Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Gaches, Brandt A. L."'
Autor:
Klaassen, Pamela, Traficante, Alessio, Beltrán, Maria T., Pattle, Kate, Booth, Mark, Lovell, Joshua B., Marshall, Jonathan P., Hacar, Alvaro, Gaches, Brandt A. L., Bot, Caroline, Peretto, Nicolas, Stanke, Thomas, Arzoumanian, Doris, Cabral, Ana Duarte, Duchêne, Gaspard, Eden, David J., Hales, Antonio, Kauffmann, Jens, Luppe, Patricia, Marino, Sebastian, Redaelli, Elena, Rigby, Andrew J., Sánchez-Monge, Álvaro, Schisano, Eugenio, Semenov, Dmitry A., Spezzano, Silvia, Thompson, Mark A., Wyrowski, Friedrich, Cicone, Claudia, Mroczkowski, Tony, Cordiner, Martin A., Di Mascolo, Luca, Johnstone, Doug, van Kampen, Eelco, Lee, Minju M., Liu, Daizhong, Maccarone, Thomas J., Saintonge, Amélie, Smith, Matthew, Thelen, Alexander E., Wedemeyer, Sven
Publikováno v:
Open Res Europe 2024, 4:112 [version 1; peer review: awaiting peer review]
As we learn more about the multi-scale interstellar medium (ISM) of our Galaxy, we develop a greater understanding for the complex relationships between the large-scale diffuse gas and dust in Giant Molecular Clouds (GMCs), how it moves, how it is af
Externí odkaz:
http://arxiv.org/abs/2403.00917
Autor:
Gaches, Brandt A. L., Grassi, Tommaso, Vogt-Geisse, Stefan, Bovolenta, Giulia M., Vallance, Claire, Heathcote, David, Padovani, Marco, Bovino, Stefano, Gorai, Prasanta
(Abridged) Electron-molecule interaction is a fundamental process in radiation-driven chemistry in space, from the interstellar medium to comets. Therefore, knowledge of interaction cross-sections is key. While there has been a plethora of studies of
Externí odkaz:
http://arxiv.org/abs/2310.10739
X-ray radiation, in particular radiation between 0.1 keV and 10 keV, is evident from both point-like sources, such as compact objects and T-Tauri young stellar objects, and extended emission from hot, cooling gas, such as in supernova remnants. The X
Externí odkaz:
http://arxiv.org/abs/2301.13237
Autor:
Gaches, Brandt A. L., Bialy, Shmuel, Bisbas, Thomas G., Padovani, Marco, Seifried, Daniel, Walch, Stefanie
Publikováno v:
A&A 664, A150 (2022)
Context: It has been proposed that H$_2$ near-infrared lines may be excited by cosmic rays and allow for a determination of the cosmic-ray ionization rate in dense gas. One-dimensional models show that measuring both the H$_2$ gas column density and
Externí odkaz:
http://arxiv.org/abs/2206.09780
Publikováno v:
A&A 658, A151 (2022)
Observations of the emission of the carbon cycle species (C, C+ CO) are commonly used to diagnose gas properties in the interstellar medium but are significantly sensitive to the cosmic-ray ionization rate. The carbon-cycle chemistry is known to be q
Externí odkaz:
http://arxiv.org/abs/2110.06958
Low-energy cosmic rays, in particular protons with energies below 1 GeV, are significant drivers of the thermochemistry of molecular clouds. However, these cosmic rays are also greatly impacted by energy losses and magnetic field transport effects in
Externí odkaz:
http://arxiv.org/abs/2108.03250
Autor:
Yun, Hyeong-Sik, Lee, Jeong-Eun, Evans II, Neal J., Offner, Stella S. R., Heyer, Mark H., Cho, Jungyeon, Gaches, Brandt A. L., Yang, Yao-Lun, Chen, How-Huan, Choi, Yunhee, Lee, Yong-Hee, Baek, Giseon, Choi, Minho, Kim, Jongsoo, Kang, Hyunwoo, Lee, Seokho, Tatematsu, Ken'ichi
We investigate the effect of star formation on turbulence in the Orion A and Ophiuchus clouds using principal component analysis (PCA). We measure the properties of turbulence by applying PCA on the spectral maps in $^{13}$CO, C$^{18}$O, HCO$^+$ $J=$
Externí odkaz:
http://arxiv.org/abs/2107.13323
Autor:
Yun, Hyeong-Sik, Lee, Jeong-Eun, Choi, Yunhee, Evans II, Neal J., Offner, Stella S. R., Heyer, Mark H., Gaches, Brandt A. L., Lee, Yong-Hee, Baek, Giseon, Choi, Minho, Kang, Hyunwoo, Lee, Seokho, Tatematsu, Ken'ichi, Yang, Yao-Lun, Chen, How-Huan, Lee, Youngung, Jung, Jae Hoon, Lee, Changhoon, Cho, Jungyeon
We have used the Taeduk Radio Astronomy Observatory to observe the Orion A and Ophiuchus clouds in the $J=$1$-$0 lines of $^{13}$CO, C$^{18}$O, HCN, HCO$^+$, and N$_2$H$^+$ and the $J=$2$-$1 line of CS. The fully sampled maps with uniform noise level
Externí odkaz:
http://arxiv.org/abs/2106.04111
Autor:
Axen, Margot Fitz, Offner, Stella S. S., Gaches, Brandt A. L., Fryer, Chris L., Hungerford, Aimee, Silsbee, Kedron
Recent studies have suggested that low-energy cosmic rays (CRs) may be accelerated inside molecular clouds by the shocks associated with star formation. We use a Monte Carlo transport code to model the propagation of CRs accelerated by protostellar a
Externí odkaz:
http://arxiv.org/abs/2105.00028
The radioactive decay of aluminum-26 ($^{26}$Al) is an important heating source in early planet formation. Since its discovery, there have been several mechanisms proposed to introduce $^{26}$Al into protoplanetary disks, primarily through contaminat
Externí odkaz:
http://arxiv.org/abs/2007.12707