Strong Carbon Features and a Red Early Color in the Underluminous Type Ia SN 2022xkq

Autor: Pearson, Jeniveve, Sand, David J., Lundqvist, Peter, Galbany, Lluís, Andrews, Jennifer E., Bostroem, K. Azalee, Dong, Yize, Hoang, Emily, Hosseinzadeh, Griffin, Janzen, Daryl, Jencson, Jacob E., Lundquist, Michael J., Mehta, Darshana, Retamal, Nicolás Meza, Shrestha, Manisha, Valenti, Stefano, Wyatt, Samuel, Anderson, Joseph P., Ashall, Chris, Auchettl, Katie, Baron, Eddie, Blondin, Stéphane, Burns, Christopher R., Cai, Yongzhi, Chen, Ting-Wan, Chomiuk, Laura, Coulter, David A., Cross, Dane, Davis, Kyle W., de Jaeger, Thomas, DerKacy, James M., Desai, Dhvanil D., Dimitriadis, Georgios, Do, Aaron, Farah, Joseph R., Foley, Ryan J., Gromadzki, Mariusz, Gutiérrez, Claudia P., Haislip, Joshua, Hernández, Jonay I. González, Hinkle, Jason T., Hoogendam, Willem B., Howell, D. Andrew, Hoeflich, Peter, Hsiao, Eric, Huber, Mark E., Jha, Saurabh W., Palau, Cristina Jiménez, Kilpatrick, Charles D., Kouprianov, Vladimir, Kumar, Sahana, Kwok, Lindsey A., Larison, Conor, LeBaron, Natalie, Saux, Xavier Le, Lu, Jing, McCully, Curtis, Evans, Tycho Mera, Milne, Peter, Modjaz, Maryam, Morrell, Nidia, Müller-Bravo, Tomás E., Newsome, Megan, Nicholl, Matt, Gonzalez, Estefania Padilla, Payne, Anna V., Pellegrino, Craig, Phan, Kim, Pineda-García, Jonathan, Piro, Anthony L., Piscarreta, Lara, Polin, Abigail, Reichart, Daniel E., Rojas-Bravo, César, Ryder, Stuart D., Salmaso, Irene, Schwab, Michaela, Shahbandeh, Melissa, Shappee, Benjamin J., Siebert, Matthew R., Smith, Nathan, Strader, Jay, Taggart, Kirsty, Terreran, Giacomo, Tinyanont, Samaporn, Tucker, M. A., Valerin, Giorgio, Young, D. R.

We present optical, infrared, ultraviolet, and radio observations of SN 2022xkq, an underluminous fast-declining type Ia supernova (SN Ia) in NGC 1784 ($\mathrm{D}\approx31$ Mpc), from $<1$ to 180 days after explosion. The high-cadence observations o

Externí odkaz: http://arxiv.org/abs/2309.10054

Ground-based and JWST Observations of SN 2022pul: I. Unusual Signatures of Carbon, Oxygen, and Circumstellar Interaction in a Peculiar Type Ia Supernova

Autor: Siebert, Matthew R., Kwok, Lindsey A., Johansson, Joel, Jha, Saurabh W., Blondin, Stéphane, Dessart, Luc, Foley, Ryan J., Hillier, D. John, Larison, Conor, Pakmor, Rüdiger, Temim, Tea, Andrews, Jennifer E., Auchettl, Katie, Badenes, Carles, Barna, Barnabas, Bostroem, K. Azalee, Newman, Max J. Brenner, Brink, Thomas G., Bustamante-Rosell, María José, Camacho-Neves, Yssavo, Clocchiatti, Alejandro, Coulter, David A., Davis, Kyle W., Deckers, Maxime, Dimitriadis, Georgios, Dong, Yize, Farah, Joseph, Filippenko, Alexei V., Flörs, Andreas, Fox, Ori D., Garnavich, Peter, Gonzalez, Estefania Padilla, Graur, Or, Hambsch, Franz-Josef, Hosseinzadeh, Griffin, Howell, D. Andrew, Hughes, John P., Kerzendorf, Wolfgang E., Saux, Xavier K. Le, Maeda, Keiichi, Maguire, Kate, McCully, Curtis, Mihalenko, Cassidy, Newsome, Megan, O'Brien, John T., Pearson, Jeniveve, Pellegrino, Craig, Pierel, Justin D. R., Polin, Abigail, Rest, Armin, Rojas-Bravo, César, Sand, David J., Schwab, Michaela, Shahbandeh, Melissa, Shrestha, Manisha, Smith, Nathan, Strolger, Louis-Gregory, Szalai, Tamás, Taggart, Kirsty, Terreran, Giacomo, Terwel, Jacco H., Tinyanont, Samaporn, Valenti, Stefano, Vinkó, József, Wheeler, J. Craig, Yang, Yi, Zheng, Weikang, Ashall, Chris, Derkacy, James M., Galbany, Lluís, Hoeflich, Peter, Hsiao, Eric, De Jaeger, Thomas, Lu, Jing, Maund, Justyn, Medler, Kyle, Morrell, Nidia, Shappee, Benjamin J., Stritzinger, Maximilian, Suntzeff, Nicholas, Tucker, Michael, Wang, Lifan

Nebular-phase observations of peculiar Type Ia supernovae (SNe Ia) provide important constraints on progenitor scenarios and explosion dynamics for both these rare SNe and the more common, cosmologically useful SNe Ia. We present observations from an

Externí odkaz: http://arxiv.org/abs/2308.12449

A Search for Technosignatures Around 11,680 Stars with the Green Bank Telescope at 1.15-1.73 GHz

Autor: Margot, Jean-Luc, Li, Megan G., Pinchuk, Pavlo, Myhrvold, Nathan, Lesyna, Larry, Alcantara, Lea E., Andrakin, Megan T., Arunseangroj, Jeth, Baclet, Damien S., Belk, Madison H., Bhadha, Zerxes R., Brandis, Nicholas W., Carey, Robert E., Cassar, Harrison P., Chava, Sai S., Chen, Calvin, Chen, James, Cheng, Kellen T., Cimbri, Alessia, Cloutier, Benjamin, Combitsis, Jordan A., Couvrette, Kelly L., Coy, Brandon P., Davis, Kyle W., Delcayre, Antoine F., Du, Michelle R., Feil, Sarah E., Fu, Danning, Gilmore, Travis J., Grahill-Bland, Emery, Iglesias, Laura M., Juneau, Zoe, Karapetian, Anthony G., Karfakis, George, Lambert, Christopher T., Lazbin, Eric A., Li, Jian H., Zhuofu, Li, Liskij, Nicholas M., Lopilato, Anthony V., Lu, Darren J., Ma, Detao, Mathur, Vedant, Minasyan, Mary H., Muller, Maxwell K., Nasielski, Mark T., Nguyen, Janice T., Nicholson, Lorraine M., Niemoeller, Samantha, Ohri, Divij, Padhye, Atharva U., Penmetcha, Supreethi V., Prakash, Yugantar, Xinyi, Qi, Rindt, Liam, Sahu, Vedant, Scally, Joshua A., Scott, Zefyr, Seddon, Trevor J., Shohet, Lara-Lynn V., Sinha, Anchal, Sinigiani, Anthony E., Song, Jiuxu, Stice, Spencer M., Uplisashvili, Andria, Vanga, Krishna, Vazquez, Amaury G., Vetushko, George, Villa, Valeria, Vincent, Maria, Waasdorp, Ian J., Wagaman, Ian B., Wang, Amanda, Wight, Jade C., Wong, Ella, Yamaguchi, Natsuko, Zhang, Zijin, Zhao, Junyang, Lynch, Ryan S.

Publikováno v: AJ 166 206 (2023)

We conducted a search for narrowband radio signals over four observing sessions in 2020-2023 with the L-band receiver (1.15-1.73 GHz) of the 100 m diameter Green Bank Telescope. We pointed the telescope in the directions of 62 TESS Objects of Interes

Externí odkaz: http://arxiv.org/abs/2308.02712

A Low-Mass Helium Star Progenitor Model for the Type Ibn SN 2020nxt

Autor: Wang, Qinan, Goel, Anika, Dessart, Luc, Fox, Ori D., Shahbandeh, Melissa, Rest, Sofia, Rest, Armin, Groh, Jose H., Allan, Andrew, Fransson, Claes, Smith, Nathan, Hosseinzadeh, Griffin, Filippenko, Alexei V., Andrews, Jennifer, Bostroem, K. Azalee, Brink, Thomas G., Brown, Peter, Burke, Jamison, Chevalier, Roger, Clayton, Geoffrey C., Dai, Mi, Davis, Kyle W., Foley, Ryan J., Gomez, Sebastian, Harris, Chelsea, Hiramatsu, Daichi, Howell, D. Andrew, Jennings, Connor, Jha, Saurabh W., Kasliwal, Mansi M., Kelly, Patrick L., Kool, Erik C., Liu, Evelyn, Ma, Emily, McCully, Curtis, Miller, Adam M., Murakami, Yukei, Pellegrino, Craig, Gonzalez, Estefania Padilla, Perera, Derek, Pierel, Justin, Rojas-Bravo, César, Siebert, Matthew R., Sollerman, Jesper, Szalai, Tamás, Tinyanont, Samaporn, Van Dyk, Schuyler D., Zheng, WeiKang, Chambers, Kenneth C., Coulter, David A., de Boer, Thomas, Earl, Nicholas, Farias, Diego, Gall, Christa, McGill, Peter, Ransome, Conor L., Taggart, Kirsty, Villar, V. Ashley

A growing number of supernovae (SNe) are now known to exhibit evidence for significant interaction with a dense, pre-existing, circumstellar medium (CSM). SNe Ibn comprise one such class that can be characterised by both rapidly evolving light curves

Externí odkaz: http://arxiv.org/abs/2305.05015

Deep learning based surrogate modeling for thermal plume prediction of groundwater heat pumps

Autor: Davis, Kyle, Leiteritz, Raphael, Pflüger, Dirk, Schulte, Miriam

The ability for groundwater heat pumps to meet space heating and cooling demands without relying on fossil fuels, has prompted their mass roll out in dense urban environments. In regions with high subsurface groundwater flow rates, the thermal plume

Externí odkaz: http://arxiv.org/abs/2302.08199