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Your search keyword '"Lazarian, Alex"' showing total 40 results
Start Over Author "Lazarian, Alex" Publisher american astronomical society
40 results on '"Lazarian, Alex"'

1. Major Scientific Challenges and Opportunities in Understanding Magnetic Reconnection and Related Explosive Phenomena in Heliophysics and Beyond

Author

Ji, Hantao, primary, Karpen, Judth, additional, Alt, Andrew, additional, Bellan, Paul, additional, Begelman, Mitch, additional, Beresnyak, Andrey, additional, Blackman, Eric, additional, Bose, Sayak, additional, Brown, Mike, additional, Burch, James, additional, Carter, Troy, additional, Cassak, Paul, additional, Chen, Bin, additional, Chen, Li-Jen, additional, Cheung, Mark, additional, Comisso, Luca, additional, Dahlin, Joel, additional, Daughton, William, additional, DeLuca, Ed, additional, Dong, Chuanfei, additional, Dorfman, Seth, additional, Drake, JIm, additional, Ebrahimi, Fatima, additional, Egedal, Jan, additional, Forest, Cary, additional, Froula, Dustin, additional, Fujimoto, Keizo, additional, Gao, Lan, additional, Genestreti, Kevin, additional, Gibson, Sarah, additional, Guo, Fan, additional, Hoshino, Masahiro, additional, Hu, Qiang, additional, Huang, Yi-Min, additional, Karimabadi, Homa, additional, Kepco, Larry, additional, Klimchuk, Jim, additional, Kunz, Matthew, additional, Kusano, Kanya, additional, Lazarian, Alex, additional, Lebedev, Sergey, additional, Li, Hui, additional, Li, Xiaocan, additional, Lin, Yu, additional, Linton, Mark, additional, Liu, Yi-Hsin, additional, Loureiro, Nuno, additional, Majeski, Stephen, additional, Matthaeus, William, additional, McLaughlin, James, additional, Murphy, Nick, additional, Ono, Yasushi, additional, Opher, Merav, additional, Qiu, Jiong, additional, Rempel, Matthias, additional, Ren, Yang, additional, Rosner, Robert, additional, Roytershteyn, Vadim, additional, Savcheva, Antonia, additional, Schoeffier, Kevin, additional, Scime, Earl, additional, Shi, Peiyun, additional, Sironi, Lorenzo, additional, Stanier, Adam, additional, TenBarge, Jason, additional, Vaivads, Andris, additional, Wang, Haimin, additional, Yamada, Masaaki, additional, Yokoyama, Takaaki, additional, Yoo, Jongsoo, additional, Zenitani, Seiji, additional, Zhang, Jie, additional, and Zweibel, Ellen, additional

Published
2023
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2. SOFIA Observations of 30 Doradus. II. Magnetic Fields and Large-scale Gas Kinematics

Author

Tram, Le Ngoc, primary, Bonne, Lars, additional, Hu, Yue, additional, Lopez-Rodriguez, Enrique, additional, Guerra, Jordan A., additional, Lesaffre, Pierre, additional, Gusdorf, Antoine, additional, Hoang, Thiem, additional, Lee, Min-Young, additional, Lazarian, Alex, additional, Andersson, B-G, additional, Coudé, Simon, additional, Soam, Archana, additional, Vacca, William D., additional, Lee, Hyeseung, additional, and Gordon, Michael, additional

Published
2023
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6. Grain Alignment in the Circumstellar Shell of IRC+10° 216

Author

Andersson, B-G, primary, Lopez-Rodriguez, Enrique, additional, Medan, Ilija, additional, Soam, Archana, additional, Hoang, Thiem, additional, Vaillancourt, John E., additional, Lazarian, Alex, additional, Sandin, Christer, additional, Mattsson, Lars, additional, and Tahani, Mehrnoosh, additional

Published
2022
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7. Grain Alignment in the Circumstellar Shell of IRC+10 degrees 216

Author

Andersson, B-G, Lopez-Rodriguez, Enrique, Medan, Ilija, Soam, Archana, Hoang, Thiem, Vaillancourt, John E., Lazarian, Alex, Sandin, Christer, Mattsson, Lars, Tahani, Mehrnoosh, Andersson, B-G, Lopez-Rodriguez, Enrique, Medan, Ilija, Soam, Archana, Hoang, Thiem, Vaillancourt, John E., Lazarian, Alex, Sandin, Christer, Mattsson, Lars, and Tahani, Mehrnoosh

Abstract

Dust-induced polarization in the interstellar medium (ISM) is due to asymmetric grains aligned with an external reference direction, usually the magnetic field. For both the leading alignment theories, the alignment of the grain's angular momentum with one of its principal axes and the coupling with the magnetic field requires the grain to be paramagnetic. Of the two main components of interstellar dust, silicates are paramagnetic, while carbon dust is diamagnetic. Hence, carbon grains are not expected to align in the ISM. To probe the physics of carbon grain alignment, we have acquired Stratospheric Observatory for Infrared Astronomy/Higch-resolution Airborne Wideband Camera-plus far-infrared photometry and polarimetry of the carbon-rich circumstellar envelope (CSE) of the asymptotic giant branch star IRC+10 degrees 216. The dust in such CSEs are fully carbonaceous and thus provide unique laboratories for probing carbon grain alignment. We find a centrosymmetric, radial, polarization pattern, where the polarization fraction is well correlated with the dust temperature. Together with estimates of a low fractional polarization from optical polarization of background stars, we interpret these results to be due to a second-order, direct radiative external alignment of grains without internal alignment. Our results indicate that (pure) carbon dust does not contribute significantly to the observed ISM polarization, consistent with the nondetection of polarization in the 3.4 mu m feature due to aliphatic CH bonds on the grain surface., QC 20230314

Published
2022
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14. HAWC+ Far-infrared Observations of the Magnetic Field Geometry in M51 and NGC 891

Author

Jones, Terry Jay, primary, Kim, Jin-Ah, additional, Dowell, C. Darren, additional, Morris, Mark R., additional, Pineda, Jorge L., additional, Benford, Dominic J., additional, Berthoud, Marc, additional, Chuss, David T., additional, Dale, Daniel A., additional, Fissel, L. M., additional, Goldsmith, Paul F., additional, Hamilton, Ryan T., additional, Hanany, Shaul, additional, Harper, Doyal A., additional, Henning, Thomas K., additional, Lazarian, Alex, additional, Looney, Leslie W., additional, Michail, Joseph M., additional, Novak, Giles, additional, Santos, Fabio P., additional, Sheth, Kartik, additional, Siah, Javad, additional, Stacey, Gordon J., additional, Staguhn, Johannes, additional, Stephens, Ian W., additional, Tassis, Konstantinos, additional, Trinh, Christopher Q., additional, Vaillancourt, John E., additional, Ward-Thompson, Derek, additional, Werner, Michael, additional, Wollack, Edward J., additional, and Zweibel, Ellen G., additional

Published
2020
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23. The Far-infrared Polarization Spectrum of ρ Ophiuchi A from HAWC+/SOFIA Observations

Author

Santos, Fabio P., primary, Chuss, David T., additional, Dowell, C. Darren, additional, Houde, Martin, additional, Looney, Leslie W., additional, Rodriguez, Enrique Lopez, additional, Novak, Giles, additional, Ward-Thompson, Derek, additional, Berthoud, Marc, additional, Dale, Daniel A., additional, Guerra, Jordan A., additional, Hamilton, Ryan T., additional, Hanany, Shaul, additional, Harper, Doyal A., additional, Henning, Thomas K., additional, Jones, Terry Jay, additional, Lazarian, Alex, additional, Michail, Joseph M., additional, Morris, Mark R., additional, Staguhn, Johannes, additional, Stephens, Ian W., additional, Tassis, Konstantinos, additional, Trinh, Christopher Q., additional, Camp, Eric Van, additional, Volpert, C. G., additional, and Wollack, Edward J., additional

Published
2019
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31. CHARACTERIZING THE TURBULENT PROPERTIES OF THE STARLESS MOLECULAR CLOUD MBM 16

Author

Pingel, N. M., primary, Stanimirović, Snezana, additional, Peek, J. E. G., additional, Lee, Min-Young, additional, Lazarian, Alex, additional, Burkhart, Blakesley, additional, Begum, Ayesha, additional, Douglas, Kevin A., additional, Heiles, Carl, additional, Gibson, Steven J., additional, Grcevich, Jana, additional, Korpela, Eric J., additional, Lawrence, Allen, additional, Murray, Claire, additional, Putman, Mary E., additional, and Saul, Destry, additional

Published
2013
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