Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Michael Lundquist"'
Autor:
Manisha Shrestha, Jeniveve Pearson, Samuel Wyatt, David J. Sand, Griffin Hosseinzadeh, K. Azalee Bostroem, Jennifer E. Andrews, Yize Dong, Emily Hoang, Daryl Janzen, Jacob E. Jencson, Michael Lundquist, Darshana Mehta, Nicolás Meza Retamal, Stefano Valenti, Jillian C. Rastinejad, Phil Daly, Dallan Porter, Joannah Hinz, Skyler Self, Benjamin Weiner, G. Grant Williams, Daichi Hiramatsu, D. Andrew Howell, Curtis McCully, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran, Megan Newsome, Joseph Farah, Koichi Itagaki, Saurabh W. Jha, Lindsey Kwok, Nathan Smith, Michaela Schwab, Jeonghee Rho, Yi Yang
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 2, p 247 (2024)
We present high-cadence photometric and spectroscopic observations of SN 2023axu, a classical Type II supernova with an absolute V -band peak magnitude of –17.2 ± 0.1 mag. SN 2023axu was discovered by the Distance Less Than 40 Mpc (DLT40) survey w
Externí odkaz:
https://doaj.org/article/7ed9ecc773ba4825af2cb23e555f465c
Autor:
K. Azalee Bostroem, Jeniveve Pearson, Manisha Shrestha, David J. Sand, Stefano Valenti, Saurabh W. Jha, Jennifer E. Andrews, Nathan Smith, Giacomo Terreran, Elizabeth Green, Yize Dong, Michael Lundquist, Joshua Haislip, Emily T. Hoang, Griffin Hosseinzadeh, Daryl Janzen, Jacob E. Jencson, Vladimir Kouprianov, Emmy Paraskeva, Nicolas E. Meza Retamal, Daniel E. Reichart, Iair Arcavi, Alceste Z. Bonanos, Michael W. Coughlin, Ross Dobson, Joseph Farah, Lluís Galbany, Claudia Gutiérrez, Suzanne Hawley, Leslie Hebb, Daichi Hiramatsu, D. Andrew Howell, Takashi Iijima, Ilya Ilyin, Kiran Jhass, Curtis McCully, Sean Moran, Brett M. Morris, Alessandra C. Mura, Tomás E. Müller-Bravo, James Munday, Megan Newsome, Maria Th. Pabst, Paolo Ochner, Estefania Padilla Gonzalez, Andrea Pastorello, Craig Pellegrino, Lara Piscarreta, Aravind P. Ravi, Andrea Reguitti, Laura Salo, József Vinkó, Kellie de Vos, J. C. Wheeler, G. Grant Williams, Samuel Wyatt
Publikováno v:
The Astrophysical Journal Letters, Vol 956, Iss 1, p L5 (2023)
We present the optical spectroscopic evolution of SN 2023ixf seen in subnight cadence spectra from 1.18 to 15 days after explosion. We identify high-ionization emission features, signatures of interaction with material surrounding the progenitor star
Externí odkaz:
https://doaj.org/article/4770225259c04e39bbbf9c2988c9bbb1
Autor:
K. Azalee Bostroem, Luc Dessart, D. John Hillier, Michael Lundquist, Jennifer E. Andrews, David J. Sand, Yize Dong, Stefano Valenti, Joshua Haislip, Emily T. Hoang, Griffin Hosseinzadeh, Daryl Janzen, Jacob E. Jencson, Saurabh W. Jha, Vladimir Kouprianov, Jeniveve Pearson, Nicolas E. Meza Retamal, Daniel E. Reichart, Manisha Shrestha, Christopher Ashall, E. Baron, Peter J. Brown, James M. DerKacy, Joseph Farah, Lluís Galbany, J. I. González Hernández, Elizabeth Green, Peter Hoeflich, D. Andrew Howell, Lindsey A. Kwok, Curtis McCully, Tomás E. Müller-Bravo, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Jeonghee Rho, Micalyn Rowe, Michaela Schwab, Melissa Shahbandeh, Nathan Smith, Jay Strader, Giacomo Terreran, Schuyler D. Van Dyk, Samuel Wyatt
Publikováno v:
The Astrophysical Journal Letters, Vol 953, Iss 2, p L18 (2023)
We present five far- and near-ultraviolet spectra of the Type II plateau supernova, SN 2022acko, obtained 5, 6, 7, 19, and 21 days after explosion, all observed with the Hubble Space Telescope/Space Telescope Imaging Spectrograph. The first three epo
Externí odkaz:
https://doaj.org/article/cfb113867e64459eae9343a69eb4d3f2
Autor:
Griffin Hosseinzadeh, Joseph Farah, Manisha Shrestha, David J. Sand, Yize Dong, Peter J. Brown, K. Azalee Bostroem, Stefano Valenti, Saurabh W. Jha, Jennifer E. Andrews, Iair Arcavi, Joshua Haislip, Daichi Hiramatsu, Emily Hoang, D. Andrew Howell, Daryl Janzen, Jacob E. Jencson, Vladimir Kouprianov, Michael Lundquist, Curtis McCully, Nicolas E. Meza Retamal, Maryam Modjaz, Megan Newsome, Estefania Padilla Gonzalez, Jeniveve Pearson, Craig Pellegrino, Aravind P. Ravi, Daniel E. Reichart, Nathan Smith, Giacomo Terreran, József Vinkó
Publikováno v:
The Astrophysical Journal Letters, Vol 953, Iss 1, p L16 (2023)
We present the densely sampled early light curve of the Type II supernova (SN) 2023ixf, first observed within hours of explosion in the nearby Pinwheel Galaxy (Messier 101; 6.7 Mpc). Comparing these data to recently updated models of shock-cooling em
Externí odkaz:
https://doaj.org/article/c491f58589ee486da2c5864eb6bb7403
Autor:
Griffin Hosseinzadeh, David J. Sand, Sumit K. Sarbadhicary, Stuart D. Ryder, Saurabh W. Jha, Yize Dong, K. Azalee Bostroem, Jennifer E. Andrews, Emily Hoang, Daryl Janzen, Jacob E. Jencson, Michael Lundquist, Nicolas E. Meza Retamal, Jeniveve Pearson, Manisha Shrestha, Stefano Valenti, Samuel Wyatt, Joseph Farah, D. Andrew Howell, Curtis McCully, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran, Muzoun Alzaabi, Elizabeth M. Green, Jessica L. Gurney, Peter A. Milne, Kaycee I. Ridenhour, Nathan Smith, Paulina Soto Robles, Lindsey A. Kwok, Michaela Schwab, Mariusz Gromadzki, David A. H. Buckley, Koichi Itagaki, Daichi Hiramatsu, Laura Chomiuk, Peter Lundqvist, Joshua Haislip, Vladimir Kouprianov, Daniel E. Reichart
Publikováno v:
The Astrophysical Journal Letters, Vol 953, Iss 1, p L15 (2023)
We present very early photometric and spectroscopic observations of the Type Ia supernova (SN Ia) 2023bee, starting about 8 hr after the explosion, which reveal a strong excess in the optical and nearest UV ( U and UVW1 ) bands during the first sever
Externí odkaz:
https://doaj.org/article/ef9eecffc1684508b1e6db397a766bd8
Autor:
Jacob E. Jencson, Jeniveve Pearson, Emma R. Beasor, Ryan M. Lau, Jennifer E. Andrews, K. Azalee Bostroem, Yize Dong, Michael Engesser, Sebastian Gomez, Muryel Guolo, Emily Hoang, Griffin Hosseinzadeh, Saurabh W. Jha, Viraj Karambelkar, Mansi M. Kasliwal, Michael Lundquist, Nicolas E. Meza Retamal, Armin Rest, David J. Sand, Melissa Shahbandeh, Manisha Shrestha, Nathan Smith, Jay Strader, Stefano Valenti, Qinan Wang, Yossef Zenati
Publikováno v:
The Astrophysical Journal Letters, Vol 952, Iss 2, p L30 (2023)
We analyze pre-explosion near- and mid-infrared (IR) imaging of the site of SN 2023ixf in the nearby spiral galaxy M101 and characterize the candidate progenitor star. The star displays compelling evidence of variability with a possible period of ≈
Externí odkaz:
https://doaj.org/article/b62ee01868714c55b069dcc5bee76209
Autor:
Yize Dong, David J. Sand, Stefano Valenti, K. Azalee Bostroem, Jennifer E. Andrews, Griffin Hosseinzadeh, Emily Hoang, Daryl Janzen, Jacob E. Jencson, Michael Lundquist, Nicolas E. Meza Retamal, Jeniveve Pearson, Manisha Shrestha, Joshua Haislip, Vladimir Kouprianov, Daniel E. Reichart
Publikováno v:
The Astrophysical Journal, Vol 957, Iss 1, p 28 (2023)
We perform a comprehensive search for optical precursor emission at the position of SN 2023ixf using data from the DLT40, ZTF, and ATLAS surveys. By comparing the current data set with precursor outburst hydrodynamical model light curves, we find tha
Externí odkaz:
https://doaj.org/article/957ceda2ff364637b1f7d89bd023e0e8
Autor:
Matthew Brown, John O'Meara, Max Broadheim, Lucas Furhman, Chien-Hsiu Lee, Michael Lundquist, Jeff A. Mader, Tyler Tucker, Josh Walawender
Publikováno v:
Software and Cyberinfrastructure for Astronomy VII.
Autor:
Yize Dong, Stefano Valenti, Abigail Polin, Aoife Boyle, Andreas Flörs, Christian Vogl, Wolfgang E. Kerzendorf, David J. Sand, Saurabh W. Jha, Łukasz Wyrzykowski, K. Azalee Bostroem, Jeniveve Pearson, Curtis McCully, Jennifer E. Andrews, Stefano Benetti, Stéphane Blondin, L. Galbany, Mariusz Gromadzki, Griffin Hosseinzadeh, D. Andrew Howell, Cosimo Inserra, Jacob E. Jencson, Michael Lundquist, J. D. Lyman, Mark Magee, Kate Maguire, Nicolas Meza, Shubham Srivastav, Stefan Taubenberger, J. H. Terwel, Samuel Wyatt, D. R. Young
Publikováno v:
Astrophys.J.
Astrophys.J., 2022, 934 (2), pp.102. ⟨10.3847/1538-4357/ac75eb⟩
The astrophysical journal / 1 934(2), 102 (2022). doi:10.3847/1538-4357/ac75eb
Astrophys.J., 2022, 934 (2), pp.102. ⟨10.3847/1538-4357/ac75eb⟩
The astrophysical journal / 1 934(2), 102 (2022). doi:10.3847/1538-4357/ac75eb
Dong et al.
A thermonuclear explosion triggered by a He-shell detonation on a carbon–oxygen white-dwarf core has been predicted to have strong UV line blanketing at early times due to the iron-group elements produced during He-shell burning. W
A thermonuclear explosion triggered by a He-shell detonation on a carbon–oxygen white-dwarf core has been predicted to have strong UV line blanketing at early times due to the iron-group elements produced during He-shell burning. W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c1d8776a839221644a03554a42fa450
https://orca.cardiff.ac.uk/id/eprint/151548/1/pdf.pdf
https://orca.cardiff.ac.uk/id/eprint/151548/1/pdf.pdf
Autor:
Igor Andreoni, Michael Coughlin, Daniel Perley, Yuhan Yao, Wenbin Lu, S. Cenko, Harsh Kumar, Shreya Anand, Anna Ho, Mansi Kasliwal, Antonio de Ugarte Postigo, Ana Sagués-Carracedo, Steve Schulze, Shri Kulkarni, Jesper Sollerman, Nial Tanvir, Armin Rest, Tomás Ahumada, G. Anupama, Katie Auchettl, Sudhanshu Barway, Eric Bellm, Varun Bhalerao, Joshua Bloom, Michael Bremer, Mattia Bulla, Eric Burns, Sergio Campana, Poonam Chandra, Panos Charalampopoulos, Jeff Cooke, Valerio D'Elia, Kaustav Das, Dougal Dobie, José Agüí Fernández, James Freeburn, Christoffer Fremling, Suvi Gezari, Matthew Graham, Erica Hammerstein, Luca Izzo, David Alexander Kann, David Kaplan, Viraj Karambelkar, Erik Kool, Melanie Krips, Russ Laher, Giorgos Leloudas, Andrew Levan, Michael Lundquist, Ashish Mahabal, Michael Medford, M. Miller, Anais Moller, Kunal Mooley, A Nayana, Guy Nir, Peter Pang, Emmy Paraskeva, Richard Perley, Glen Petitpas, Miika Pursiainen, Vikram Ravi, Ryan Ridden-Harper, Reed Riddle, Mickael Rigault, Antonio Rodriguez, Benjamin Rusholme, Yashvi Sharma, I. Smith, Jean Somalwar, Christina Thöne, Francisco Valdes, Jan van Roestel, Susanna Vergani, Qinan Wang, Jielai Zhang
Tidal disruption events (TDEs) are bursts of electromagnetic energy released when supermassive black holes at the center of galaxies violently disrupt stars that pass too close. TDEs provide a new window to study accretion onto supermassive black hol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd0c5688cdb9ff526f50a3f3507ea93c
https://doi.org/10.21203/rs.3.rs-1527213/v1
https://doi.org/10.21203/rs.3.rs-1527213/v1