Zobrazeno 1 - 10
of 597
pro vyhledávání: '"Hooper, E"'
Autor:
The 2023 Windows on the Universe Workshop White Paper Working Group, Ahumada, T., Andrews, J. E., Antier, S., Blaufuss, E., Brady, P. R., Brazier, A. M., Burns, E., Cenko, S. B., Chandra, P., Chatterjee, D., Corsi, A., Coughlin, M. W., Coulter, D. A., Fu, S., Goldstein, A., Guy, L. P., Hooper, E. J., Howell, S. B., Humensky, T. B., Kennea, J. A., Jarrett, S. M., Lau, R. M., Lewis, T. R., Lu, L., Matheson, T., Miller, B. W., Narayan, G., Nikutta, R., Rajagopal, J. K., Rest, A., Ruiz-Rocha, K. M., Runnoe, J., Sand, D. J., Santander, M., Solares, H. A. A., Soraisam, M. D., Street, R. A., Tohuvavohu, A., Vieira, J., Vieregg, A., Vigeland, S. J., Vitale, S., White, N. E., Wyatt, S. D., Yuan, T.
In this White Paper, we present recommendations for the scientific community and funding agencies to foster the infrastructure for a collaborative multi-messenger and time-domain astronomy (MMA/TDA) ecosystem. MMA/TDA is poised for breakthrough disco
Externí odkaz:
http://arxiv.org/abs/2401.02063
Autor:
Todt, H., Kniazev, A. Y., Gvaramadze, V. V., Hamann, W. -R., Buckley, D., Crause, L., Crawford, S. M., Gulbis, A. A. S., Hettlage, C., Hooper, E., Husser, T. -O., Kotze, P., Loaring, N., Nordsieck, K. H., O'Donoghue, D., Pickering, T., Potter, S., Romero-Colmenero, E., Vaisanen, P., Williams, T., Wolf, M.
A considerable fraction of the central stars of planetary nebulae (CSPNe) are hydrogen-deficient. Almost all of these H-deficient central stars (CSs) display spectra with strong carbon and helium lines. Most of them exhibit emission line spectra rese
Externí odkaz:
http://arxiv.org/abs/1301.1944
Autor:
Milisavljevic, D., Margutti, R., Soderberg, A. M., Pignata, G., Chomiuk, L., Fesen, R., Bufano, F., Sanders, N. E., Parrent, J. T., Parker, S., Mazzali, P., Pian, E., Pickering, T., Buckley, D., Crawford, S., Gulbis, A. A. M., Hettlage, C., Hooper, E., Nordsieck, K., O'Donoghue, D., Husser, T. -O., Potter, S., Kniazev, A., Kotze, P., Romero-Colmenero, E., Vaisanen, P., Wolf, M., Bietenholz, M., Bartel, N., Fransson, C., Walker, E. S., Brunthaler, A., Chakraborti, S., Levesque, E. M., MacFadyen, A., Drescher, C., Bock, G., Marples, P., Anderson, J. P., Benetti, S., Reichart, D., Ivarsen, K.
We present X-ray, UV/optical, and radio observations of the stripped-envelope, core-collapse supernova (SN) 2011ei, one of the least luminous SNe IIb or Ib observed to date. Our observations begin with a discovery within 1 day of explosion and span s
Externí odkaz:
http://arxiv.org/abs/1207.2152
Autor:
Gvaramadze, V. V., Kniazev, A. Y., Miroshnichenko, A. S., Berdnikov, L. N., Langer, N., Stringfellow, G. S., Todt, H., Hamann, W. -R., Grebel, E. K., Buckley, D., Crause, L., Crawford, S., Gulbis, A., Hettlage, C., Hooper, E., Husser, T. -O., Kotze, P., Loaring, N., Nordsieck, K. H., O'Donoghue, D., Pickering, T., Potter, S., Colmenero, E. Romero, Vaisanen, P., Williams, T., Wolf, M., Reichart, D. E., Ivarsen, K. M., Haislip, J. B., Nysewander, M. C., LaCluyze, A. P.
We report the discovery of two new Galactic candidate luminous blue variable (cLBV) stars via detection of circular shells (typical of known confirmed and cLBVs) and follow-up spectroscopy of their central stars. The shells were detected at 22 um in
Externí odkaz:
http://arxiv.org/abs/1201.2854
There is increasing evidence of a connection between AGN activity and galaxy evolution. To obtain further insight into this potentially important evolutionary phase, we analyse the properties of quasar host galaxies. In this paper, we present a popul
Externí odkaz:
http://arxiv.org/abs/1006.2136
Autor:
Kuraszkiewicz, J., Wilkes, B. J., Hooper, E. J., Wood, K., Bjorkman, J., Delain, K., Whitney, B., Hughes, D. H., McLeod, K. K., Elvis, M., Impey, C., Lonsdale, C., Malkan, M., McDowell, J. C.
Publikováno v:
Astrophys.J.590:128-148,2003
[Abridged] We present ISO far-infrared (IR) observations of 21 hard X-ray selected AGN from the HEAO-1 A2 sample. We compare the far-IR to X-ray spectral energy distributions (SEDs) of this sample with various radio and optically selected AGN samples
Externí odkaz:
http://arxiv.org/abs/astro-ph/0302572
We present Hubble Space Telescope (HST) Wide Field Planetary Camera 2 (WFPC2) data on the large-scale environments of 16 0.39 < z < 0.51 quasars from the Large Bright Quasar Survey (LBQS). The LBQS quasars are representative of the radio-quiet popula
Externí odkaz:
http://arxiv.org/abs/astro-ph/0104124
Autor:
Wilkes, B. J., Green, P., Brissenden, R., Cameron, R., Dobrzycki, A., Drake, J., Evans, N., Fruscione, A., Gaetz, T., Garcia, M., Ghosh, H., Grimes, J., Grindlay, J., Hooper, E., Karovska, M., Kashyap, V., Kim, D. -W., Kowal, K., Marshall, H., Mossman, A., Morris, D., Nichols, J., Szentgyorgyi, A., Tananbaum, H., van Speybroeck, L., Vikhlinin, A., Virani, S., Zhao, P., Baldwin, J., Kindt, A., Chaffee, F., Dey, A., Jannuzi, B., Foltz, C., Mathur, S., McNamara, B., Newberg, H.
The launch of the Chandra X-ray Observatory in July 1999 opened a new era in X-ray astronomy. Its unprecedented, <0.5" spatial resolution and low background are providing views of the X-ray sky 10-100 times fainter than previously possible. We have i
Externí odkaz:
http://arxiv.org/abs/astro-ph/0011377
Autor:
Cappi, M., Mazzotta, P., Elvis, M., Burke, D. J., Comastri, A., Fiore, F., Forman, W., Fruscione, A., Green, P., Harris, D., Hooper, E. J., Jones, C., Kaastra, J. S., Kellogg, E., Murray, S., McNamara, B., Nicastro, F., Ponman, T. J., Schlegel, E. M., Siemiginowska, A., Tananbaum, H., Vikhlinin, A., Virani, S., Wilkes, B.
We present results from a Chandra X-ray Observatory study of the field X-ray source populations in 4 different observations: two high-redshift (z~0.5) clusters of galaxies 3C295 and RXJ003033.2+261819; and two non-cluster fields with similar exposure
Externí odkaz:
http://arxiv.org/abs/astro-ph/0009199
Continuum observations at radio, millimetre, infrared and soft X-ray energies are presented for a sample of 22 quasars, consisting of flat and steep spectrum radio loud, radio intermediate and radio quiet objects. The primary observational distinctio
Externí odkaz:
http://arxiv.org/abs/astro-ph/0006315