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91探花
Black Hole

Lensing of space time around a black hole. At 91探花 we study black holes observationally and theoretically on all size and time scales - it is some of our core work.

Credit: ALAIN RIAZUELO, IAP/UPMC/CNRS. CLICK HERE TO VIEW MORE IMAGES.

Joseph Silk

Emeritus Savilian Professor

Sub department

  • Astrophysics

Research groups

  • Beecroft Institute for Particle Astrophysics and Cosmology
joseph.silk@physics.ox.ac.uk
Telephone: 01865 (2)73300
Denys Wilkinson Building, room 532G
  • About
  • Publications

Supernova remnants, planetary nebulae and the distance to NGC 4214

Astrophysics and Space Science 330:1 (2010) 123-131

Authors:

MA Dopita, D Calzetti, J Ma铆z聽Apell谩niz, WP Blair, KS Long, M Mutchler, BC Whitmore, HE Bond, J MacKenty, B Balick, M Carollo, M Disney, JA Frogel, R O'Connell, D Hall, JA Holtzman, RA Kimble, P McCarthy, F Paresce, A Saha, AR Walker, J Silk, M Sirianni, J Trauger, R Windhorst, E Young

Abstract:

We present narrow band, continuum subtracted H伪, [S II], H尾, [O III] and [O II] data taken with the Wide Field Camera 3 on the Hubble Space Telescope in the nearby dwarf starburst galaxy NGC 4214. From these images, we identify seventeen new planetary nebula candidates, and seven supernova remnant candidates. We use the observed emission line luminosity function of the planetary nebulae to establish a new velocity-independent distance to NGC 4214. We conclude that the PNLF technique gives a reddening independent distance to NGC 4214 of 3.19卤0.36 Mpc, and that our current best-estimate of the distance to this galaxy ids 2.98卤0.13 Mpc. 漏 2010 Springer Science+Business Media B.V.

Planck pre-launch status: The Planck mission

ASTRONOMY & ASTROPHYSICS 520 (2010) ARTN A1

Authors:

JA Tauber, N Mandolesi, J-L Puget, T Banos, M Bersanelli, FR Bouchet, RC Butler, J Charra, G Crone, J Dodsworth, G Efstathiou, R Gispert, G Guyot, A Gregorio, JJ Juillet, J-M Lamarre, RJ Laureijs, CR Lawrence, HU Norgaard-Nielsen, T Passvogel, JM Reix, D Texier, L Vibert, A Zacchei, PAR Ade, N Aghanim, B Aja, E Alippi, L Aloy, P Armand, M Arnaud, A Arondel, A Arreola-Villanueva, E Artal, E Artina, A Arts, M Ashdown, J Aumont, M Azzaro, A Bacchetta, C Baccigalupi, M Baker, M Balasini, A Balbi, AJ Banday, G Barbier, RB Barreiro, M Bartelmann, P Battaglia, E Battaner, K Benabed, J-L Beney, R Beneyton, K Bennett, A Benoit, J-P Bernard, P Bhandari, R Bhatia, M Biggi, R Biggins, G Billig, Y Blanc, H Blavot, JJ Bock, A Bonaldi, R Bond, J Bonis, J Borders, J Borrill, L Boschini, F Boulanger, J Bouvier, M Bouzit, R Bowman, E Breelle, T Bradshaw, M Braghin, M Bremer, D Brienza, D Broszkiewicz, C Burigana, M Burkhalter, P Cabella, T Cafferty, M Cairola, S Caminade, P Camus, CM Cantalupo, B Cappellini, J-F Cardoso, R Carr, A Catalano, L Cayon, M Cesa, M Chaigneau, A Challinor, A Chamballu, JP Chambelland, M Charra, L-Y Chiang, G Chlewicki, PR Christensen, S Church, E Ciancietta, M Cibrario, R Cizeron, D Clements, B Collaudin, J-M Colley, S Colombi, A Colombo, F Colombo, O Corre, F Couchot, B Cougrand, A Coulais, P Couzin, B Crane, B Crill, M Crook, D Crumb, F Cuttaia, U Doerl, P da Silva, R Daddato, C Damasio, L Danese, G d'Aquino, O D'Arcangelo, K Dassas, RD Davies, W Davies, RJ Davis, P De Bernardis, D de Chambure, G de Gasperis, ML De la Fuente, P De Paco, A De Rosa, G De Troia, G De Zotti, M Dehamme, J Delabrouille, J-M Delouis, F-X Desert, G di Girolamo, C Dickinson, E Doelling, K Dolag, I Domken, M Douspis, D Doyle, S Du, D Dubruel, C Dufour, C Dumesnil, X Dupac, P Duret, C Eder, A Elfving, TA Ensslin, P Eng, K English, HK Eriksen, P Estaria, MC Falvella, F Ferrari, F Finelli, A Fishman, S Fogliani, S Foley, A Fonseca, G Forma, O Forni, P Fosalba, J-J Fourmond, M Frailis, C Franceschet, E Franceschi, S Francois, M Frerking, MF Gomez-Renasco, KM Gorski, TC Gaier, S Galeotta, K Ganga, J Garcia Lazaro, A Garnica, M Gaspard, E Gavila, M Giard, G Giardino, G Gienger, Y Giraud-Heraud, J-M Glorian, M Griffin, A Gruppuso, L Guglielmi, D Guichon, B Guillaume, P Guillouet, J Haissinski, FK Hansen, J Hardy, D Harrison, A Hazell, M Hechler, V Heckenauer, D Heinzer, R Hell, S Henrot-Versille, C Hernandez-Monteagudo, D Herranz, JM Herreros, V Hervier, A Heske, A Heurtel, SR Hildebrandt, R Hills, E Hivon, M Hobson, D Hollert, W Holmes, A Hornstrup, W Hovest, RJ Hoyland, G Huey, KM Huffenberger, N Hughes, U Israelsson, B Jackson, A Jaffe, TR Jaffe, T Jagemann, NC Jessen, J Jewell, W Jones, M Juvela, J Kaplan, P Karlman, F Keck, E Keihanen, M King, TS Kisner, P Kletzkine, R Kneissl, J Knoche, L Knox, T Koch, M Krassenburg, H Kurki-Suonio, A Lahteenmaki, G Lagache, E Lagorio, P Lami, J Lande, A Lange, F Langlet, R Lapini, M Lapolla, A Lasenby, M Le Jeune, JP Leahy, M Lefebvre, F Legrand, G Le Meur, R Leonardi, B Leriche, C Leroy, P Leutenegger, SM Levin, PB Lilje, C Lindensmith, M Linden-Vornle, A Loc, Y Longval, PM Lubin, T Luchik, I Luthold, JF Macias-Perez, T Maciaszek, C MacTavish, S Madden, B Maffei, C Magneville, D Maino, A Mambretti, B Mansoux, D Marchioro, M Maris, F Marliani, J-C Marrucho, J Marti-Canales, E Martinez-Gonzalez, A Martin-Polegre, P Martin, C Marty, W Marty, S Masi, M Massardi, S Matarrese, F Matthai, P Mazzotta, A McDonald, P McGrath, A Mediavilla, R Meinhold, J-B Melin, F Melot, L Mendes, A Mennella, C Mervier, L Meslier, M Miccolis, M-A Miville-Deschenes, A Moneti, D Montet, L Montier, J Mora, G Morgante, G Morigi, G Morinaud, N Morisset, D Mortlock, S Mottet, J Mulder, D Munshi, A Murphy, P Murphy, P Musi, J Narbonne, P Naselsky, A Nash, F Nati, P Natoli, B Netterfield, J Newell, M Nexon, C Nicolas, PH Nielsen, N Ninane, F Noviello, D Novikov, I Novikov, IJ O'Dwyer, P Oldeman, P Olivier, L Ouchet, CA Oxborrow, L Perez-Cuevas, L Pagan, C Paine, F Pajot, R Paladini, F Pancher, J Panh, G Parks, P Parnaudeau, B Partridge, B Parvin, JP Pascual, F Pasian, DP Pearson, T Pearson, M Pecora, O Perdereau, L Perotto, F Perrotta, F Piacentini, M Piat, E Pierpaoli, O Piersanti, E Plaige, S Plaszczynski, P Platania, E Pointecouteau, G Polenta, N Ponthieu, L Popa, G Poulleau, T Poutanen, G Prezeau, L Pradell, M Prina, S Prunet, JP Rachen, D Rambaud, F Rame, I Rasmussen, J Rautakoski, WT Reach, R Rebolo, M Reinecke, J Reiter, C Renault, S Ricciardi, P Rideau, T Riller, I Ristorcelli, JB Riti, G Rocha, Y Roche, R Pons, R Rohlfs, D Romero, S Roose, C Rosset, S Rouberol, M Rowan-Robinson, JA Rubino-Martin, P Rusconi, B Rusholme, M Salama, E Salerno, M Sandri, D Santos, JL Sanz, L Sauter, F Sauvage, G Savini, M Schmelzel, A Schnorhk, W Schwarz, D Scott, MD Seiffert, P Shellard, C Shih, M Sias, JI Silk, R Silvestri, R Sippel, GF Smoot, J-L Starck, P Stassi, J Sternberg, F Stivoli, V Stolyarov, R Stompor, L Stringhetti, D Strommen, T Stute, R Sudiwala, R Sugimura, R Sunyaev, J-F Sygnet, M Tuerler, E Taddei, J Tallon, C Tamiatto, M Taurigna, D Taylor, L Terenzi, S Thuerey, J Tillis, G Tofani, L Toffolatti, E Tommasi, M Tomasi, E Tonazzini, J-P Torre, S Tosti, F Touze, M Tristram, J Tuovinen, M Tuttlebee, G Umana, L Valenziano, D Vallee, M van der Vlis, F Van Leeuwen, J-C Vanel, B Van-Tent, J Varis, E Vassallo, C Vescovi, F Vezzu, D Vibert, P Vielva, J Vierra, F Villa, N Vittorio, C Vuerli, LA Wade, AR Walker, BD Wandelt, C Watson, D Werner, M White, SDM White, A Wilkinson, P Wilson, A Woodcraft, B Yoffo, M Yun, V Yurchenko, D Yvon, B Zhang, O Zimmermann, A Zonca, D Zorita

A STUDY OF HIGH-ORDER NON-GAUSSIANITY WITH APPLICATIONS TO MASSIVE CLUSTERS AND LARGE VOIDS

ASTROPHYSICAL JOURNAL 724:1 (2010) 285-295

Authors:

Sirichai Chongchitnan, Joseph Silk

A redshift survey towards the cosmic microwave background cold spot

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 404:1 (2010) L69-L73

Authors:

MN Bremer, J Silk, LJM Davies, MD Lehnert

Active galactic nuclei activity: self-regulation from backflow

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 405:2 (2010) 1303-1314

Authors:

V Antonuccio-Delogu, Joseph Silk

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