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Black Hole

Lensing of space time around a black hole. At Oxford 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.

Prof. Matt Jarvis

Professor of Astrophysics

Research theme

  • Astronomy and astrophysics

Sub department

  • Astrophysics

Research groups

  • Cosmology
  • Galaxy formation and evolution
  • Hintze Centre for Astrophysical Surveys
  • MeerKAT
  • Rubin-LSST
  • The Square Kilometre Array (SKA)
Matt.Jarvis@physics.ox.ac.uk
Telephone: 01865 (2)83654
Denys Wilkinson Building, room 703
  • About
  • Publications

Combining dark energy survey science verification data with near-infrared data from the ESO VISTA hemisphere survey

Monthly Notices of the Royal Astronomical Society Oxford University Press 446:3 (2014) 2523-2539

Authors:

M Banerji, S Jouvel, H Lin, RG McMahon, O Lahav, FJ Castander, FB Abdalla, E Bertin, A Carnero, MC Kind, LN Da Costa, D Gerdes, J Gschwend, M Lima, A Merson, C Miller, R Ogando, P Pellegrini, S Reed, R Saglia, C Sanchez, S Allam, J Annis, G Bernstein, J Bernstein, R Bernstein, D Capozzi, M Childress, CE Cunha, TM Davis, DL Depoy, S Desai, HT Diehl, P Doel, J Findlay, DA Finley, B Flaugher, J Frieman, E Gaztanaga, K Glazebrook, C Gonzalez-Fernandez, E Gonzalez-Solares, K Honscheid, MJ Irwin, Matthew Jarvis, A Kim, S Koposov, K Kuehn

Abstract:

We present the combination of optical data from the Science Verification phase of the Dark Energy Survey (DES) with near-infrared (NIR) data from the European Southern Observatory VISTA Hemisphere Survey (VHS). The deep optical detections from DES are used to extract fluxes and associated errors from the shallower VHS data. Joint seven-band (grizYJK) photometric catalogues are produced in a single 3 sq-deg dedicated camera field centred at 02h26m−04d36m where the availability of ancillary multiwavelength photometry and spectroscopy allows us to test the data quality. Dual photometry increases the number of DES galaxies with measured VHS fluxes by a factor of ∼4.5 relative to a simple catalogue level matching and results in a ∼1.5 mag increase in the 80 per cent completeness limit of the NIR data. Almost 70 per cent of DES sources have useful NIR flux measurements in this initial catalogue. Photometric redshifts are estimated for a subset of galaxies with spectroscopic redshifts and initial results, although currently limited by small number statistics, indicate that the VHS data can help reduce the photometric redshift scatter at both z < 0.5 and z > 1. We present example DES+VHS colour selection criteria for high-redshift luminous red galaxies (LRGs) at z ∼ 0.7 as well as luminous quasars. Using spectroscopic observations in this field we show that the additional VHS fluxes enable a cleaner selection of both populations with <10 per cent contamination from galactic stars in the case of spectroscopically confirmed quasars and <0.5 per cent contamination from galactic stars in the case of spectroscopically confirmed LRGs. The combined DES+VHS data set, which will eventually cover almost 5000 sq-deg, will therefore enable a range of new science and be ideally suited for target selection for future wide-field spectroscopic surveys.
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Why z > 1 radio-loud galaxies are commonly located in protoclusters

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 445:1 (2014) 280-289

Authors:

NA Hatch, D Wylezalek, JD Kurk, D Stern, C De Breuck, MJ Jarvis, A Galametz, AH Gonzalez, WG Hartley, A Mortlock, N Seymour, JA Stevens
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DISCOVERY OF CARBON RADIO RECOMBINATION LINES IN M82

The Astrophysical Journal Letters American Astronomical Society 795:2 (2014) l33

Authors:

Leah K Morabito, JBR Oonk, Francisco Salgado, M Carmen Toribio, HJA Röttgering, AGGM Tielens, Rainer Beck, Björn Adebahr, Philip Best, Robert Beswick, Annalisa Bonafede, Gianfranco Brunetti, Marcus Brüggen, Krzysztof T Chyży, JE Conway, Wim van Driel, Jonathan Gregson, Marijke Haverkorn, George Heald, Cathy Horellou, Andreas Horneffer, Marco Iacobelli, Matt J Jarvis, Ivan Marti-Vidal, George Miley, DD Mulcahy, Emanuela Orrú, Roberto Pizzo, AMM Scaife, Eskil Varenius, Reinout J van Weeren, Glenn J White, Michael W Wise
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LOFAR LOW-BAND ANTENNA OBSERVATIONS OF THE 3C 295 AND BOÖTES FIELDS: SOURCE COUNTS AND ULTRA-STEEP SPECTRUM SOURCES

The Astrophysical Journal American Astronomical Society 793:2 (2014) 82

Authors:

RJ van Weeren, WL Williams, C Tasse, HJA Röttgering, DA Rafferty, S van der Tol, G Heald, GJ White, A Shulevski, P Best, HT Intema, S Bhatnagar, W Reich, M Steinmetz, S van Velzen, TA Enßlin, I Prandoni, F de Gasperin, M Jamrozy, G Brunetti, MJ Jarvis, JP McKean, MW Wise, C Ferrari, J Harwood, JBR Oonk, M Hoeft, M Kunert-Bajraszewska, C Horellou, O Wucknitz, A Bonafede, NR Mohan, AMM Scaife, H-R Klöckner, IM van Bemmel, A Merloni, KT Chyzy, D Engels, H Falcke, M Pandey-Pommier, A Alexov, J Anderson, IM Avruch, R Beck, ME Bell, MJ Bentum, G Bernardi, F Breitling, J Broderick, WN Brouw, M Brüggen, HR Butcher, B Ciardi, E de Geus, M de Vos, A Deller, S Duscha, J Eislöffel, RA Fallows, W Frieswijk, MA Garrett, J Grießmeier, AW Gunst, JP Hamaker, TE Hassall, J Hörandel, A van der Horst, M Iacobelli, NJ Jackson, E Juette, VI Kondratiev, M Kuniyoshi, P Maat, G Mann, D McKay-Bukowski, M Mevius, R Morganti, H Munk, AR Offringa, E Orrù, H Paas, VN Pandey, G Pietka, R Pizzo, AG Polatidis, A Renting, A Rowlinson, D Schwarz, M Serylak, J Sluman, O Smirnov, BW Stappers, A Stewart, J Swinbank, M Tagger, Y Tang, S Thoudam, C Toribio, R Vermeulen, C Vocks, P Zarka
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Spectroscopy of z ∼ 7 candidate galaxies: using Lyman α to constrain the neutral fraction of hydrogen in the high-redshift universe

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 443:4 (2014) 2831-2842

Authors:

Joseph Caruana, Andrew J Bunker, Stephen M Wilkins, Elizabeth R Stanway, Silvio Lorenzoni, Matt J Jarvis, Holly Ebert
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