Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Gupta, Harshal"'
Autor:
Wenzel, Gabi, Speak, Thomas H., Changala, P. Bryan, Willis, Reace H. J., Burkhardt, Andrew M., Zhang, Shuo, Bergin, Edwin A., Byrne, Alex N., Charnley, Steven B., Fried, Zachary T. P., Gupta, Harshal, Herbst, Eric, Holdren, Martin S., Lipnicky, Andrew, Loomis, Ryan A., Shingledecker, Christopher N., Xue, Ci, Remijan, Anthony J., Wendlandt, Alison E., McCarthy, Michael C., Cooke, Ilsa R., McGuire, Brett A.
Polycyclic aromatic hydrocarbons (PAHs) are among the most ubiquitous compounds in the universe, accounting for up to ~25% of all interstellar carbon. Since most unsubstituted PAHs do not possess permanent dipole moments, they are invisible to radio
Externí odkaz:
http://arxiv.org/abs/2410.00670
Autor:
Wenzel, Gabi, Cooke, Ilsa R., Changala, P. Bryan, Bergin, Edwin A., Zhang, Shuo, Burkhardt, Andrew M., Byrne, Alex N., Charnley, Steven B., Cordiner, Martin A., Duffy, Miya, Fried, Zachary T. P., Gupta, Harshal, Holdren, Martin S., Lipnicky, Andrew, Loomis, Ryan A., Shay, Hannah Toru, Shingledecker, Christopher N., Siebert, Mark A., Stewart, D. Archie, Willis, Reace H. J., Xue, Ci, Remijan, Anthony J., Wendlandt, Alison E., McCarthy, Michael C., McGuire, Brett A.
Polycyclic aromatic hydrocarbons (PAHs) are expected to be the most abundant class of organic molecules in space. Their interstellar lifecycle is not well understood, and progress is hampered by difficulties detecting individual PAH molecules. Here,
Externí odkaz:
http://arxiv.org/abs/2410.00657
Autor:
Remijan, Anthony, Scolati, Haley N., Burkhardt, Andrew M., Changala, P. Bryan, Charnley, Steven B., Cooke, Ilsa R., Cordiner, Martin A., Gupta, Harshal, Herbst, Eric, Lee, Kin Long Kelvin, Loomis, Ryan, Shingledecker, Christopher N., Siebert, Mark A., Xue, Ci, McCarthy, Michael C., McGuire, Brett A.
Using data from the GOTHAM (GBT Observations of TMC-1: Hunting for Aromatic Molecules) survey, we report the first astronomical detection of the C10H- anion. The astronomical observations also provided the necessary data to refine the spectroscopic p
Externí odkaz:
http://arxiv.org/abs/2301.07760
Autor:
Neufeld, David A., Wiesemeyer, Helmut, Wolfire, Mark J., Jacob, Arshia, Buchbender, Christof, Gerin, Maryvonne, Gupta, Harshal, Güsten, Rolf, Schilke, Peter
We have revisited the chemistry of chlorine-bearing species in the diffuse interstellar medium with new observations of the HCl$^+$ molecular ion and new astrochemical models. Using the GREAT instrument on board SOFIA, we observed the $^2\Pi_{3/2}\,
Externí odkaz:
http://arxiv.org/abs/2106.00744
Autor:
Morris, Patrick W., Gupta, Harshal, Nagy, Zsofia, Pearson, John C., Ossenkopf-Okada, Volker, Falgarone, Edith, Lis, Dariusz C., Gerin, Maryvonne, Melnick, Gary, Neufeld, David A., Bergin, Edwin A.
The CH$^+$ ion is a key species in the initial steps of interstellar carbon chemistry. Its formation in diverse environments where it is observed is not well understood, however, because the main production pathway is so endothermic (4280 K) that it
Externí odkaz:
http://arxiv.org/abs/1604.05805
Autor:
Neufeld, David A., Black, John H., Gerin, Maryvonne, Goicoechea, Javier R., Goldsmith, Paul F., Gry, Cecile, Gupta, Harshal, Herbst, Eric, Indriolo, Nick, Lis, Dariusz, Menten, Karl M., Monje, Raquel, Mookerjea, Bhaswati, Persson, Carina, Sonnentrucker, Paule, Wolfire, Mark G.
We report additional detections of the chloronium molecular ion, H$_2$Cl$^+$, toward four bright submillimeter continuum sources: G29.96, W49N, W51, and W3(OH). With the use of the HIFI instrument on the Herschel Space Observatory, we observed the $2
Externí odkaz:
http://arxiv.org/abs/1505.00786
Autor:
Gupta, Harshal Dilip
This dissertation describes the theoretical, laboratory, and astronomical spectroscopy of negative molecular ions (anions), starting with the laboratory detection of the large carbon chain anion C₆H⁻ in the radio band and its identification in th
Externí odkaz:
http://hdl.handle.net/2152/ETD-UT-2009-12-426
Autor:
Crockett, Nathan R., Bergin, Edwin A., Neill, Justin L., Favre, Cécile, Schilke, Peter, Lis, Dariusz C., Bell, Tom A., Blake, Geoffrey, Cernicharo, José, Emprechtinger, Martin, Esplugues, Gisela B., Gupta, Harshal, Kleshcheva, Maria, Lord, Steven, Marcelino, Nuria, McGuire, Brett A., Pearson, John, Phillips, Thomas G., Plume, Rene, van der Tak, Floris, Tercero, Belén, Yu, Shanshan
We present a comprehensive analysis of a broad band spectral line survey of the Orion Kleinmann-Low nebula (Orion KL), one of the most chemically rich regions in the Galaxy, using the HIFI instrument on board the Herschel Space Observatory. This surv
Externí odkaz:
http://arxiv.org/abs/1405.2351
Autor:
Neufeld, David A., Roueff, Evelyne, Snell, Ronald L., Lis, Dariusz, Benz, Arnold O., Bruderer, Simon, Black, John H., De Luca, Massimo, Gerin, Maryvonne, Goldsmith, Paul F., Gupta, Harshal, Indriolo, Nick, Bourlot, Jacques Le, Petit, Franck Le, Larsson, Bengt, Melnick, Gary J., Menten, Karl M., Monje, Raquel, Nagy, Zsofia, Phillips, Thomas G., Sandqvist, Aage, Sonnentrucker, Paule, van der Tak, Floris, Wolfire, Mark G.
Using the Herschel Space Observatory's Heterodyne Instrument for the Far-Infrared (HIFI), we have observed para-chloronium (H2Cl+) toward six sources in the Galaxy. We detected interstellar chloronium absorption in foreground molecular clouds along t
Externí odkaz:
http://arxiv.org/abs/1201.2941
Autor:
Gerin, Maryvonne, De Luca, M., Black, John, Herbst, Eric, Goicoechea, Javier R., Falgarone, Edith, Godard, Benjamin, Pearson, John C., Lis, Dariucz C., Phillips, Thomas G., Bell, Thomas A., Sonnentrucker, Paule, Boulanger, Francois, Cernicharo, José, Coutens, Audrey, Dartois, Emmanuel, Encrenaz, Pierre, Giesen, Thomas, Goldsmith, Paul F., Gupta, Harshal, Gry, Cecile, Hennebelle, Patrick, Hily-Blant, Pierre, Joblin, Christine, Kazmierczak, Maja, Kolos, Robert, Krelowski, Jacek, Martin-Pintado, Jesus, Monje, Raquel, Mookerjea, Bhaswati, Pérault, Michel, Persson, Carina, Plume, René, Rimmer, Paul B., Salez, Morvan, Schmidt, Mirisloaw, Teyssier, David, Vastel, Charlotte, Yu, Shan Shan, Contursi, Alessandra, Menten, Karl, Geballe, Thomas, Schlemmer, Stephan, Shipman, Russ, Tielens, Alexander G. G. M., Philipp-May, Sabine, Cros, Alain, Zmuidzinas, Jonas, Samoska, L. A, Klein, K., Neufeld, D. A., Lorenzani, A., Stutzki, Jürgen
We report the detection of absorption lines by the reactive ions OH+, H2O+ and H3O+ along the line of sight to the submillimeter continuum source G10.6$-$0.4 (W31C). We used the Herschel HIFI instrument in dual beam switch mode to observe the ground
Externí odkaz:
http://arxiv.org/abs/1005.5653