerous tidal disruption event (TDE) candidates originating from galactic centres have been detected (e.g., by and ASASSN). Some of their host galaxies show typical…
GRB off-axis afterglows and the emission from the accompanying supernovae
Adithan Kathirgamaraju, Rodolfo Barniol Duran, Dimitrios Giannios
Gamma-ray burst (GRB) afterglows are likely produced in the shock that is driven as the GRB jet interacts with the external medium. Long-duration GRBs are also associated with powe…
SuperB Technical Design Report
SuperB Collaboration, M. Baszczyk, P. Dorosz +406
In this Technical Design Report (TDR) we describe the SuperB detector that was to be installed on the SuperB e+e- high luminosity collider. The SuperB asymmetric collider, which wa…