Zobrazeno 1 - 10
of 154
pro vyhledávání: '"French, David M."'
Autor:
Ashley, Trisha, Fox, Andrew J., Lockman, Felix J., Wakker, Bart P., Richter, Philipp, French, David M., Moss, Vanessa A., McClure-Griffiths, Naomi M.
High-velocity clouds (HVCs) are multi-phase gas structures whose velocities (|v_LSR|>100 km/s) are too high to be explained by Galactic disk rotation. While large HVCs are well characterized, compact and small HVCs (with HI angular sizes of a few deg
Externí odkaz:
http://arxiv.org/abs/2311.09377
Autor:
Krishnarao, Dhanesh, Fox, Andrew J., D'Onghia, Elena, Wakker, Bart P., Cashman, Frances H., Howk, J. Christopher, Lucchini, Scott, French, David M., Lehner, Nicolas
Publikováno v:
Nature 609, pages 915-918 (2022)
The Large and Small Magellanic Clouds (LMC/SMC) are the closest major satellite galaxies of the Milky Way. They are likely on their first passage on an infalling orbit towards our Galaxy (Besla et al. 2007) and trace the ongoing dynamics of the Local
Externí odkaz:
http://arxiv.org/abs/2209.15017
Autor:
French, David M., Fox, Andrew J., Wakker, Bart P., Norman, Colin, Lehner, Nicolas, Howk, J. Christopher, Savage, Blair D., Richter, Philipp, O'Meara, John, Borthakur, Sanchayeeta, Heckman, Timoth
We present a census of neutral gas in the Milky Way disk and halo down to limiting column densities of $N$(HI)$\sim10^{14}$ cm$^{-2}$ using measurements of HI Lyman-series absorption from the Far Ultraviolet Spectroscopic Explorer (FUSE). Our results
Externí odkaz:
http://arxiv.org/abs/2108.07419
Autor:
French, David M., Wakker, Bart P.
We present results of a study comparing the relative velocity of $\rm Ly\alpha$ absorbers to the rotation velocity of nearby galaxy disks in the local universe ($z \leq 0.03$). We have obtained rotation curves via long-slit spectroscopy of eight gala
Externí odkaz:
http://arxiv.org/abs/2006.09323
Autor:
Peeples, Molly S., Behroozi, Peter, Bordoloi, Rongmon, Brooks, Alyson, Bullock, James S., Burchett, Joseph N., Chen, Hsiao-Wen, Chisholm, John, Christensen, Charlotte, Coil, Alison, Corlies, Lauren, Diamond-Stanic, Aleksandar, Donahue, Megan, Faucher-Giguère, Claude-André, Ferguson, Henry, Fielding, Drummond, Fox, Andrew J., French, David M., Furlanetto, Steven R., Gennaro, Mario, Gilbert, Karoline M., Hamden, Erika, Hathi, Nimish, Hayes, Matthew, Henry, Alaina, Howk, J. Christopher, Hummels, Cameron, Kereš, Dušan, Kirby, Evan, Koekemoer, Anton M., Lan, Ting-Wen, Lanz, Lauranne, Law, David R., Lehner, Nicolas, Lotz, Jennifer M., Martin, Crystal L., McQuinn, Kristen, McQuinn, Matthew, Munshi, Ferah, Oh, S. Peng, O'Meara, John M., O'Shea, Brian W., Pacifici, Camilla, Peek, J. E. G., Postman, Marc, Prescott, Moire, Putman, Mary, Quataert, Eliot, Rafelski, Marc, Ribaudo, Joseph, Rowlands, Kate, Rubin, Kate, Salmon, Brett, Scarlata, Claudia, Shapley, Alice E., Simons, Raymond, Snyder, Gregory F., Stern, Jonathan, Strom, Allison L., Tollerud, Erik, Torrey, Paul, Tremblay, Grant, Tripp, Todd M., Tumlinson, Jason, Tuttle, Sarah, Bosch, Frank C. van den, Voit, G. Mark, Wang, Q. Daniel, Werk, Jessica K., Williams, Benjamin F., Zaritsky, Dennis, Zheng, Yong
Publikováno v:
Astro2020: Decadal Survey on Astronomy and Astrophysics, science white papers, no. 368; Bulletin of the American Astronomical Society, Vol. 51, Issue 3, id. 368 (2019)
Galaxies evolve under the influence of gas flows between their interstellar medium and their surrounding gaseous halos known as the circumgalactic medium (CGM). The CGM is a major reservoir of galactic baryons and metals, and plays a key role in the
Externí odkaz:
http://arxiv.org/abs/1903.05644
Autor:
Schmidt, Frederik, Schulze, Julian, Johnson, Erik, Booth, Jean-Paul, Keil, Douglas, French, David M., Trieschmann, Jan, Mussenbrock, Thomas
Publikováno v:
Plasma Sources Science and Technolology 27, 095012 (2018)
Customized voltage waveforms composed of a number of frequencies and used as the excitation of radio-frequency plasmas can control various plasma parameters such as energy distribution functions, homogeneity of the ionflux or ionization dynamics. So
Externí odkaz:
http://arxiv.org/abs/1804.10357
Autor:
French, David M., Wakker, Bart P.
Publikováno v:
ApJ, 837, 138 (2017)
We present initial results from an ongoing large-scale study of the circumgalactic medium in the nearby Universe ($cz \leq 10,000$ km/s), using archival Cosmic Origins Spectrograph spectra of background quasi-stellar objects. This initial sample cont
Externí odkaz:
http://arxiv.org/abs/1703.04618
Akademický článek
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Autor:
Gorges, Anthony R., Foxley, Ansel J., French, David M., Ryan, Christopher M., Roberts, Jacob L.
Reabsorption, the multiple scattering of spontaneously emitted photons in optically thick gases, is a major limitation to efficient optical pumping and laser cooling in ultracold gases. We report mitigation of reabsorption using spatial and frequency
Externí odkaz:
http://arxiv.org/abs/physics/0607215
Akademický článek
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