Results 31 to 40 of about 210,357 (290)

B-mode Detection with an Extended Planck Mission

, 2009
The Planck satellite has a nominal mission lifetime of 14 months allowing two complete surveys of the sky. Here we investigate the potential of an extended Planck mission of four sky surveys to constrain primordial B-mode anisotropies in the presence of ...
, A. Kogut ., A. Pontzen, A.D. Linde, A.R. Liddle, B.P. Crill ., C.E. North ., C.L. Reichardt ., CMBPol Study Team collaboration, D.H. Lyth, G Efstathiou, G. Efstathiou, H.K. Eriksen, J. Bock ., K.M. Gorski ., L. McAllister, M. Cruz, M. Zaldarriaga ., M.D. Seiffert ., R. Kallosh, S Gratton, The Planck collaboration, V. Mukhanov, WMAP collaboration, WMAP collaboration, WMAP collaboration, WMAP collaboration   +26 more
core   +1 more source

Electronic Optical Sky Surveys [PDF]

Symposium - International Astronomical Union, 1997
The introduction of of Charge Coupled Devices (CCDs) in the middle 1970s provided astronomy with nearly perfect (linear, high-sensitivity, low-noise, high dynamic-range, digital) optical detectors. Unfortunately, restrictions imposed by CCD production and cost has typically limited their use to observations of relatively small fields.
openaire   +1 more source

The Dark Energy Camera Plane Survey 2 (DECaPS2): More Sky, Less Bias, and Better Uncertainties

The Astrophysical Journal Supplement Series, 2023
Deep optical and near-infrared imaging of the entire Galactic plane is essential for understanding our Galaxy’s stars, gas, and dust. The second data release of the Dark Energy Camera (DECam) Plane Survey extends the five-band optical and near-infrared ...
Andrew K. Saydjari, Edward F. Schlafly, Dustin Lang, Aaron M. Meisner, Gregory M. Green, Catherine Zucker, Ioana Zelko, Joshua S. Speagle, Tansu Daylan, Albert Lee, Francisco Valdes, David Schlegel, Douglas P. Finkbeiner   +12 more
doaj   +1 more source

Searching for New Supernova Remnant Candidates from the VTSS Survey

Cumhuriyet Science Journal, 2022
The Virginia Tech Spectral Line Survey (VTSS) Galactic Plane Hydrogen-Alpha Survey has the strong ability to search and discover many different types of objects that cannot be identified clearly on red plates and by other Multi-Wavelength Sky Surveys ...
Elif Beklen
doaj   +1 more source

Survey strategy optimization for the Atacama Cosmology Telescope [PDF]

, 2016
In recent years there have been significant improvements in the sensitivity and the angular resolution of the instruments dedicated to the observation of the Cosmic Microwave Background (CMB).
Alonso, D., Bond, J. R., Calabrese, E., Choi, S. K., Crowley, K. T., De Bernardis, F., Devlin, M., Dunkley, J., Gallardo, P. A., Hasselfield, M., Henderson, S. W., Hilton, M., Hlozek, R., Ho, S. P., Huffenberger, K., Koopman, B. J., Kosowsky, A., Louis, T., Madhavacheril, M. S., McMahon, J., Naess, S., Nati, F., Newburgh, L., Niemack, M. D., Page, L. A., Salatino, M., Schillaci, A., Schmitt, B. L., Sehgal, N., Sievers, J. L., Simon, S. M., Spergel, D. N., Staggs, S. T., Stevens, J. R., van Engelen, A., Vavagiakis, E. M., Wollack, E. J.   +36 more
core   +2 more sources

Procedures for Constraining Robotic Fiber Positioning for Highly Multiplexed Spectroscopic Surveys: The Case of FPS for SDSS-V

The Astronomical Journal
One crucial aspect of planning any large scale astronomical survey is constructing an observing strategy that maximizes reduced data quality. This is especially important for surveys that are rather heterogeneous and broad-ranging in their science goals.
Ilija Medan, Tom Dwelly, Kevin R. Covey, Eleonora Zari, Michael R. Blanton, Joleen K. Carlberg, S. Drew Chojnowski, Alexander Ji, Yue Shen, John Donor, José Sánchez-Gallego, Sean Morrison, Héctor J. Ibarra-Medel, Conor Sayres, Keivan G. Stassun   +14 more
doaj   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

FEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli, Mohammad Nour Alsamsam, Ugnė Bagdonaitė, Van Truc Vu, Chun‐Jen Huang, Polina Kuzhir, Mindaugas Zaremba, Aurimas Kopūstas, Marijonas Tutkus   +8 more
wiley   +1 more source

A Spherical Harmonic Analysis of Redshift Space [PDF]

, 1994
We re-examine the effects of redshift space distortion in all-sky galaxy redshift surveys in the formalism of spherical harmonics. Within this framework we show how one can treat both the large-scale linear effects, and the small-scale nonlinear ...
Heavens, A. F., Taylor, A. N.
core   +2 more sources

The All-Sky 408 MHz Survey [PDF]

Symposium - International Astronomical Union, 1981
The 408 MHz All-sky Survey has been made from four radio continuum surveys observed between 1965 and 1978, using the Jodrell Bank MKI telescope, the Effelsberg 100 metre telescope and the Parkes 64 metre telescope. A detailed description of the survey data reduction and calibration methods, with preliminary astronomical results will soon be published ...
C. G. T. Haslam, C. J. Salter, H. Stoffel   +2 more
openaire   +1 more source

Preatmospheric Detection of a Meter-sized Earth Impactor

The Planetary Science Journal, 2023
On 2020 September 18 U.S. Government (USG) sensors detected a bolide with peak bolometric magnitude of −19 over the Western Pacific. The impact was also detected by the Geostationary Lightning Mapper instrument on the GOES-17 satellite and infrasound ...
David L. Clark, Paul A. Wiegert, Peter G. Brown, Denis Vida, Aren Heinze, Larry Denneau   +5 more
doaj   +1 more source