A Radio Flare in the Long-lived Afterglow of the Distant Short GRB 210726A: Energy Injection or a Reverse Shock from Shell Collisions?

Authors: Genevieve Schroeder, Lauren Rhodes, Tanmoy Laskar, Anya Nugent, Alicia Rouco Escorial, Jillian C. Rastinejad, Wen-fai Fong, Alexander J. van der Horst, Péter Veres, Kate D. Alexander, Alex Andersson, Edo Berger, Peter K. Blanchard, Sarah Chastain, Lise Christensen, Rob Fender, David A. Green, Paul Groot, Ian Heywood, Assaf Horesh, Luca Izzo, Charles D. Kilpatrick, Elmar Körding, Amy Lien, Daniele B. Malesani, Vanessa McBride, Kunal Mooley, Antonia Rowlinson, Huei Sears, Ben Stappers, Nial Tanvir, Susanna D. Vergani, Ralph A. M. J. Wijers, David Williams-Baldwin, Patrick Woudt

Source: The Astrophysical Journal, Vol 970, Iss 2, p 139 (2024)

Subject Terms: Gamma-ray bursts, High energy astrophysics, Radio astronomy, Time domain astronomy, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/06fbb0f1beea4b7591cdebceeb35d7a0

The Peculiar Radio Evolution of the Tidal Disruption Event ASASSN-19bt

Authors: Collin T. Christy, Kate D. Alexander, Raffaella Margutti, Mark Wieringa, Yvette Cendes, Ryan Chornock, Tanmoy Laskar, Edo Berger, Michael Bietenholz, Deanne L. Coppejans, Fabio De Colle, Tarraneh Eftekhari, Thomas W.-S. Holoien, Tatsuya Matsumoto, James C. A. Miller-Jones, Enrico Ramirez-Ruiz, Richard Saxton, Sjoert van Velzen

Source: The Astrophysical Journal, Vol 974, Iss 1, p 18 (2024)

Subject Terms: Tidal disruption, Black hole physics, Radio transient sources, Jets, Accretion, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/8d9201710e5c47dfa11c2e0616fb3014

Limit on Supernova Emission in the Brightest Gamma-Ray Burst, GRB 221009A

Authors: Manisha Shrestha, David J. Sand, Kate D. Alexander, K. Azalee Bostroem, Griffin Hosseinzadeh, Jeniveve Pearson, Mojgan Aghakhanloo, József Vinkó, Jennifer E. Andrews, Jacob E. Jencson, M. J. Lundquist, Samuel Wyatt, D. Andrew Howell, Curtis McCully, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran, Daichi Hiramatsu, Megan Newsome, Joseph Farah, Saurabh W. Jha, Nathan Smith, J. Craig Wheeler, Clara Martínez-Vázquez, Julio A. Carballo-Bello, Alex Drlica-Wagner, David J. James, Burçin Mutlu-Pakdil, Guy S. Stringfellow, Joanna D. Sakowska, Noelia E. D. Noël, Clécio R. Bom, Kyler Kuehn

Source: The Astrophysical Journal Letters, Vol 946, Iss 1, p L25 (2023)

Subject Terms: Gamma-ray bursts, Supernovae, Type Ic supernovae, Photometry, Spectroscopy, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/5bb1b00de35c4d388a4309c3c6fd49f9

Scary Barbie: An Extremely Energetic, Long-duration Tidal Disruption Event Candidate without a Detected Host Galaxy at z = 0.995

Authors: Bhagya M. Subrayan, Dan Milisavljevic, Ryan Chornock, Raffaella Margutti, Kate D. Alexander, Vandana Ramakrishnan, Paul C. Duffell, Danielle A. Dickinson, Kyoung-Soo Lee, Dimitrios Giannios, Geoffery Lentner, Mark Linvill, Braden Garretson, Matthew J. Graham, Daniel Stern, Daniel Brethauer, Tien Duong, Wynn Jacobson-Galán, Natalie LeBaron, David Matthews, Huei Sears, Padma Venkatraman

Source: The Astrophysical Journal Letters, Vol 948, Iss 2, p L19 (2023)

Subject Terms: Active galactic nuclei, High energy astrophysics, Transient detection, All-sky cameras, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/5ede8cdd1c0c47fe9440cf8afbab939b

The Radio to GeV Afterglow of GRB 221009A

Authors: Tanmoy Laskar, Kate D. Alexander, Raffaella Margutti, Tarraneh Eftekhari, Ryan Chornock, Edo Berger, Yvette Cendes, Anne Duerr, Daniel A. Perley, Maria Edvige Ravasio, Ryo Yamazaki, Eliot H. Ayache, Thomas Barclay, Rodolfo Barniol Duran, Shivani Bhandari, Daniel Brethauer, Collin T. Christy, Deanne L. Coppejans, Paul Duffell, Wen-fai Fong, Andreja Gomboc, Cristiano Guidorzi, Jamie A. Kennea, Shiho Kobayashi, Andrew Levan, Andrei P. Lobanov, Brian D. Metzger, Eduardo Ros, Genevieve Schroeder, P. K. G. Williams

Source: The Astrophysical Journal Letters, Vol 946, Iss 1, p L23 (2023)

Subject Terms: High energy astrophysics, Gamma-ray bursts, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/a685bea0c1264ca0ba1b4cab5853f084

Millimeter Observations of the Type II SN 2023ixf: Constraints on the Proximate Circumstellar Medium

Authors: Edo Berger, Garrett K. Keating, Raffaella Margutti, Keiichi Maeda, Kate D. Alexander, Yvette Cendes, Tarraneh Eftekhari, Mark Gurwell, Daichi Hiramatsu, Anna Y. Q. Ho, Tanmoy Laskar, Ramprasad Rao, Peter K. G. Williams

Source: The Astrophysical Journal Letters, Vol 951, Iss 2, p L31 (2023)

Subject Terms: Supernovae, Type II supernovae, Core-collapse supernovae, Massive stars, Stellar mass loss, Circumstellar matter, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/a29d752f3c61408eba53368280b903ad

A Reverse Shock in GRB 181201A.

Authors: Tanmoy Laskar, Hendrik van Eerten, Patricia Schady, C. G. Mundell, Kate D. Alexander, Rodolfo Barniol Duran, Edo Berger, J. Bolmer, Ryan Chornock, Deanne L. Coppejans, Wen-fai Fong, Andreja Gomboc, Núria Jordana-Mitjans, Shiho Kobayashi, Raffaella Margutti, Karl M. Menten, Re’em Sari, Ryo Yamazaki, V. M. Lipunov, E. Gorbovskoy

Source: Astrophysical Journal; 10/20/2019, Vol. 884 Issue 2, p1-1, 1p

Subject Terms: MONTE Carlo method, GAMMA ray bursts, MARKOV chain Monte Carlo, SPECTRAL energy distribution, SYNCHROTRON radiation

ALMA Detection of a Linearly Polarized Reverse Shock in GRB 190114C.

Authors: Tanmoy Laskar, Kate D. Alexander, Ramandeep Gill, Jonathan Granot, Edo Berger, C. G. Mundell, Rodolfo Barniol Duran, J. Bolmer, Paul Duffell, Hendrik van Eerten, Wen-fai Fong, Shiho Kobayashi, Raffaella Margutti, Patricia Schady

Source: Astrophysical Journal Letters; 6/10/2019, Vol. 878 Issue 1, p1-1, 1p

One Thousand Days of SN2015bn: HST Imaging Shows a Light Curve Flattening Consistent with Magnetar Predictions.

Authors: Matt Nicholl, Peter K. Blanchard, Edo Berger, Kate D. Alexander, Brian D. Metzger, Kornpob Bhirombhakdi, Ryan Chornock, Deanne Coppejans, Sebastian Gomez, Ben Margalit, Raffaella Margutti, Giacomo Terreran

Source: Astrophysical Journal Letters; 10/20/2018, Vol. 866 Issue 2, p1-1, 1p

First ALMA Light Curve Constrains Refreshed Reverse Shocks and Jet Magnetization in GRB 161219B.

Authors: Tanmoy Laskar^1,2,3, Kate D. Alexander⁴, Edo Berger⁴, Cristiano Guidorzi⁵, Raffaella Margutti⁶, Wen-fai Fong^6,7, Charles D. Kilpatrick⁸, Peter Milne⁹, Maria R. Drout^10,11, C. G. Mundell¹², Shiho Kobayashi¹³, Ragnhild Lunnan^14,15, Rodolfo Barniol Duran¹⁶, Karl M. Menten¹⁷, Kunihito Ioka¹⁸, Peter K. G. Williams⁴

Source: Astrophysical Journal. 8/1/2018, Vol. 862 Issue 2, p1-1. 1p.

Subject Terms: *GAMMA ray bursts, *GAMMA ray astronomy, *STARQUAKES, *AFTERGLOW (Physics), *LUMINESCENCE

A VLA Study of High-redshift GRBs. II. The Complex Radio Afterglow of GRB 140304A: Shell Collisions and Two Reverse Shocks.

Authors: Tanmoy Laskar, Edo Berger, Raffaella Margutti, B. Ashley Zauderer, Peter K. G. Williams, Wen-fai Fong, Re’em Sari, Kate D. Alexander, Atish Kamble

Source: Astrophysical Journal; 6/1/2018, Vol. 859 Issue 2, p1-1, 1p

Subject Terms: REDSHIFT, SOLAR radio emission, SCINTILLATION of stars, KINETIC energy, INTERSTELLAR medium

A REVERSE SHOCK IN GRB 160509A.

Authors: Tanmoy Laskar^1,2, Kate D. Alexander³, Edo Berger³, Wen-fai Fong^4,5, Raffaella Margutti^6,7, Isaac Shivvers², Peter K. G. Williams³, Drejc Kopač⁸, Shiho Kobayashi⁹, Carole Mundell¹⁰, Andreja Gomboc¹¹, WeiKang Zheng², Karl M. Menten¹², Melissa L. Graham^2,13, Alexei V. Filippenko²

Source: Astrophysical Journal. 12/10/2016, Vol. 833 Issue 1, p1-1. 1p.

Subject Terms: *GAMMA ray bursts, *AFTERGLOW (Physics), *ELECTRIC discharges, *X-ray absorption, *ELECTROMAGNETIC wave absorption, *GAMMA ray astronomy

A NEW MODEL FOR THE RADIO EMISSION FROM SN 1994I AND AN ASSOCIATED SEARCH FOR RADIO TRANSIENTS IN M51.

Authors: Kate D. Alexander¹ kalexander@cfa.harvard.edu, Alicia M. Soderberg¹, Laura B. Chomiuk^1,2

Source: Astrophysical Journal. 6/10/2015, Vol. 806 Issue 1, p1-1. 1p.

Subject Terms: *SUPERNOVAE, *SOLAR radio emission, *PROGENITOR cells, *VERY large array telescopes, *LUMINOSITY

Identifying Tidal Disruption Events with an Expansion of the FLEET Machine-learning Algorithm

Authors: Sebastian Gomez, V. Ashley Villar, Edo Berger, Suvi Gezari, Sjoert van Velzen, Matt Nicholl, Peter K. Blanchard, Kate. D. Alexander

Source: The Astrophysical Journal, Vol 949, Iss 2, p 113 (2023)

Subject Terms: Black hole physics, Supernovae, Surveys, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/df3dbe3942204be9a231104f66bcb1a9