Creation of cosmic structure in the complex galaxy cluster merger Abell 2744

By Julian Merten, D. Coe, R. Dupke, Richard J. Massey, A. Zitrin, E. Cypriano, N. Okabe, B. Frye, F. Braglia, Y. Jiménez-Teja and 8 more. 2011

214 citations recorded by the source corpus.

We present a detailed strong lensing, weak lensing and X-ray analysis of Abell 2744 (z = 0:308), one of the most actively merging galaxy clusters known. It appears to have unleashed ‘dark’, ‘ghost’, ‘bullet’ and ‘stripped’ substructures, each 10 14 M . The phenomenology is complex and will present a challenge for numerical simulations to reproduce. With new, multiband HST imaging, we identify 34 strongly-lensed images of 11 galaxies around the massive Southern ‘core’. Combining this with weak lensing data from HST, VLT and Subaru, we produce the most detailed mass map of this cluster to date. We also perform an independent analysis of archival Chandra X-ray imaging. Our analyses support a recent claim that the Southern core and Northwestern substructure are post-merger and exhibit morphology similar to the Bullet Cluster viewed from an angle. From the separation between X-ray emitting gas and lensing mass in the Southern core, we derive a new and independent constraint on the self-interaction cross section of dark matter particles =m

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/ae0189a55aa87186e721d6e5383261b903251eb3

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In Astronomy and Astrophysics

1. Richard S. Ellis
2. R. Bouwens
3. P. Hopkins
4. L. Hernquist
5. G. Illingworth
6. M. Franx
7. P. Oesch
8. P. V. van Dokkum

In Instrumentation

1. Richard S. Ellis
2. R. Bouwens
3. G. Illingworth
4. M. Franx
5. P. Oesch
6. I. Labbé
7. P. V. van Dokkum
8. Brant Robertson

Citations in the corpus

• Mass and magnification maps for the Hubble Space Telescope Frontier Fields clusters: implications for high-redshift studies (2014, background): “An earlier strong-lensing analysis of this cluster was previously published by Merten et al. (2011), who identified 11 systems and 1 http://www.stsci.edu/hst/campaigns/frontier-fields/ MNRAS 444, 268–289 (2014) at U niversity of D urham on N ovem ber 5, 2015 http://m nras.oxfordjournals.org/ D ow…”
• Masses of Galaxy Clusters from Gravitational Lensing (2013, background): “As an explanation of the formation of the “ghost”,“dark”, and “stripped” clumps, Merten et al. (2011) suggest a complicated merger scenario.”
• The Frontier Fields: Survey Design and Initial Results (2016, methodology): “It has been extensively studied by the Chandra X-ray Observatory (e.g. Kempner & David 2004; Owers et al. 2011; Merten et al. 2011).”
• The behaviour of dark matter associated with four bright cluster galaxies in the 10 kpc core of Abell 3827 (2015, background): “…most visibly in collisions like the ‘Bullet Cluster’ 1E0657-56 (Clowe, Gonzalez & Markevitch 2004; Bradač et al. 2006; Clowe et al. 2006), Abell 520 (Mahdavi et al. 2007; Clowe et al. 2012; Jee et al. 2014), MACSJ0025-12 (Bradač et al. 2008), Abell 2744 (Merten et al. 2011) and DLSCL J0916.”
• CLASH: THE ENHANCED LENSING EFFICIENCY OF THE HIGHLY ELONGATED MERGING CLUSTER MACS J0416.1−2403 (2012, background): “Mann & Ebeling (2012) classified it as merging based on the double-peaked X-ray structure, where the southern peak is offset by a few arcseconds from the corresponding (second) BCG, as expected in mergers (e.g. Bradač et al. 2006; Merten et al. 2011).”
• HUBBLE SPACE TELESCOPE COMBINED STRONG AND WEAK LENSING ANALYSIS OF THE CLASH SAMPLE: MASS AND MAGNIFICATION MODELS AND SYSTEMATIC UNCERTAINTIES (2014, background): “Various studies have previously combined SL+WL (e.g., Bradač et al. 2006; Limousin et al. 2007; Merten et al. 2009, 2011; Umetsu et al. 2011a, 2011b, 2012; Oguri et al. 2012; Newman et al. 2013a, 2013b).”
• The extreme faint end of the UV luminosity function at z ∼ 6 through gravitational telescopes: a comprehensive assessment of strong lensing uncertainties (2018, background): “…which includes mass models submitted by several teams: the GLAFIC team (Oguri et al. 2010; Ishigaki et al. 2015), Bradac et al. (Bradač et al. 2005; Hoag et al. 2016), Merten & Zitrin (Merten et al. 2011; Zitrin et al. 2009, 2013), Sharon & Johnson (Johnson et al. 2014), and Diego et al. (2015).”
• Dust in the Reionization Era: ALMA Observations of a z = 8.38 Gravitationally Lensed Galaxy (2017, methodology): “Moreover a web tool11 enables us to estimate the magnification for Abell2744 YD4 from parametric high resolution models, i.e. version 3.1 of the CATS model (Richard et al. 2014), version 3 of Johnson et al. (2014), version 3 of Merten et al. (2011) and version 3 of GLAFIC (Ishigaki et al. 2015).”
• THE ATACAMA COSMOLOGY TELESCOPE: ACT-CL J0102−4915 “EL GORDO,” A MASSIVE MERGING CLUSTER AT REDSHIFT 0.87 (2011, methodology): “…(the original “bullet” cluster at z = 0.296, Markevitch et al. 2002), Abell 2146 (at z = 0.234, Russell et al. 2010), and possibly Abell 2744 (at z = 0.308, Merten et al. 2011), contain in addition † Based on observations made with ESO Telescopes at the Paranal Observatory under programme ID 086.”
• LENS MODELS AND MAGNIFICATION MAPS OF THE SIX HUBBLE FRONTIER FIELDS CLUSTERS (2014, methodology): “…are rich in lensing constraints in the form of multiply lensed galaxies, and have been previously studied (Zitrin et al. 2013; Zheng et al. 2012; Limousin et al. 2012; Merten et al. 2011; Zitrin et al. 2011; Richard et al. 2010; Smith et al. 2009; Zitrin et al. 2009a; Zitrin & Broadhurst 2009).”
• ARE ULTRA-FAINT GALAXIES AT z = 6–8 RESPONSIBLE FOR COSMIC REIONIZATION? COMBINED CONSTRAINTS FROM THE HUBBLE FRONTIER FIELDS CLUSTERS AND PARALLELS (2015, methodology): “Among the different lensing models available in the HFF project, only Merten et al. (2011) provide a wide-field magnification map for the three clusters that covers their flanked fields.”
• The Dearth of z ∼ 10 Galaxies in All HST Legacy Fields—The Rapid Evolution of the Galaxy Population in the First 500 Myr (2017, methodology): “A small amount of magnification is also present in the parallel fields, which is estimated in the models of Merten et al. (2011) using weak lensing.”
• Combined strong and weak lensing analysis of 28 clusters from the Sloan Giant Arcs Survey (2011, background): “…lensing analysis of several merging clusters of galaxies strongly supports the collisionless nature of dark matter (Clowe et al. 2006; Jee et al. 2007; Bradač et al. 2008; Merten et al. 2011), although a possible case against the collisionless nature has also been discovered (Mahdavi et al. 2007).”
• Wide-Field InfrarRed Survey Telescope-Astrophysics Focused Telescope Assets WFIRST-AFTA 2015 Report (2015, background): “Recently, more complicated merging systems have been identified (e.g. Merten et al. 2011, Clowe et al. 2012, Dawson et al. 2012) offering a great opportunity to better characterize the nature of cosmic dark matter.”
• What does the Bullet Cluster tell us about Self-Interacting Dark Matter? (2016, unknown): “4−1222 (Bradač et al. 2008), σ/m < 3 cm2 g−1 from Abell 2744 (Merten et al. 2011), and σ/m < 7 cm2 g−1 from DLSCL J0916.”