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Akademický článek

Demonstration of a near-IR line-referenced electro-optical laser frequency comb for precision radial velocity measurements in astronomy

Autor: X. Yi, K. Vahala, J. Li, S. Diddams, G. Ycas, P. Plavchan, S. Leifer, J. Sandhu, G. Vasisht, P. Chen, P. Gao, J. Gagne, E. Furlan, M. Bottom, E. C. Martin, M. P. Fitzgerald, G. Doppmann, C. Beichman

Publikováno v: Nature Communications, Vol 7, Iss 1, Pp 1-9 (2016)

Laser frequency combs emit a spectrum of equally spaced peaks that can provide precise frequency references useful for astronomy. Here, the authors demonstrate a frequency comb using electro-optical modulation, which has a line spacing that is resolv

Externí odkaz: https://doaj.org/article/d7a6f97b6cbd4666b3cabe602c51948a

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Status and future developments of integrated photonic spectrographs for astronomy and Earth and planetary sciences

Autor: S. Leifer, Miguel Daal, C. A. Beichman, G. Vasisht, Michael D. Porter, Jeffrey Jewell, Nemanja Jovanovic, D. Mawet, Nick Cvetojevic, K. Wallace, Renan Moreira, Ben Mazin, Richard Dekany

Publikováno v: Photonic Instrumentation Engineering VII.

The size and cost of astronomical instruments for extremely large telescopes (ELTs), are pushing the limits of what is feasible, requiring optical components at the very edge of achievable size and performance. Operating at the diffraction-limit, the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d8dd083dc0fbc4d6f89a36d2febed14
https://doi.org/10.1117/12.2546959

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Solar PV interface to Grid-Tie Inverter with Current Referenced Boost Converter

Autor: Gautam A. Raiker, Subba Reddy B, Loganathan Umanand, S. G. Abines, Praveen C. Ramamurthy, Shama G. Vasisht

Publikováno v: ICIIS
Web of Science

A Solar Photovoltaic (PV) array may be interfaced with the Grid-Tie Inverter (GTI) either by direct connection or through a Boost Converter. In case of direct connection of PV with GTI the string voltage has to be maintained at the specified DC link

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e50d08adb582c0cc398df041da04b380
https://doi.org/10.1109/iciinfs.2018.8721313

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The new NESSI: refurbishment of a NIR MOS for characterizing exoplanets using the Hale telescope

Autor: Robert T. Zellem, Mark R. Swain, C. A. Jurgenson, F. Santoro, G. Vasisht, A. Olivares, Kyle A. Pearson, Michelle Creech-Eakman, C. Salcido, Luke M. Schmidt

Publikováno v: Ground-based and Airborne Instrumentation for Astronomy VII.

NESSI (New Mexico Exoplanet Spectroscopic Survey Instrument) was originally conceived, designed and built under a NASA NM-EPSCoR funded effort as a near-infrared multi-object spectrograph for characterizing exoplanet transits at the Magdalena Ridge O

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3001dd39893c7fda4c1a683f917cf1b9
https://doi.org/10.1117/12.2314242

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Planet formation imager: project update

Autor: Gerd Weigelt, Ernest A. Michael, Florentin Millour, Andrea Isella, Edward H. Wishnow, Kaitlin M. Kratter, Eric L. N. Jensen, Jean Baptiste Le Bouquin, Stephen T. Ridgway, Jean François Gonzalez, Rafael Millan-Gabet, Farzana Meru, David R. Ciardi, Neal J. Turner, Greg Laughlin, Cristina Ramos Almeida, Almudena Alonso-Herrero, S. F. Hoenig, Ming Zhao, Claudia Paladini, Zhaohuan Zhu, Amy Bonsor, O. Panić, L. H. Quiroga-Nuñez, Stephen R. Kane, Ruobing Dong, Stefano Minardi, Andrea Chiavassa, Stephen A. Rinehart, Amelia Bayo, T. ten Brummelaar, Jean Surdej, Alexander Wallace, Attila Juhasz, John D. Ilee, Benjamin J. S. Pope, Matthias R. Schreiber, Konrad R. W. Tristram, Jean Philippe Berger, Gerard T. van Belle, Willem Jan De Wit, Richard P. Nelson, Johan Olofsson, Joerg Uwe Pott, Michael J. Ireland, John Young, Fabien Baron, Mark Reynolds, Sean N. Raymond, Wilhelm Kley, Alessandro Morbidelli, Sebastian Wolf, Tabetha S. Boyajian, Michelle Creech-Eakman, Peter G. Tuthill, Gaspard Duchene, Chris Packham, S. Zúñiga-Fernández, Rene D. Oudmaijer, Sylvestre Lacour, Quentin Kral, Makoto Kishimoto, Lucas Labadie, G. Vasisht, Catherine Espaillat, Poshak Gandhi, Michael D. Smith, Denis Defrere, Andreas Morlok, Chris Mordasini, D. Mozurkewich, Keivan G. Stassun, John D. Monnier, Alexandre Gallenne, Zsolt Regaly, Stefan Kraus, Christopher A. Haniff, Romain Petrov, Markus Wittkowski

Publikováno v: Optical and Infrared Interferometry and Imaging VI-Proceedings of the SPIE, Volume 10701, id. 1070118 17 pp. (2018). 10-15 June 2018 Austin, Texas, United States
Optical and Infrared Interferometry and Imaging VI-Proceedings of the SPIE, Volume 10701, id. 1070118 17 pp. (2018). 10-15 June 2018 Austin, Texas, United States, Jun 2018, Austin, United States. ⟨10.1117/12.2312683⟩

The Planet Formation Imager (PFI) is a near- and mid-infrared interferometer project with the driving science goal of imaging directly the key stages of planet formation, including the young proto-planets themselves. Here, we will present an update o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::958ba94228d19c54e059636f5e6907d2
https://hal.archives-ouvertes.fr/hal-01901978

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