Search Results - "Williamson, Marc"

THE DEPENDENCE OF SUBHALO ABUNDANCE ON HALO CONCENTRATION by Mao, Yao-Yuan, Williamson, Marc, Wechsler, Risa H.

“…ABSTRACT Hierarchical structure formation implies that the number of subhalos within a dark matter halo depends not only on halo mass, but also on the…”
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ASASSN-14lp: two possible solutions for the observed ultraviolet suppression by Barna, Barnabas, Pereira, Talytha, Taubenberger, Stefan, Magee, Mark, Kromer, Markus, Kerzendorf, Wolfgang, Vogl, Christian, Williamson, Marc E, Flörs, Andreas, Noebauer, Ulrich M, Foley, Ryan J, Sasdelli, Michele, Hillebrandt, Wolfgang

“…ABSTRACT We test the adequacy of ultraviolet (UV) spectra for characterizing the outer structure of Type Ia supernova (SN) ejecta. For this purpose, we perform…”
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1991T-Like Type Ia Supernovae as an Extension of the Normal Population by O’Brien, John T., Kerzendorf, Wolfgang E., Fullard, Andrew, Pakmor, Rüdiger, Buchner, Johannes, Vogl, Christian, Chen, Nutan, van der Smagt, Patrick, Williamson, Marc, Singhal, Jaladh

“…Abstract Type Ia supernovae (SNe) remain poorly understood despite decades of investigation. Massive computationally intensive hydrodynamic simulations have…”
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Ultraviolet Spectroscopy and TARDIS Models of the Broad-lined Type Ic Supernova 2014ad by Kwok, Lindsey A., Williamson, Marc, Jha, Saurabh W., Modjaz, Maryam, Camacho-Neves, Yssavo, Foley, Ryan J., Garnavich, Peter, Maeda, Keiichi, Milisavljevic, Dan, Pandya, Viraj, Dai, Mi, McCully, Curtis, Pritchard, Tyler, Singhal, Jaladh

“…Abstract Few published ultraviolet (UV) spectra exist for stripped-envelope supernovae and none to date for broad-lined Type Ic supernovae (SNe Ic-bl). These…”
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Early-time Ultraviolet Spectroscopy and Optical Follow-up Observations of the Type IIP Supernova 2021yja by Vasylyev, Sergiy S., Filippenko, Alexei V., Vogl, Christian, Brink, Thomas G., Brown, Peter J., Jaeger, Thomas de, Matheson, Thomas, Gal-Yam, Avishay, Mazzali, Paolo A., Modjaz, Maryam, Patra, Kishore C., Rowe, Micalyn, Smith, Nathan, Van Dyk, Schuyler D., Williamson, Marc, Yang, Yi, Zheng, WeiKang, deGraw, Asia, Fox, Ori D., Gates, Elinor L., Jennings, Connor, Rich, R. Michael

“…Abstract We present three epochs of early-time ultraviolet (UV) and optical HST/STIS spectroscopy of the young, nearby Type IIP supernova (SN) 2021yja. We…”
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Over 500 Days in the Life of the Photosphere of the Type Iax Supernova SN 2014dt by Camacho-Neves, Yssavo, Jha, Saurabh W., Barna, Barnabas, Dai, Mi, Filippenko, Alexei V., Foley, Ryan J., Hosseinzadeh, Griffin, Howell, D. Andrew, Johansson, Joel, Kelly, Patrick L., Kerzendorf, Wolfgang E., Kwok, Lindsey A., Larison, Conor, Magee, Mark R., McCully, Curtis, O’Brien, John T., Pan, Yen-Chen, Pandya, Viraj, Singhal, Jaladh, Stahl, Benjamin E., Szalai, Tamás, Wieber, Meredith, Williamson, Marc

“…Abstract Type Iax supernovae (SNe Iax) are the largest known class of peculiar white dwarf SNe, distinct from normal Type Ia supernovae (SNe Ia). The unique…”
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SN 2019ewu: A Peculiar Supernova with Early Strong Carbon and Weak Oxygen Features from a New Sample of Young SN Ic Spectra by Williamson, Marc, Vogl, Christian, Modjaz, Maryam, Kerzendorf, Wolfgang, Singhal, Jaladh, Boland, Teresa, Burke, Jamison, Chen, Zhihao, Hiramatsu, Daichi, Galbany, Lluís, Gonzalez, Estefania Padilla, Howell, D. Andrew, Jha, Saurabh W., Kwok, Lindsey A., McCully, Curtis, Newsome, Megan, Pellegrino, Craig, Rho, Jeonghee, Terreran, Giacomo, Wang, Xiaofeng

“…Abstract With the advent of high-cadence, all-sky automated surveys, supernovae (SNe) are now discovered closer than ever to their dates of explosion. However,…”
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The Exotic Type Ic Broad-lined Supernova SN 2018gep: Blurring the Line between Supernovae and Fast Optical Transients by Pritchard, T. A., Bensch, Katarzyna, Modjaz, Maryam, Williamson, Marc, Thöne, Christina C., Vinkó, J., Bianco, Federica B., Bostroem, K. Azalee, Burke, Jamison, García-Benito, Rubén, Galbany, L., Hiramatsu, Daichi, Howell, D. Andrew, Izzo, Luca, Kann, D. Alexander, McCully, Curtis, Pellegrino, Craig, de Ugarte Postigo, Antonio, Valenti, Stefano, Wang, Xiaofeng, Wheeler, J. C., Xiang, Danfeng, Sárneczky, K., Bódi, A., Cseh, B., Tarczay-Nehéz, D., Kriskovics, L., Ordasi, A., Pál, A., Szakáts, R., Vida, K.

“…Abstract In the last decade a number of rapidly evolving transients have been discovered that are not easily explained by traditional supernova models. We…”
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Modeling Type Ic Supernovae with tardis: Hidden Helium in SN 1994I? by Williamson, Marc, Kerzendorf, Wolfgang, Modjaz, Maryam

“…Abstract Supernovae (SNe) with photospheric spectra devoid of hydrogen and helium features are generally classified as SNe Ic. However, there is ongoing debate…”
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A New Framework for Classifying and Modelling Stripped Envelope Supernovae by Williamson, Marc

“…Stripped envelope supernovae (SESNe) are the core collapse explosions of massive stars that have experienced mass-loss in their outer layers. These SNe have…”
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Characterizing the Rapid Hydrogen Disappearance in SN 2022crv: Evidence of a Continuum between Type Ib and IIb Supernova Properties by Dong, Yize, Valenti, Stefano, Ashall, Chris, Williamson, Marc, Sand, David J., Van Dyk, Schuyler D., Filippenko, Alexei V., Jha, Saurabh W., Lundquist, Michael, Modjaz, Maryam, Andrews, Jennifer E., Jencson, Jacob E., Hosseinzadeh, Griffin, Pearson, Jeniveve, Kwok, Lindsey A., Boland, Teresa, Hsiao, Eric Y., Smith, Nathan, Elias-Rosa, Nancy, Srivastav, Shubham, Smartt, Stephen, Fulton, Michael, Zheng, WeiKang, Brink, Thomas G., Shahbandeh, Melissa, Bostroem, K. Azalee, Hoang, Emily, Janzen, Daryl, Mehta, Darshana, Meza, Nicolas, Shrestha, Manisha, Wyatt, Samuel, Auchettl, Katie, Burns, Christopher R., Farah, Joseph, Galbany, Lluís, Padilla Gonzalez, Estefania, Haislip, Joshua, Hinkle, Jason T., Howell, D. Andrew, De Jaeger, Thomas, Kouprianov, Vladimir, Kumar, Sahana, Lu, Jing, McCully, Curtis, Moran, Shane, Morrell, Nidia, Newsome, Megan, Pellegrino, Craig, Polin, Abigail, Reichart, Daniel E., Shappee, B. J., Stritzinger, Maximilian D., Terreran, Giacomo, Tucker, M. A.

“…Abstract We present optical and near-infrared (NIR) observations of SN 2022crv, a stripped-envelope supernova in NGC 3054, discovered within 12 hr of explosion…”
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Preventable Deaths During Widespread Community Hepatitis A Outbreaks — United States, 2016–2022 by Hofmeister, Megan G, Gupta, Neil

“…Hepatitis A is acquired through the fecal-oral route and is preventable by a safe and effective vaccine. Although hepatitis A is generally mild and…”
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Modelling Type Ic Supernovae with TARDIS: Hidden Helium in SN1994I? by Williamson, Marc, Kerzendorf, Wolfgang, Modjaz, Maryam

“…Supernovae (SNe) with photospheric spectra devoid of Hydrogen and Helium features are generally classified as Type Ic SNe (SNe Ic). However, there is ongoing…”
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Optimal Classification and Outlier Detection for Stripped-Envelope Core-Collapse Supernovae by Williamson, Marc, Modjaz, Maryam, Bianco, Federica

“…The Astrophysical Journal, American Astronomical Society, 2019, 880, L22 In the current era of time-domain astronomy, it is increasingly important to have…”
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1991T-Like Type Ia Supernovae as an Extension of the Normal Population by O'Brien, John T, Kerzendorf, Wolfgang E, Fullard, Andrew, Pakmor, Reudiger, Buchner, Johannes, Vogl, Christian, Chen, Nutan, van der Smagt, Patrick, Williamson, Marc, Singhal, Jaladh

“…Type Ia supernovae remain poorly understood despite decades of investigation. Massive computationally intensive hydrodynamic simulations have been developed…”
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Dalek -- a deep-learning emulator for TARDIS by Kerzendorf, Wolfgang E, Vogl, Christian, Buchner, Johannes, Contardo, Gabriella, Williamson, Marc, van der Smagt, Patrick

“…Supernova spectral time series contain a wealth of information about the progenitor and explosion process of these energetic events. The modeling of these data…”
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Probabilistic Reconstruction of Type Ia Supernova SN 2002bo by O'Brien, John T, Kerzendorf, Wolfgang E, Fullard, Andrew, Williamson, Marc, Pakmor, Ruediger, Buchner, Johannes, Hachinger, Stephan, Vogl, Christian, Gillanders, James H, Floers, Andreas, van der Smagt, Patrick

“…Manual fits to spectral times series of Type Ia supernovae have provided a method of reconstructing the explosion from a parametric model but due to lack of…”
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Ultraviolet Spectroscopy and TARDIS Models of the Broad-lined Type-Ic Supernova 2014ad by Kwok, Lindsey A, Williamson, Marc, Jha, Saurabh W, Modjaz, Maryam, Camacho-Neves, Yssavo, Foley, Ryan J, Garnavich, Peter, Maeda, Keiichi, Milisavljevic, Dan, Pandya, Viraj, Dai, Mi, McCully, Curtis, Pritchard, Tyler, Singhal, Jaladh

“…Few published ultraviolet (UV) spectra exist for stripped-envelope supernovae, and none to date for broad-lined Type Ic supernovae (SN Ic-bl). These objects…”
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Characterizing the Rapid Hydrogen Disappearance in SN2022crv: Evidence of a Continuum between Type Ib and IIb Supernova Properties by Dong, Yize, Valenti, Stefano, Ashall, Chris, Williamson, Marc, Sand, David J, Van Dyk, Schuyler D, Filippenko, Alexei V, Jha, Saurabh W, Lundquist, Michael, Modjaz, Maryam, Andrews, Jennifer E, Jencson, Jacob E, Hosseinzadeh, Griffin, Pearson, Jeniveve, Kwok, Lindsey A, Boland, Teresa, Hsiao, Eric Y, Smith, Nathan, Elias-Rosa, Nancy, Srivastav, Shubham, Smartt, Stephen, Fulton, Michael, Zheng, WeiKang, Brink, Thomas G, Shahbandeh, Melissa, Bostroem, K. Azalee, Hoang, Emily, Janzen, Daryl, Mehta, Darshana, Meza, Nicolas, Shrestha, Manisha, Wyatt, Samuel, Auchettl, Katie, Burns, Christopher R, Farah, Joseph, Galbany, L, Gonzalez, Estefania Padilla, Haislip, Joshua, Hinkle, Jason T, Howell, D. Andrew, De Jaeger, Thomas, Kouprianov, Vladimir, Kumar, Sahana, Lu, Jing, McCully, Curtis, Moran, Shane, Morrell, Nidia, Newsome, Megan, Pellegrino, Craig, Polin, Abigail, Reichart, Daniel E, Shappee, B. J, Stritzinger, Maximilian D, Terreran, Giacomo, Tucker, M. A

“…ApJ 974 316 (2024) We present optical and near-infrared observations of SN~2022crv, a stripped envelope supernova in NGC~3054, discovered within 12 hrs of…”
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Over 500 Days in the Life of the Photosphere of the Type Iax Supernova SN 2014dt by Camacho-Neves, Yssavo, Jha, Saurabh W, Barna, Barnabas, Dai, Mi, Filippenko, Alexei V, Foley, Ryan J, Hosseinzadeh, Griffin, Howell, D. Andrew, Johansson, Joel, Kelly, Patrick, Kerzendorf, Wolfgang E, Kwok, Lindsey A, Larison, Conor, Magee, Mark R, McCully, Curtis, O'Brien, John T, Pan, Yen-Chen, Pandya, Viraj, Singhal, Jaladh, Stahl, Benjamin E, Szalai, Tamás, Wieber, Meredith, Williamson, Marc

“…2023, ApJ, 951, 67 Type Iax supernovae (SN Iax) are the largest known class of peculiar white dwarf supernovae, distinct from normal Type Ia supernovae (SN…”
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