Results 301 to 310 of about 663,816 (320)

Modes of the Dark Ages 21 cm field accessible to a lunar radio interferometer. [PDF]

Philos Trans A Math Phys Eng Sci
Bull P, Guandalin C, Addis C.
europepmc   +1 more source

Technological Developments, Exercise Training Programs, and Clinical Outcomes in Cardiac Telerehabilitation in the Last Ten Years: A Systematic Review. [PDF]

Healthcare (Basel)
Garofano M, Vecchione C, Calabrese M, Rusciano MR, Visco V, Granata G, Carrizzo A, Galasso G, Bramanti P, Corallo F, Izzo C, Ciccarelli M, Bramanti A.   +12 more
europepmc   +1 more source

Direct single-molecule detection and super-resolution imaging with a low-cost portable smartphone-based microscope

Loretan M, Barella M, Fuchs N, Kocabey S, Kołątaj K, Stefani FD, Acuna GP.   +6 more
europepmc   +1 more source

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A repeating fast radio burst source localized to a nearby spiral galaxy

Nature, 2020
Fast radio bursts (FRBs) are brief, bright, extragalactic radio flashes1,2. Their physical origin remains unknown, but dozens of possible models have been postulated3. Some FRB sources exhibit repeat bursts4–7.
B. Marcote, K. Nimmo, K. Nimmo, J. Hessels, J. Hessels, S. Tendulkar, C. Bassa, Z. Paragi, A. Keimpema, M. Bhardwaj, R. Karuppusamy, V. Kaspi, C. Law, D. Michilli, K. Aggarwal, B. Andersen, A. Archibald, A. Archibald, K. Bandura, G. Bower, P. Boyle, C. Brar, S. Burke-Spolaor, B. Butler, T. Cassanelli, P. Chawla, P. Demorest, M. Dobbs, E. Fonseca, U. Giri, U. Giri, D. Good, K. Gourdji, A. Josephy, A. Kirichenko, A. Kirichenko, F. Kirsten, T. Landecker, D. Lang, T. Lazio, D. Li, H.-H. Lin, J. Linford, K. Masui, J. Mena-Parra, A. Naidu, C. Ng, C. Patel, Ue-Li Pen, Z. Pleunis, M. Rafiei-Ravandi, Mubdi Rahman, A. Renard, P. Scholz, P. Scholz, S. Siegel, Kendrick M. Smith, I. Stairs, K. Vanderlinde, A. Zwaniga   +59 more
semanticscholar   +1 more source

A short γ-ray burst apparently associated with an elliptical galaxy at redshift z = 0.225

Nature, 2005
Gamma-ray bursts (GRBs) come in two classes: long (> 2 s), soft-spectrum bursts and short, hard events. Most progress has been made on understanding the long GRBs, which are typically observed at high redshift (z ≈ 1) and found in subluminous star ...
N. Gehrels, C. Sarazin, P. O’Brien, Bing Zhang, L. Barbier, S. Barthelmy, A. Blustin, D. Burrows, J. Cannizzo, J. Cannizzo, J. Cummings, J. Cummings, M. Goad, S. Holland, S. Holland, C. Hurkett, J. Kennea, A. Levan, C. Markwardt, C. Markwardt, K. Mason, P. Mészáros, M. Page, D. Palmer, E. Rol, T. Sakamoto, T. Sakamoto, R. Willingale, L. Angelini, L. Angelini, A. Beardmore, P. Boyd, P. Boyd, A. Breeveld, S. Campana, M. Chester, G. Chincarini, G. Chincarini, L. Cominsky, G. Cusumano, M. Pasquale, E. Fenimore, P. Giommi, C. Gronwall, D. Grupe, J. Hill, D. Hinshaw, J. Hjorth, D. Hullinger, D. Hullinger, K. Hurley, S. Klose, S. Kobayashi, C. Kouveliotou, H. Krimm, H. Krimm, V. Mangano, F. Marshall, K. McGowan, A. Moretti, R. Mushotzky, K. Nakazawa, J. Norris, J. Nousek, J. Osborne, K. Page, A. Parsons, Sandeep K. Patel, M. Perri, T. Poole, P. Romano, P. Roming, S. Rosen, G. Sato, P. Schady, A. Smale, J. Sollerman, R. Starling, M. Still, M. Still, Masaya Suzuki, G. Tagliaferri, Tadayuki Takahashi, M. Tashiro, J. Tueller, A. Wells, N. White, R. Wijers   +87 more
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A massive star origin for an unusual helium-rich supernova in an elliptical galaxy

Nature, 2009
The unusual helium-rich (type Ib) supernova SN 2005E is distinguished from all supernovae hitherto observed by its faint and rapidly fading light curve, prominent calcium lines in late-phase spectra and lack of any mark of recent star formation near the ...
K. Kawabata, K. Maeda, K. Nomoto, S. Taubenberger, Masaomi Tanaka, Masaomi Tanaka, J. Deng, E. Pian, T. Hattori, K. Itagaki   +9 more
semanticscholar   +1 more source

Dynamics of early type galaxies. I. The rotation curve of the elliptical galaxy NGC 4697

, 1975
The rotation curve, up to 0/sup prime/.6 from the center, has been derived from Ca ii H and K lines for the elliptical galaxy NGC 4697. A maximum seems to be reached at 15'' with 65 km s$sup -1$.
F. Bertola, M. Capaccioli
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Dynamics of Elliptical Galaxies

Science, 1993
Elliptical galaxies were once thought to be similar in their structure and dynamics to rotationally flattened bodies like stars. The discovery that elliptical galaxies rotate much more slowly than a fluid body with the same shape has led to a qualitative change in our understanding of the dynamics of these systems.
openaire   +3 more sources

Electron Temperature in the Elliptical Galaxy NGC 1052

, 1976
Image-dissector scanner observations of the emission-line spectrum of NGC 1052 are discussed. The scan of the elliptical galaxy NGC 584 is used to remove the integrated stellar absorption-line features from the spectrum of NGC 1052.
A. Koski, D. Osterbrock
semanticscholar   +1 more source

Anatomy of elliptical galaxies

Nature, 2009
The family of elliptical galaxies is remarkable for the structural regularity of its members. Inspecting irregularities in this regularity could help in understanding how these galaxies form.
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