The Volatile Composition and Activity Evolution of Main-Belt Comet 358P/PANSTARRS

Autor: Hsieh, Henry H., Noonan, John W., Kelley, Michael S. P., Bodewits, Dennis, Pittichova, Jana, Thirouin, Audrey, Micheli, Marco, Knight, Matthew M., Bannister, Michele T., Chandler, Colin O., Holt, Carrie E., Hopkins, Matthew J., Kim, Yaeji, Moskovitz, Nicholas A., Oldroyd, William J., Patterson, Jack, Sheppard, Scott S., Tan, Nicole, Trujillo, Chadwick A., Ye, Quanzhi

We report the detection of water vapor associated with main-belt comet 358P/PANSTARRS on UT 2024 January 8-9 using the NIRSPEC instrument aboard JWST. We derive a water production rate of Q(H2O)=(5.0+/-0.2)x10^25 molecules/s, marking only the second

Externí odkaz: http://arxiv.org/abs/2411.07435

Asteroid collisions: expected visibility and rate

Autor: Ofek, E. O., Polishook, D., Kushnir, D., Nir, G., Ben-Ami, S., Shvartzvald, Y., Strotjohann, N. L., Segre, E., Blumenzweig, A., Engel, M., Bodewits, D., Noonan, J. W.

Asteroid collisions are one of the main processes responsible for the evolution of bodies in the main belt. Using observations of the Dimorphos impact by the DART spacecraft, we estimate how asteroid collisions in the main belt may look in the first

Externí odkaz: http://arxiv.org/abs/2403.03248

Exploring Fundamental Particle Acceleration and Loss Processes in Heliophysics through an Orbiting X-ray Instrument in the Jovian System

Autor: Dunn, W., Berland, G., Roussos, E., Clark, G., Kollmann, P., Turner, D., Feldman, C., Stallard, T., Branduardi-Raymont, G., Woodfield, E. E., Rae, I. J., Ray, L. C., Carter, J. A., Lindsay, S. T., Yao, Z., Marshall, R., A., A. N. Jaynes, Ezoe, Y., Numazawa, M., Hospodarsky, G. B., Wu, X., Weigt, D. M., Jackman, C. M., Mori, K., Nénon, Q., Desai, R. T, Blum, L. W., Nordheim, T. A., Ness, J. U., Bodewits, D., Kimura, T., Li, W., Smith, H. T., Millas, D., Wibisono, A. D., Achilleos, N., Koutroumpa, D., McEntee, S. C., Collier, H., Bhardwaj, A., Martindale, A., Wolk, S. J., Badman, S. V., Kraft, R. P.

Jupiter's magnetosphere is considered to be the most powerful particle accelerator in the Solar System, accelerating electrons from eV to 70 MeV and ions to GeV energies. How electromagnetic processes drive energy and particle flows, producing and re

Externí odkaz: http://arxiv.org/abs/2303.02161

Activity and composition of the hyperactive comet 46P/Wirtanen during its close approach in 2018

Autor: Moulane, Y., Jehin, E., Manfroid, J., Hutsemékers, D., Opitom, C., Shinnaka, Y., Bodewits, D., Benkhaldoun, Z., Jabiri, A., Hmiddouch, S., Donckt, M. Vander, Pozuelos, F. J., Yang, B.

Publikováno v: A&A 670, A159 (2023)

Hyperactive comets are a small group of comets whose activity are higher than expected. They seem to emit more water than they should based on the size of their nucleus and comet 46P/Wirtanen is one of them. Investigating its activity and composition

Externí odkaz: http://arxiv.org/abs/2301.10954

Line Emission Mapper (LEM): Probing the physics of cosmic ecosystems

Autor: Kraft, Ralph, Markevitch, Maxim, Kilbourne, Caroline, Adams, Joseph S., Akamatsu, Hiroki, Ayromlou, Mohammadreza, Bandler, Simon R., Barbera, Marco, Bennett, Douglas A., Bhardwaj, Anil, Biffi, Veronica, Bodewits, Dennis, Bogdan, Akos, Bonamente, Massimiliano, Borgani, Stefano, Branduardi-Raymont, Graziella, Bregman, Joel N., Burchett, Joseph N., Cann, Jenna, Carter, Jenny, Chakraborty, Priyanka, Churazov, Eugene, Crain, Robert A., Cumbee, Renata, Dave, Romeel, DiPirro, Michael, Dolag, Klaus, Doriese, W. Bertrand, Drake, Jeremy, Dunn, William, Eckart, Megan, Eckert, Dominique, Ettori, Stefano, Forman, William, Galeazzi, Massimiliano, Gall, Amy, Gatuzz, Efrain, Hell, Natalie, Hodges-Kluck, Edmund, Jackman, Caitriona, Jahromi, Amir, Jennings, Fred, Jones, Christine, Kaaret, Philip, Kavanagh, Patrick J., Kelley, Richard L., Khabibullin, Ildar, Kim, Chang-Goo, Koutroumpa, Dimitra, Kovacs, Orsolya, Kuntz, K. D., Lau, Erwin, Lee, Shiu-Hang, Leutenegger, Maurice, Lin, Sheng-Chieh, Lisse, Carey, Cicero, Ugo Lo, Lovisari, Lorenzo, McCammon, Dan, McEntee, Sean, Mernier, Francois, Miller, Eric D., Nagai, Daisuke, Negro, Michela, Nelson, Dylan, Ness, Jan-Uwe, Nulsen, Paul, Ogorzalek, Anna, Oppenheimer, Benjamin D., Oskinova, Lidia, Patnaude, Daniel, Pfeifle, Ryan W., Pillepich, Annalisa, Plucinsky, Paul, Pooley, David, Porter, Frederick S., Randall, Scott, Rasia, Elena, Raymond, John, Ruszkowski, Mateusz, Sakai, Kazuhiro, Sarkar, Arnab, Sasaki, Manami, Sato, Kosuke, Schellenberger, Gerrit, Schaye, Joop, Simionescu, Aurora, Smith, Stephen J., Steiner, James F., Stern, Jonathan, Su, Yuanyuan, Sun, Ming, Tremblay, Grant, Truong, Nhut, Tutt, James, Ursino, Eugenio, Veilleux, Sylvain, Vikhlinin, Alexey, Vladutescu-Zopp, Stephan, Vogelsberger, Mark, Walker, Stephen A., Weaver, Kimberly, Weigt, Dale M., Werk, Jessica, Werner, Norbert, Wolk, Scott J., Zhang, Congyao, Zhang, William W., Zhuravleva, Irina, ZuHone, John

The Line Emission Mapper (LEM) is an X-ray Probe for the 2030s that will answer the outstanding questions of the Universe's structure formation. It will also provide transformative new observing capabilities for every area of astrophysics, and to hel

Externí odkaz: http://arxiv.org/abs/2211.09827