The Square Kilometre Array (SKA)

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LOFAR 144-MHz follow-up observations of GW170817

(2020)

Authors:

JW Broderick, TW Shimwell, K Gourdji, A Rowlinson, S Nissanke, K Hotokezaka, PG Jonker, C Tasse, MJ Hardcastle, JBR Oonk, RP Fender, RAMJ Wijers, A Shulevski, AJ Stewart, S ter Veen, VA Moss, MHD van der Wiel, DA Nichols, A Piette, ME Bell, D Carbone, S Corbel, J Eislöffel, J-M Grießmeier, EF Keane, CJ Law, T Muñoz-Darias, M Pietka, M Serylak, AJ van der Horst, J van Leeuwen, R Wijnands, P Zarka, JM Anderson, MJ Bentum, R Blaauw, WN Brouw, M Brüggen, B Ciardi, M de Vos, S Duscha, RA Fallows, TMO Franzen, MA Garrett, AW Gunst, M Hoeft, JR Hörandel, M Iacobelli, E Jütte, LVE Koopmans, A Krankowski, P Maat, G Mann, H Mulder, A Nelles, H Paas, M Pandey-Pommier, R Pekal, W Reich, HJA Röttgering, DJ Schwarz, O Smirnov, M Soida, MC Toribio, MP van Haarlem, RJ van Weeren, C Vocks, O Wucknitz, P Zucca
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Radio Afterglows of Very High Energy Gamma-Ray Bursts 190829A and 180720B

(2020)

Authors:

L Rhodes, AJ van der Horst, R Fender, I Monageng, GE Anderson, J Antoniadis, MF Bietenholz, M Bottcher, JS Bright, C Kouveliotou, M Kramer, SE Motta, DRA Williams, PA Woudt, .
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A radio parallax to the black hole X-ray binary MAXI J1820+070

Monthly Notices of the Royal Astronomical Society: Letters Oxford University Press (OUP) 493:1 (2020) l81-l86

Authors:

P Atri, JCA Miller-Jones, A Bahramian, RM Plotkin, AT Deller, PG Jonker, TJ Maccarone, GR Sivakoff, R Soria, D Altamirano, T Belloni, R Fender, E Koerding, D Maitra, S Markoff, S Migliari, D Russell, T Russell, CL Sarazin, AJ Tetarenko, V Tudose
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Multiwavelength consensus of large-scale linear bias

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 493:1 (2020) 747-764

Authors:

Hengxing Pan, Danail Obreschkow, Cullan Howlett, Claudia del P Lagos, Pascal J Elahi, Carlton Baugh, Violeta Gonzalez-Perez
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The rest-frame UV luminosity function at z≃4 : a significant contribution of AGN to the bright-end of the galaxy population

Monthly Notices of the Royal Astronomical Society Oxford University Press 494:2 (2020) 1771-1783

Authors:

Nathan Adams, Rebecca Bowler, Matthew Jarvis, Boris Haussler, Ross McLure, Andrew Bunker, James Dunlop, Aprajita Verma

Abstract:

We measure the rest-frame UV luminosity function (LF) at z ∼ 4 self-consistently over a wide range in absolute magnitude (−27 . MUV . −20). The LF is measured with 46,904 sources selected using a photometric redshift approach over ∼ 6 deg2 of the combined COSMOS and XMM-LSS fields. We simultaneously fit for both AGN and galaxy LFs using a combination of Schechter or Double Power Law (DPL) functions alongside a single power law for the faint-end slope of the AGN LF. We find a lack of evolution in the shape of the bright-end of the LBG component when compared to other studies at z ' 5 and evolutionary recipes for the UV LF. Regardless of whether the LBG LF is fit with a Schechter function or DPL, AGN are found to dominate at MUV < −23.5. We measure a steep faint-end slope of the AGN LF with αAGN = −2.09+0.35 −0.38 (−1.66+0.29 −0.58) when fit alongside a Schechter function (DPL) for the galaxies. Our results suggest that if AGN are morphologically selected it results in a bias to lower number densities. Only by considering the full galaxy population over the transition region from AGN to LBG domination can an accurate measurement of the total LF be attained.
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