Search Results - "Eftekhari, T."

Associating Fast Radio Bursts with Their Host Galaxies by Eftekhari, T., Berger, E.

“…The first precise localization of a fast radio burst (FRB) sheds light on the nature of these mysterious bursts and the physical mechanisms that power them…”
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Radio Monitoring of the Tidal Disruption Event Swift J164449.3+573451. III. Late-time Jet Energetics and a Deviation from Equipartition by Eftekhari, T., Berger, E., Zauderer, B. A., Margutti, R., Alexander, K. D.

“…We present continued radio and X-ray observations of the relativistic tidal disruption event Swift J164449.3+573451 extending to δt 2000 days after discovery…”
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Empirical Constraints on the Origin of Fast Radio Bursts: Volumetric Rates and Host Galaxy Demographics as a Test of Millisecond Magnetar Connection by Nicholl, M., Williams, P. K. G., Berger, E., Villar, V. A., Alexander, K. D., Eftekhari, T., Metzger, B. D.

“…The localization of the repeating fast radio burst (FRB) 121102 to a low-metallicity dwarf galaxy at z = 0.193, and its association with a luminous quiescent…”
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Radio Monitoring of the Tidal Disruption Event Swift J164449.3+573451. IV. Continued Fading and Non-relativistic Expansion by Cendes, Y., Eftekhari, T., Berger, E., Polisensky, E.

“…We present continued radio and X-ray observations of the previously relativistic tidal disruption event (TDE) Swift J164449.3+573451 (Sw 1644+57) extending to…”
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Bayesian constraints on the global 21-cm signal from the Cosmic Dawn by Bernardi, G., Zwart, J. T. L., Price, D., Greenhill, L. J., Mesinger, A., Dowell, J., Eftekhari, T., Ellingson, S. W., Kocz, J., Schinzel, F.

“…The birth of the first luminous sources and the ensuing epoch of reionization are best studied via the redshifted 21-cm emission line, the signature of the…”
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An Embedded X-Ray Source Shines through the Aspherical AT 2018cow: Revealing the Inner Workings of the Most Luminous Fast-evolving Optical Transients by Margutti, R., Metzger, B. D., Chornock, R., Vurm, I., Roth, N., Grefenstette, B. W., Savchenko, V., Cartier, R., Steiner, J. F., Terreran, G., Margalit, B., Migliori, G., Milisavljevic, D., Alexander, K. D., Bietenholz, M., Blanchard, P. K., Bozzo, E., Brethauer, D., Chilingarian, I. V., Coppejans, D. L., Ducci, L., Ferrigno, C., Fong, W., Götz, D., Guidorzi, C., Hajela, A., Hurley, K., Kuulkers, E., Laurent, P., Mereghetti, S., Nicholl, M., Patnaude, D., Ubertini, P., Banovetz, J., Bartel, N., Berger, E., Coughlin, E. R., Eftekhari, T., Frederiks, D. D., Kozlova, A. V., Laskar, T., Svinkin, D. S., Drout, M. R., MacFadyen, A., Paterson, K.

“…We present the first extensive radio to γ-ray observations of a fast-rising blue optical transient, AT 2018cow, over its first ∼100 days. AT 2018cow rose over…”
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Radio Observations of an Ordinary Outflow from the Tidal Disruption Event AT2019dsg by Cendes, Y., Alexander, K. D., Berger, E., Eftekhari, T., Williams, P. K. G., Chornock, R.

“…Abstract We present detailed radio observations of the tidal disruption event (TDE) AT2019dsg, obtained with the Karl G. Jansky Very Large Array (VLA) and the…”
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Evidence for X-Ray Emission in Excess to the Jet-afterglow Decay 3.5 yr after the Binary Neutron Star Merger GW 170817: A New Emission Component by Hajela, A., Margutti, R., Bright, J. S., Alexander, K. D., Metzger, B. D., Nedora, V., Kathirgamaraju, A., Margalit, B., Radice, D., Guidorzi, C., Berger, E., MacFadyen, A., Giannios, D., Chornock, R., Heywood, I., Sironi, L., Gottlieb, O., Coppejans, D., Laskar, T., Cendes, Y., Duran, R. Barniol, Eftekhari, T., Fong, W., McDowell, A., Nicholl, M., Xie, X., Zrake, J., Bernuzzi, S., Broekgaarden, F. S., Kilpatrick, C. D., Terreran, G., Villar, V. A., Blanchard, P. K., Gomez, S., Hosseinzadeh, G., Matthews, D. J., Rastinejad, J. C.

“…Abstract For the first ∼3 yrs after the binary neutron star merger event GW 170817, the radio and X-ray radiation has been dominated by emission from a…”
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The tidal disruption event AT2017eqx: spectroscopic evolution from hydrogen rich to poor suggests an atmosphere and outflow by Nicholl, M, Blanchard, P K, Berger, E, Gomez, S, Margutti, R, Alexander, K D, Guillochon, J, Leja, J, Chornock, R, Snios, B, Auchettl, K, Bruce, A G, Challis, P, D’Orazio, D J, Drout, M R, Eftekhari, T, Foley, R J, Graur, O, Kilpatrick, C D, Lawrence, A, Piro, A L, Rojas-Bravo, C, Ross, N P, Short, P, Smartt, S J, Smith, K W, Stalder, B

“…ABSTRACT We present and analyse a new tidal disruption event (TDE), AT2017eqx at redshift z = 0.1089, discovered by Pan-STARRS and ATLAS. The position of the…”
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The Jet Opening Angle and Event Rate Distributions of Short Gamma-Ray Bursts from Late-time X-Ray Afterglows by Rouco Escorial, A., Fong, W., Berger, E., Laskar, T., Margutti, R., Schroeder, G., Rastinejad, J. C., Cornish, D., Popp, S., Lally, M., Nugent, A. E., Paterson, K., Metzger, B. D., Chornock, R., Alexander, K., Cendes, Y., Eftekhari, T.

“…Abstract We present a comprehensive study of 29 short gamma-ray bursts (SGRBs) observed ≈0.8−60 days postburst using Chandra and XMM-Newton. We provide the…”
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Late-time Radio and Millimeter Observations of Superluminous Supernovae and Long Gamma-Ray Bursts: Implications for Central Engines, Fast Radio Bursts, and Obscured Star Formation by Eftekhari, T., Margalit, B., Omand, C. M. B., Berger, E., Blanchard, P. K., Demorest, P., Metzger, B. D., Murase, K., Nicholl, M., Villar, V. A., Williams, P. K. G., Alexander, K. D., Chatterjee, S., Coppejans, D. L., Cordes, J. M., Gomez, S., Hosseinzadeh, G., Hsu, B., Kashiyama, K., Margutti, R., Yin, Y.

“…Abstract We present the largest and deepest late-time radio and millimeter survey to date of superluminous supernovae (SLSNe) and long-duration gamma-ray…”
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Late-time X-Ray Observations of the Jetted Tidal Disruption Event AT2022cmc: The Relativistic Jet Shuts Off by Eftekhari, T., Tchekhovskoy, A., Alexander, K. D., Berger, E., Chornock, R., Laskar, T., Margutti, R., Yao, Y., Cendes, Y., Gomez, S., Hajela, A., Pasham, D. R.

“…Abstract The tidal disruption event (TDE) AT2022cmc represents the fourth known example of a relativistic jet produced by the tidal disruption of a stray star,…”
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Extragalactic Millimeter Transients in the Era of Next-generation CMB Surveys by Eftekhari, T., Berger, E., Metzger, B. D., Laskar, T., Villar, V. A., Alexander, K. D., Holder, G. P., Vieira, J. D., Whitehorn, N., Williams, P. K. G.

“…Abstract The next generation of wide-field cosmic microwave background (CMB) surveys are uniquely poised to open a new window into time-domain astronomy in the…”
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Associating Fast Radio Bursts with Extragalactic Radio Sources: General Methodology and a Search for a Counterpart to FRB 170107 by Eftekhari, T., Berger, E., Williams, P. K. G., Blanchard, P. K.

“…The discovery of a repeating fast radio burst (FRB) has led to the first precise localization, an association with a dwarf galaxy, and the identification of a…”
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A Radio Study of Persistent Radio Sources in Nearby Dwarf Galaxies: Implications for Fast Radio Bursts by Dong, Y., Eftekhari, T., Fong, W., Bhandari, S., Berger, E., Ould-Boukattine, O. S., Hessels, J. W. T., Sridhar, N., Reines, A., Margalit, B., Darling, J., Gordon, A. C., Greene, J. E., Kilpatrick, C. D., Marcote, B., Metzger, B. D., Nimmo, K., Nugent, A. E., Paragi, Z., Williams, P. K. G.

“…Abstract We present 1–12 GHz Karl G. Jansky Very Large Array observations of nine off-nuclear persistent radio sources (PRSs) in nearby ( z ≲ 0.055) dwarf…”
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Design and characterization of the Large-aperture Experiment to Detect the Dark Age (LEDA) radiometer systems by Price, D C, Greenhill, L J, Fialkov, A, Bernardi, G, Garsden, H, Barsdell, B R, Kocz, J, Anderson, M M, Bourke, S A, Craig, J, Dexter, M R, Dowell, J, Eastwood, M W, Eftekhari, T, Ellingson, S W, Hallinan, G, Hartman, J M, Kimberk, R, Lazio, T Joseph W, Leiker, S, MacMahon, D, Monroe, R, Schinzel, F, Taylor, G B, Tong, E, Werthimer, D, Woody, D P

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The Broadband Counterpart of the Short GRB 200522A at z = 0.5536: A Luminous Kilonova or a Collimated Outflow with a Reverse Shock? by Fong, W., Laskar, T., Rastinejad, J., Escorial, A. Rouco, Schroeder, G., Barnes, J., Kilpatrick, C. D., Paterson, K., Berger, E., Metzger, B. D., Dong, Y., Nugent, A. E., Strausbaugh, R., Blanchard, P. K., Goyal, A., Cucchiara, A., Terreran, G., Alexander, K. D., Eftekhari, T., Fryer, C., Margalit, B., Margutti, R., Nicholl, M.

“…We present the discovery of the radio afterglow and near-infrared (NIR) counterpart of the Swift short gamma-ray burst (GRB) GRB 200522A, located at a small…”
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Wandering Massive Black Holes or Analogs of the First Repeating Fast Radio Burst? by Eftekhari, T., Berger, E., Margalit, B., Metzger, B. D., Williams, P. K. G.

“…The discovery of a persistent radio source coincident with the first repeating fast radio burst, FRB 121102, and offset from the center of its dwarf host…”
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An X-Ray Census of Fast Radio Burst Host Galaxies: Constraints on Active Galactic Nuclei and X-Ray Counterparts by Eftekhari, T., Fong, W., Gordon, A. C., Sridhar, N., Kilpatrick, C. D., Bhandari, S., Deller, A. T., Dong, Y., Rouco Escorial, A. , Heintz, K. E., Leja, J., Margalit, B., Metzger, B. D., Pearlman, A. B., Prochaska, J. X., Ryder, S. D., Scholz, P., Shannon, R. M., Tejos, N.

“…Abstract We present the first X-ray census of fast radio burst (FRB) host galaxies to conduct the deepest search for active galactic nuclei (AGN) and X-ray…”
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PULSAR OBSERVATIONS USING THE FIRST STATION OF THE LONG WAVELENGTH ARRAY AND THE LWA PULSAR DATA ARCHIVE by Stovall, K., Ray, P. S., Blythe, J., Dowell, J., Eftekhari, T., Garcia, A., Lazio, T. J. W., McCrackan, M., Schinzel, F. K., Taylor, G. B.

“…ABSTRACT We present initial pulsar results from the first station of the Long Wavelength Array (LWA1) obtained during the commissioning period of LWA1 and in…”
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