Autor: Hewitt, A. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Droplet size classification of air induction flat fan nozzles
Autorzy:: Czaczyk, Z.
Kruger, G.
Hewitt, A.
Tematy:: droplet size
spray classification
air induction nozzle
flat fan nozzle
working parameter; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/65996.pdf Link otwiera się w nowym oknie
Opis:: Measurements were made of the droplet size for a series of air induction flat fan nozzles produced by Marian Mikołajczak Agro Technology (MMAT) and Coorstek. The MMAT nozzles, according to International Organization for Standardization (ISO) standard sizes, are typical single jet (long body, 37 mm) with 025, 03, and 04 orifice sizes; (short body, 21 mm) with 02, 025, 03 and 04 orifice sizes; and twin jet (short body, 21 mm) with 03 and 04 orifice sizes. Ceramic air induction flat fan nozzles of the Albuz AVI series (Coorstek, France) with the orifice size 01, 02 and 03 were tested. The sprays were described using the following droplet size parameters: Dv10, Dv50, Dv90, relative span (RS), spray volume (%) in size fractions < 100 μm and 100÷200 μm. The sprays were also classified according to American Society of Agricultural Engineers (ASAE) standard S572.1 (ASAE 2009).
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: Wind tunnel flux comparisons using a phase Doppler interferometer
Autorzy:: Roten, R.L.
Post, S.L.
Werner, A.
Safa, M.
Hewitt, A.J.
Tematy:: wind tunnel
flux measurement
Doppler interferometer
phase Doppler system
droplet; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/65512.pdf Link otwiera się w nowym oknie
Opis:: It is essential to know the movement of droplets in time and space (i.e. flux) when measuring and/or predicting spray drift in agricultural application. A study was performed to assess the flux measurements of a phase Doppler system against a standard monofilament system in a wind tunnel. The primary objectives of the study were to compare flux from a new phase Doppler system against 1.7 mm cotton and 2.0 mm nylon strings at varying wind speeds (1.4, 4.2, 8.3, 12.5, and 16.7 m ⋅ s–1) and spray exposures times (5, 10, 15, 30, and 60 s) with an overarching hypothesis that the active, phase Doppler is able to accurately measure the flux regardless of exposure and spray mass whereas the static string samplers are limited to a maximum retention. The phase Doppler did measure linearly as expected, however strings did not reach a point in which they loss mass; conversely, they appeared to overload with saturation. These findings are believed to be among many variables which influence the variability of previous mass balance studies.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: Maastrichtian Ceratisepia and Mesozoic cuttlebone homeomorphs
Mastrychcka Ceratisepia oraz mezozoiczne homeomorfy
Autorzy:: Hewitt, R A
Jagt, J W M
Tematy:: fauna kopalna
mezozoik
Spirulida
Loligosepia
Ceratisepia vanknippenbergi
Actinosepia
Trachyteuthis
Octobrachia
muszle
Sepiida
homeomorfy
taksony
paleontologia
mikrostruktura
szkielet
muszle embrionalne
Pearceiteuthis
matwy; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Powiązania:: https://bibliotekanauki.pl/articles/21399.pdf Link otwiera się w nowym oknie
Opis:: The phylogenetics of potential Mesozoic ancestors of cuttlefish of a restricted order Sepiida von Zittel, 1895 (superorder Decabrachia Boettger, 1952) is reviewed. Microstructural studies of Mesozoic homeomorphs of cuttlebones (Pearceiteuthis gen. n., Loligosepia, Trachyteuthis, Actinosepia) are consistent with their assignement to the superorder Octobrachia Fioroni, 1981. The discovery of an embryonic Ceratisepia shell in the upper Maastrichtian of the Netherlands, indicates that true Sepiida did have a pre-Cenozoic origin. Cretaceous decabrachs of the order Spirulida Stolley, 1919 do not show evidence of the dorso-anterior shell growth vectors seen in Cenozoic spirulids, sepiids and octobrachs. Separate origins of the Sepiida and Spirulida within Cretaceous diplobelinid belemnites is still the most attractive hypothesis. Ceratisepia vanknippenbergi sp. n. from the upper Maastrichtian of the Netherlands and Pearceiteuthis buyi gen. et sp. n. from the Callovian of England are described.
Dokonano przeglądu potencjalnych mezozoicznych przodków mątw (rzqd Sepiida von Zittel, 1859 sensu stricto; nadrząd Decabrachia Boettger, 1952). Wyniki badań mikrostruktur szkieletów mezozoicznych homeomorfów mątw (Pearceiteuthis gen. n., Loligosepia, Trachyteuthis, Actinosepia) potwierdzają ich przynalezność do nadrzędu Octobrachia Fioroni, 1981. Znalezisko embrionalnej muszli Ceratisepia w osadach górnego mastrychtu Holandii wskazuje, że Sepiida powstały przez kenozoikiem. Kredowe dziesięciornice z rzędu Spirulida Stolley, 1919 nie wykazują grzbietowo-przednich wektorów wzrostu muszli, które można obserwować u kenozoicznych spirul, mątw oraz ośmiornic. Hipoteza głosząca, ze Sepiida oraz Spirulida wyodrębniły się niezależnie z kredowych diplobelinidowych belemnitów jest wciąż najbardziej atrakcyjnym wyjaśnieniem pochodzenia obu tych grup. Opisano dwa nowe taksony: Ceratisepia vanknippenbergi sp. n. z górnego mastrychtu Holandii oraz Pearceiteuthis buyi gen. et sp. n. z keloweju Anglii.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: Developing a comprehensive Drift Reduction Technology risk assessment scheme
Autorzy:: Ferguson, J.C.
Hewitt, A.J.
Eastin, J.A.
Connell, R.J.
Roten, R.L.
Kruger, G.R.
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/66266.pdf Link otwiera się w nowym oknie
Opis:: Drift Reduction Technologies (DRTs) are becoming increasingly important for improving spray applications in many countries including New Zealand (NZ). Although there is a growing database on the performance of DRTs, there is no rating system showing the effectiveness of the DRT’s performance. In Europe, DRTs are classified relative to current reference technologies as part of the rating systems used to establish spray drift risk reduction. We have recommended some key elements of such a comprehensive exposure risk reduction scheme for any country, based on prior and on-going research into the performance of specific DRTs in row, tree, and vine crops. Our intention was to create a rating system to determine the effectiveness of a given technology. This rating system would improve spray application practices and environmental stewardship for a wide range of crops and application scenarios.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 5.

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: The First Fermi-LAT catalog of sources above 10 GeV
Autorzy:: Romani, R. W.
Murgia, S.
Dermer, C. D.
Porter, T. A.
Horan, D.
Mayer, M.
Vasileiou, V.
Hadasch, D.
Johnson, T. J.
Brigida, M.
Bloom, E. D.
Ferrara, E. C.
Reposeur, T.
Gehrels, N.
Morselli, A.
Moiseev, A. A.
Thayer, J. B.
Vitale, V.
Chekhtman, A.
Chiang, J.
Knödlseder, J.
Rainò, S.
Cecchi, C.
Bonamente, E.
Usher, T. L.
Roth, M.
Hanabata, Y.
Bernieri, E.
Ciprini, S.
Drlica-Wagner, A.
Hill, A. B.
Orienti, M.
Michelson, P. F.
Focke, W. B.
Guiriec, S.
Tibaldo, L.
Hays, E.
Favuzzi, C.
Reimer, O.
Ritz, S.
Johnson, W. N.
Moskalenko, I. V.
Tosti, G.
Conrad, J.
Larsson, S.
Mehault, J.
Jóhannesson, G.
Caraveo, P. A.
Kamae, T.
Godfrey, G.
Baldini, L.
Hayashida, M.
Belfiore, A.
Mazziotta, M. N.
Brandt, T. J.
Perkins, J. S.
Giordano, F.
D'Ammando, F.
Johnson, A. S.
Lott, B.
Stawarz, Łukasz
Cominsky, L. R.
Drell, P. S.
Giommi, P.
Hewitt, J.
Mizuno, T.
Troja, E.
Gasparrini, D.
Reimer, A.
Spinelli, P.
Digel, S. W.
Fusco, P.
Ajello, M.
Franckowiak, A.
Nuss, E.
Parkinson, P. M. Saz
Giroletti, M.
Kuss, M.
Uchiyama, Y.
Sgrò, C.
Giglietto, N.
Bellazzini, R.
Angelis, A. de
Piron, F.
Torres, D. F.
Spandre, G.
Funk, S.
Palma, F. de
Cavazzuti, E.
Pivato, G.
Smith, D. A.
Ohsugi, T.
Werner, M.
Strong, A. W.
Pesce-Rollins, M.
Vianello, G.
Wood, M.
Charles, E.
Massaro, E.
Grenier, I. A.
Thayer, J. G.
Cohen-Tanugi, J.
Gomez-Vargas, G. A.
Lubrano, P.
Cheung, C. C.
Cutini, S.
Burnett, T. H.
Fortin, P.
Schulz, A.
Allafort, A.
Jogler, T.
Lemoine-Goumard, M.
Barbiellini, G.
Monzani, M. E.
Fegan, S. J.
Gargano, F.
Razzano, M.
Winer, B. L.
Vandenbroucke, J.
Wood, K. S.
Caliandro, G. A.
Kataoka, J.
Claus, R.
Ballet, J.
Loparco, F.
Tinivella, M.
Bregeon, J.
Ackermann, M.
Germani, S.
Buson, S.
Kawano, T.
Bissaldi, E.
Takahashi, H.
Lovellette, M. N.
Chiaro, G.
Hughes, R. E.
Nemmen, R.
Chaves, R. C. G.
Bechtol, K.
Cameron, R. A.
Thompson, D. J.
Desiante, R.
Casandjian, J. M.
Lande, J.
McEnery, J. E.
Venere, L. Di
Suson, D. J.
Siskind, E. J.
Bastieri, D.
Latronico, L.
Longo, F.
Campana, R.
Bruel, P.
Paneque, D.
Atwood, W. B.
Okumura, A.
Ormes, J. F.
Harding, A. K.
Buehler, R.
Opis:: We present a catalog of $\gamma$-ray sources at energies above 10 GeV based on data from the Large Area Telescope (LAT) accumulated during the first 3 yr of the Fermi Gamma-ray Space Telescope mission. The first Fermi-LAT catalog of >10 GeV sources (1FHL) has 514 sources. For each source we present location, spectrum, a measure of variability, and associations with cataloged sources at other wavelengths. We found that 449 (87%) could be associated with known sources, of which 393 (76% of the 1FHL sources) are active galactic nuclei. Of the 27 sources associated with known pulsars, we find 20 (12) to have significant pulsations in the range >10 GeV (>25 GeV). In this work we also report that, at energies above 10 GeV, unresolved sources account for 27% $\pm$ 8% of the isotropic $\gamma$-ray background, while the unresolved Galactic population contributes only at the few percent level to the Galactic diffuse background. We also highlight the subset of the 1FHL sources that are best candidates for detection at energies above 50-100 GeV with current and future ground-based $\gamma$-ray observatories.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: The spectrum and morphology of the "Fermi" bubbles
Autorzy:: Schulz, A.
Funk, S.
Loparco, F.
Orlando, E.
Hays, E.
Wood, K. S.
Tinivella, M.
D'Ammando, F.
Schaal, M.
McEnery, J. E.
Zaharijas, G.
Baldini, L.
Omodei, N.
Panetta, J. H.
Pesce-Rollins, M.
Petrosian, V.
Hewitt, J. W.
Thayer, J. B.
Ohsugi, T.
Bissaldi, E.
Digel, S. W.
Ormes, J. F.
Bruel, P.
Reimer, A.
Winer, B. L.
Hadasch, D.
Perkins, J. S.
Bloom, E. D.
Hou, X.
Kamae, T.
Lubrano, P.
Cecchi, C.
Takahashi, H.
Bottacini, E.
Wood, M.
Tosti, G.
Mayer, M.
Gomez-Vargas, G. A.
Albert, A.
Jogler, T.
Siskind, E. J.
Malyshev, D.
Atwood, W. B.
Mizuno, T.
Suson, D. J.
Fusco, P.
Tahara, M.
Palma, F. de
Johnson, W. N.
Kataoka, J.
Spinelli, P.
Buehler, R.
Johnson, A. S.
Rando, R.
Bellazzini, R.
Longo, F.
Massaro, F.
Barbiellini, G.
Silva, E. do Couto e
Ballet, J.
Razzaque, S.
Bastieri, D.
Lovellette, M. N.
Nemmen, R.
Franckowiak, A.
Guiriec, S.
Sánchez-Conde, M.
Bregeon, J.
Monzani, M. E.
Grenier, I. A.
Gasparrini, D.
Mazziotta, M. N.
Giordano, F.
Moskalenko, I. V.
Fukazawa, Y.
Michelson, P. F.
Piron, F.
Ferrara, E. C.
Rainò, S.
Buson, S.
Kuss, M.
Ciprini, S.
Morselli, A.
Cohen-Tanugi, J.
Caraveo, P. A.
Uchiyama, Y.
Pivato, G.
Orienti, M.
Sgrò, C.
Cavazzuti, E.
Stawarz, Łukasz
Spandre, G.
Murgia, S.
Gargano, F.
Brandt, T. J.
Chiang, J.
Cutini, S.
Jóhannesson, G.
Larsson, S.
Manfreda, A.
Kocevski, D.
Germani, S.
Charles, E.
Paneque, D.
Caliandro, G. A.
Conrad, J.
Ackermann, M.
Venere, L. Di
Angelis, A. de
Reimer, O.
Claus, R.
Harding, A. K.
Knödlseder, J.
Giroletti, M.
Cameron, R. A.
Focke, W. B.
Werner, M.
Godfrey, G.
Troja, E.
Razzano, M.
Chekhtman, A.
Vianello, G.
Dermer, C. D.
Mitthumsiri, W.
Favuzzi, C.
Strong, A. W.
Chiaro, G.
Torres, D. F.
Drell, P. S.
Giglietto, N.
Latronico, L.
Nuss, E.
Tibaldo, L.
Blandford, R. D.
Caragiulo, M.
Opis:: The Fermi bubbles are two large structures in the gamma-ray sky extending to $55^{\circ}$ above and below the Galactic center. We analyze 50 months of Fermi Large Area Telescope data between 100 MeV and 500 GeV above $10^{\circ}$ in Galactic latitude to derive the spectrum and morphology of the Fermi bubbles. We thoroughly explore the systematic uncertainties that arise when modeling the Galactic diffuse emission through two separate approaches. The gamma-ray spectrum is well described by either a log parabola or a power law with an exponential cutoff. We exclude a simple power law with more than 7\sigma significance. The power law with an exponential cutoff has an index of 1.9 $\pm$ 0.2 and a cutoff energy of 110 $\pm$ 50 GeV. We find that the gamma-ray luminosity of the bubbles is $4.4_{-0.9}^{+2.4}\times 10^{37} erg s^{-1}$. We confirm a significant enhancement of gamma-ray emission in the southeastern part of the bubbles, but we do not find significant evidence for a jet. No significant variation of the spectrum across the bubbles is detected. The width of the boundary of the bubbles is estimated to be$ 3.4_{-2.6}^{+3.7}$ deg. Both inverse Compton (IC) models and hadronic models including IC emission from secondary leptons fit the gamma-ray data well. In the IC scenario, synchrotron emission from the same population of electrons can also explain the WMAP and Planck microwave haze with a magnetic field between 5 and 20 $\mu$ G.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 8.

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: The third catalog of active galactic nuclei detected by the Fermi Large Area Telescope
Autorzy:: Schulz, A.
Sokolovsky, K. V.
Loparco, F.
Orlando, E.
Wood, K. S.
Ohno, M.
Schaal, M.
McEnery, J. E.
Baldini, L.
Furniss, A. K.
Omodei, N.
Pesce-Rollins, M.
Thayer, J. B.
Hewitt, J. W.
Ohsugi, T.
Bissaldi, E.
Digel, S. W.
Bruel, P.
Blandford, R. D.
Reimer, A.
Madejski, G. M.
Winer, B. L.
Perkins, J. S.
Bloom, E. D.
Takahashi, H.
Lubrano, P.
Cecchi, C.
Gonzalez, J. Becerra
Giommi, P.
Li, L.
Bottacini, E.
Tosti, G.
Lott, B.
Mayer, M.
Siskind, E. J.
Hill, A. B.
Thayer, J. G.
Atwood, W. B.
Mizuno, T.
Krauss, F.
Porter, T. A.
Suson, D. J.
Glanzman, T.
Fusco, P.
Ajello, M.
Johnson, W. N.
Kawano, T.
Kataoka, J.
Spinelli, P.
Buehler, R.
Johnson, A. S.
Rando, R.
Bellazzini, R.
Torresi, E.
Longo, F.
Barbiellini, G.
Ballet, J.
Razzaque, S.
Paggi, A.
Bastieri, D.
Itoh, R.
Lovellette, M. N.
Salvetti, D.
Moiseev, A. A.
Franckowiak, A.
Guiriec, S.
Britto, R. J.
Bregeon, J.
Monzani, M. E.
Grenier, I. A.
Gasparrini, D.
Mazziotta, M. N.
Giordano, F.
Moskalenko, I. V.
Fukazawa, Y.
Schinzel, F. K.
Michelson, P. F.
D’Abrusco, R.
Desiante, R.
Piron, F.
Cominsky, L. R.
Ferrara, E. C.
Rainò, S.
Takahashi, T.
Buson, S.
Kuss, M.
Ciprini, S.
Morselli, A.
Cohen-Tanugi, J.
Ojha, R.
Caraveo, P. A.
Uchiyama, Y.
Pivato, G.
Orienti, M.
Sgrò, C.
Cavazzuti, E.
Carpenter, B.
Stawarz, Łukasz
Spandre, G.
Murgia, S.
Gargano, F.
Bonino, R.
Brandt, T. J.
Chiang, J.
Cutini, S.
Jóhannesson, G.
Larsson, S.
Casandjian, J. M.
Paneque, D.
Charles, E.
Spada, F.
Cheung, C. C.
Conrad, J.
Ackermann, M.
Venere, L. Di
Angelis, A. de
Reimer, O.
Claus, R.
Mura, G. La
Romani, R. W.
Fuhrmann, L.
Giroletti, M.
Cameron, R. A.
Focke, W. B.
Godfrey, G.
Troja, E.
Razzano, M.
Chekhtman, A.
Fegan, S. J.
Tanaka, Y.
Vianello, G.
Favuzzi, C.
Grove, J. E.
Finke, J.
Horan, D.
Chiaro, G.
Leto, C.
Li, J.
Torres, D. F.
Drell, P. S.
Giglietto, N.
Latronico, L.
Zimmer, S.
D’Ammando, F.
Nuss, E.
Tibaldo, L.
Caliandro, G. A.
Caragiulo, M.
Opis:: The third catalog of active galactic nuclei (AGNs) detected by the Fermi-LAT (3LAC) is presented. It is based on the third Fermi-LAT catalog (3FGL) of sources detected between 100 MeV and 300 GeV with a Test Statistic greater than 25, between 2008 August 4 and 2012 July 31. The 3LAC includes 1591 AGNs located at high Galactic latitudes $(\left | b \right | > 10^\circ )$, a 71% increase over the second catalog based on 2 years of data. There are 28 duplicate associations, thus 1563 of the 2192 high-latitude gamma-ray sources of the 3FGL catalog are AGNs. Most of them (98%) are blazars. About half of the newly detected blazars are of unknown type, i.e., they lack spectroscopic information of sufficient quality to determine the strength of their emission lines. Based on their gamma-ray spectral properties, these sources are evenly split between flat-spectrum radio quasars (FSRQs) and BL Lacs. The most abundant detected BL Lacs are of the high-synchrotron-peaked (HSP) type. About 50% of the BL Lacs have no measured redshifts. A few new rare outliers (HSP-FSRQs and high-luminosity HSP BL Lacs) are reported. The general properties of the 3LAC sample confirm previous findings from earlier catalogs. The fraction of 3LAC blazars in the total population of blazars listed in BZCAT remains non-negligible even at the faint ends of the BZCAT-blazar radio, optical, and X-ray flux distributions, which hints that even the faintest known blazars could eventually shine in gamma-rays at LAT-detection levels. The energy-flux distributions of the different blazar populations are in good agreement with extrapolation from earlier catalogs.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 10.

Tytuł:: Fermi establishes classical novae as a distinct class of gamma-ray sources
Autorzy:: Caragiulo, M.
Wood, D. L.
Murgia, S.
Dermer, C. D.
Porter, T. A.
Mayer, M.
Hadasch, D.
Bloom, E. D.
Corbet, R. H. D.
Ferrara, E. C.
Reposeur, T.
Morselli, A.
Thayer, J. B.
Wolff, M. T.
Massaro, F.
Di Venere, L.
Chekhtman, A.
Chiang, J.
Knödlseder, J.
Rainò, S.
Edlin, J. P.
Razzaque, S.
Ciprini, S.
Drlica-Wagner, A.
Hill, A. B.
Orienti, M.
Michelson, P. F.
Focke, W. B.
Guiriec, S.
Manfreda, A.
Tibaldo, L.
Hays, E.
Favuzzi, C.
Reimer, O.
Johnson, W. N.
Moskalenko, I. V.
Tosti, G.
Conrad, J.
Larsson, S.
Shore, S. N.
Jóhannesson, G.
Caraveo, P. A.
Schwarz, G. J.
Fukazawa, Y.
Godfrey, G.
Baldini, L.
Rando, R.
Hayashida, M.
Mazziotta, M. N.
Brandt, T. J.
Perkins, J. S.
Giordano, F.
D'Ammando, F.
Johnson, A. S.
Lott, B.
Stawarz, Łukasz
Drell, P. S.
Mizuno, T.
Bottacini, E.
Troja, E.
Gasparrini, D.
Reimer, A.
Hewitt, J. W.
De Gennaro Aquino, I.
Spinelli, P.
Digel, S. W.
Fusco, P.
Ajello, M.
Franckowiak, A.
Nuss, E.
Fuhrmann, L.
Giroletti, M.
Kuss, M.
Uchiyama, Y.
Sgrò, C.
Giglietto, N.
Bellazzini, R.
Piron, F.
Torres, D. F.
Spandre, G.
Donato, D.
den Hartog, P. R.
Charbonnel, S.
Cavazzuti, E.
Pivato, G.
Saz Parkinson, P. M.
Mason, E.
Hou, X.
Ohsugi, T.
Mitthumsiri, W.
Schaal, M.
Pesce-Rollins, M.
de Palma, F.
Vianello, G.
Wood, M.
Charles, E.
Martin, P.
Glanzman, T.
Grenier, I. A.
Thayer, J. G.
Cohen-Tanugi, J.
de Angelis, A.
do Couto e Silva, E.
Omodei, N.
Lubrano, P.
Cheung, C. C.
Tanaka, T.
Panetta, J. H.
Schulz, A.
Jogler, T.
Lemoine-Goumard, M.
Barbiellini, G.
Monzani, M. E.
Gargano, F.
Razzano, M.
Winer, B. L.
Wood, K. S.
Caliandro, G. A.
Claus, R.
Ballet, J.
Loparco, F.
Tinivella, M.
Orlando, E.
Blandford, R. D.
Bregeon, J.
Ackermann, M.
Kerr, M.
Germani, S.
Buson, S.
Takahashi, H.
Bissaldi, E.
Corbel, S.
Lovellette, M. N.
Grove, J. E.
Chiaro, G.
Nemmen, R.
Starrfield, S.
Cameron, R. A.
Thompson, D. J.
Jean, P.
Desiante, R.
McEnery, J. E.
Suson, D. J.
Albert, A.
Siskind, E. J.
Bastieri, D.
Teyssier, F.
Latronico, L.
Longo, F.
Bruel, P.
Paneque, D.
Ormes, J. F.
Harding, A. K.
Buehler, R.
Opis:: A classical nova results from runaway thermonuclear explosions on the surface of a white dwarf that accretes matter from a low-mass main-sequence stellar companion. In 2012 and 2013, three novae were detected in gamma rays and stood in contrast to the first gamma-ray–detected nova V407 Cygni 2010, which belongs to a rare class of symbiotic binary systems. Despite likely differences in the compositions and masses of their white dwarf progenitors, the three classical novae are similarly characterized as soft-spectrum transient gamma-ray sources detected over 2- to 3-week durations. The gamma-ray detections point to unexpected high-energy particle acceleration processes linked to the mass ejection from thermonuclear explosions in an unanticipated class of Galactic gamma-ray sources.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Informacja

Wyszukujesz frazę "Hewitt, A." wg kryterium: Autor