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Author First Name	Author Last Name	Email Address	Institution	Title	Abstract	Presentation	Discussion	Splinters	Session
Amy	Barger	barger@astro.wisc.edu	University of Wisconsin-Madison	Extragalactic Surveys	I will review our current understanding of the history of supermassive black hole accretion from deep and wide-area X-ray surveys. I will use these data to compute the growth of the supermassive black hole mass density and compare it with the locally determined values.	review	For debate: which do we need more, additional large area surveys or pushing as deep as possible?	Monday: Type I and II AGN, Absorption, XBONGs, Tuesday: AGN correlation functions, LSS, environments	1
Volker	Beckmann	beckmann@milkyway.gsfc.nasa.gov	NASA / Goddard Space Flight Center	The INTEGRAL 20-40 keV AGN Survey and Luminosity Function	We have compiled a complete extragalactic sample based on ~25,000 deg^2 to a limiting flux of 3E-11 ergs cm-2 s-1 (~7,000 deg^2 to a flux limit of E-11 ergs cm-2 s-1) in the 20 -- 40 keV band with INTEGRAL. The flux-number relation is best described by a power-law with a slope of \alpha = 1.66 +/- 0.11. We present the first AGN luminosity function above 20 keV. The results are consistent with those derived in the 2 - 20 keV energy band and do not show a significant contribution by Compton-thick objects.	oral	- does INTEGRAL miss the highly absorbed (Compton-thick) AGN so far? - does evolution of absorption with redshift solve the problem? - is dependency of absorption with redshift seen in the Chandra surveys? - deeper surveys using INTEGRAL/IBIS and Swift/BAT are needed and currently on-going, but those surveys will only shed light on the low redshift (z<0.1) universe	Monday: X-ray luminosity functions and evolution, Tuesday: AGN correlation functions, LSS, environments	0
Niel	Brandt	niel@astro.psu.edu	The Pennsylvania State University	Deep-Survey Constraints on X-ray Outbursts from Stellar Tidal Disruptions	Transient X-ray outbursts from galactic nuclei are likely caused by inevitable fueling events of supermassive black holes when a star or gas cloud is tidally disrupted and partially accreted. They may be a primary fueling mechanism for moderate-luminosity active galaxies. We present new constraints on the rate of such outbursts, utilizing the multi-epoch nature of the Chandra Deep Fields. Specifically, we constrain outbursts with harder X-ray spectra, higher redshifts, and lower X-ray luminosities than in our past work. We also discuss future plans and implications for the Black Hole Finder Probe, Lobster, eROSITA, LSST, and JDEM.	oral		Monday: Type I and II AGN, Absorption, XBONGs, Tuesday: AGN correlation functions, LSS, environments	7
Marcella	Brusa	marcella@mpe.mpg.de	MPE - Max Planck Institut fuer Extraterrestrische Physik	The AGN content of the COSMOS: the XMM-Newton view	The XMM-Newton wide-field survey in the COSMOS field (XMM-COSMOS) is expected to be an important step forward in the study of the physics and evolution of AGN, especially for what concern high redshift obscured quasars. I will discuss the survey strategy and the main scientific objectives expected from the full exploitation of the truly multiwavelength dataset available (including HST, NIR, Spitzer and VLA data). I will also present the most important results obtained from the analysis of the first year XMM-Newton observations. In particular, I will concentrate on the multiwavelength properties of about 1400 X-ray sources detected over an area of ~2 deg^2, and I will show a few examples on how the combined use of different datasets is crucial to fully characterize the AGN source population.	oral	Most important questions left to answer: - luminosity function of z>3 quasars: current samples, uncertainties in the extrapolation from lower redshift, how to increase the statistics, selection effects, problem with optical identification - role of AGN in galaxy evolution: how can observations help? statistics of AGN in high-z otherwise "normal" galaxies (EROs, BzKs, LBG etc.): need quantitative estimates	Monday: X-ray luminosity functions and evolution, Tuesday: AGN correlation functions, LSS, environments	7
Francisco J.	Carrera	carreraf@ifca.unican.es	Instituto de Fisica de Cantabria (CSIC-UC), Spain	Obscured and unobscured growth of supermassive black holes from the XMM-Newton Medium sensitivity Survey	We report on the current status of the XMM-Newton Medium sensitivity Survey, where we have identified the sources responsible for 50% of the accretion history in the Universe. This sample outnumbers previous medium X-ray surveys. We will discuss source counts, angular clustering, identifications, and X-ray spectral properties. Unobscured objects still dominate at these fluxes, but obscured sources become increasingly important at fainter fluxes. The X-ray-to-Optical flux ratio appears to be a good (but not perfect) discriminant between obscured and unobscured objects. Preliminary results confirm the presence of Fe-K emission in the stacked X-ray spectra of obscured and unobscured AGN.	oral	Questions: - Relation between AGN and galaxy formation - Fraction of obscured/Compton thick AGN - Cosmological evolution of obscured/unobscured AGN Further surveys: - All sky in 2-10 keV Science/methods: - Statistical identifications Debated: - All of the above	Monday: Type I and II AGN, Absorption, XBONGs, Tuesday: AGN correlation functions, LSS, environments	2
Francesca	Civano	francesca.civano@bo.astro.it	INAF--OAB & Bologna University	Multiwavelength properties of elusive AGNs: X-EROs and XBONGs	Extensive programs of follow--up observations of sources detected in both deep and shallow X--ray survey (Chandra Deep Fields, HELLAS2XMM and COSMOS) have revealed a complex nature for the hard X--ray source population. The large database of these surveys offers a unique possibility to select statistically relevant samples of AGN characterized by extreme properties either in the X--rays or in the optical/near--infrared bands or boths, and to investigate their multiwavelength spectral energy distributions (SEDs). I will present the results of a multiwavelength study of X--ray sources selected on the basis of their extreme X-ray to optical properties, i.e. X-ray bright Optically Normal Galaxies (XBONGs) and X-ray emitting Extremely Red Objects (X-EROs). I will also discuss the results about the SED fitting and the morphological analysis of Quasar host galaxies for both classes of sources.	oral		Monday: Type I and II AGN, Absorption, XBONGs, Tuesday: Cluster Formation and Evolution	2
Alison	Coil	acoil@as.arizona.edu	University of Arizona	Clustering of AGN and QSOs at z=1	Using galaxies from the DEEP2 Redshift Survey and AGN from the AEGIS/Chandra survey and QSOs from SDSS, I present the cross-correlation function of AGN/QSOs and 'normal' galaxies at z=1. Using the known clustering of DEEP2 galaxies, this leads to an estimate of the bias and typical host dark matter halo mass of AGN/QSOs as a function of X-ray luminosity, which constrains AGN formation models.	oral	Are AGN really created/fueled by mergers and what evidence do we have for that?	Tuesday: AGN correlation functions, LSS, environments	4
Andrea	Comastri	andrea.comastri@oabo.inaf.it	INAF - Osservatorio Astronomico di Bologna	Everything you always wanted to know about X-Ray Background but were afraid to ask	After a review of AGN synthesis models for the XRB I will discuss the multiwavelength properties of the XRB sources with special emphasis on peculiar/extreme objects such as EROs EXOs XBONG and Compton Thick AGN. The wavelength dependence of selection criteria to obtain an almost complete census of accreting SMBH will be critically discussed.	review		Monday: Type I and II AGN, Absorption, XBONGs, Tuesday: AGN correlation functions, LSS, environments	7
Jennifer	Donley	jdonley@as.arizona.edu	University of Arizona	X-ray Properties of Spitzer-Selected AGN	Hard X-ray selection is generally considered the most efficient and complete way to select AGN. Even the deepest X-ray surveys, however, can miss heavily obscured AGN, which are predicted in significant numbers by models of the X-ray background. We present results of a Spitzer mid-infrared search for AGN in the Chandra Deep Field-North. Approximately 50% of the Spitzer-selected AGN are not readily detected in the X-ray, suggesting that they are either highly obscured or intrinsically X-ray weak. We discuss the properties of this AGN sample and its relation to the X-ray--selected population.	oral		Monday: Type I and II AGN, Absorption, XBONGs, Tuesday: AGN correlation functions, LSS, environments	2
Megan	Eckart	eckart@srl.caltech.edu	Caltech	Recent Results from the SEXSI Survey: Comparison of AGN Selected by Chandra and Spitzer	We present the mid-IR properties and SEDs of spectroscopically-confirmed hard X-ray sources from five moderately-deep (50 - 200 ks) Chandra fields. These sources, identified in the SEXSI (Serendipitous Extragalactic X-ray Source Identification) survey, include (1) X-ray luminous, narrow-lined quasars; (2) X-ray bright, optically-normal galaxies (sources which appear inactive at optical wavelengths but reveal the presence of an active nucleus at X-ray energies); and (3) optically-faint X-ray sources which currently lack spectroscopic classification and are likely to be either at high-redshift, or heavily-obscured. In addition, we investigate the X-ray properties of mid-IR-selected AGN by performing a stacking analysis of sources undetected in X-rays in the Spitzer fields.	oral		Monday: Type I and II AGN, Absorption, XBONGs, Tuesday: AGN correlation functions, LSS, environments	2
Martin	Elvis	elvis@cfa.harvard.edu	Harvard-Smithsonian Center for Astrophysics	1. The Chandra COSMOS Survey 2. Compton-thick & Compton-thin AGN: Two different origins	1. The Chandra COSMOS Survey has just been approved as a Very Large Program for Cycle 8. C-COSMOS surveys the central square degree of the COSMOS field to 200ksec depth, a total of 1.8Ms. The survey science and strategy will be discussed. 2. Evidence that Compton-thick and Compton-thin obscured AGN have two physically different origins on different scales are presented and the implications for surveys and AGN evolution are discussed.	oral		Monday: Type I and II AGN, Absorption, XBONGs, Tuesday: AGN correlation functions, LSS, environments	9
Taotao	Fang	fangt@astro.berkeley.edu	UCB	Chandra Observation of DEEP2 Galaxy Groups and Clusters	I will present a 200 ksec Chandra observation of seven spectroscopically selected, high redshift (0.75 < z < 1.03) galaxy groups and clusters discovered by the DEEP2 Galaxy Redshift Survey in the Extended Groth Strip (EGS).	oral		Monday: 'Normal' Galaxies, Tuesday: Cluster Formation and Evolution	5
Alexis	Finoguenov	alexis@jca.umbc.edu	UMBC/MPE	Statistics of galaxy groups in ultradeep XMM surveys.	We discuss the results of the X-ray search and optical identification of galaxy groups in several ultradeep XMM fields: COSMOS, SXDS/UDS, CDFS and CDFN, detecting a total number of 200 of groups and clusters of galaxies with identifications achieving a z of 1.5. A statistical description of the survey in terms of the cumulative log(N>S)-log(S) distribution compares well with the previous results, although yielding a somewhat higher number of clusters at similar fluxes. For the probed luminosity range of 8e42-2e44 ergs/s, these surveys are in agreement with and adds significantly to the existing data on the cluster luminosity function at high redshifts and implies no substantial evolution at these luminosities to z=1.3.	oral	Ultradeep (equivalent to 1Ms Chandra) surveys need to be extended on the areas with best NIR data. This will bring-up the population of groups and clusters at z>1.2, important both for galaxy evolution and for constraining the faint end of the cluster luminosity function at z>1.2. XMM-Newton could provide a path-finder for those surveys.	Monday: X-ray luminosity functions and evolution, Tuesday: Groups and Interactions	5
Fabrizio	Fiore	fiore@oa-roma.inaf.it	INAF-OAR	The multiwavelength survey of the ELAIS-S1 field	X-ray, optical and infrared observations are needed to provide a full census of AGN. They can be used to select samples of today still elusive Comptonthick AGNs. Deep surveys in these three wide bands are a key ingredient to obtain an unbiased AGN "bolometric" luminosity function. The central 0.6deg2 region of the ELAIS-S1 field is one of the few fields with deep X-ray (XMM, Chandra), optical (B,V,R,I,z, VLT-VIMOS and FORS2 spectroscopy), near infrared (J,K) and mid-infrared (IRAC, MIPS) coverage. It is therefore particularly well suited to test strategies to find both unobscured and moderately obscured AGN shining in X-rays and highly obscured AGN with faint X-ray emission but shining in the infrared. These strategies will then be applied on wider fields like the COSMOS field as soon the Spitzer and Chandra coverages will be ultimated.	oral		Monday: X-ray luminosity functions and evolution, Tuesday: AGN correlation functions, LSS, environments	7
Willam	Forman	wrf9112@gmail.com	Smithsonian Astrophysical Observatory - CFA	XBONGS in the XBootes Field	X-ray Bright Optically Normal Galaxies (XBONGS) have X-ray luminosities characteristic of accretion onto a SMBH, but lack the optical emission lines generally expected for AGN. We have analyzed a sample of 258 XBONGS detected in the XBootes Survey using X-ray, optical, infrared and radio observations. We find that XBONGS are not a single class of object, but fall into four categories -- red early-type galaxies, blue ellipticals, spiral/irregular galaxies and galaxies with AGN colors. We compare the luminosities, colors, X-ray spectra, and Eddington ratios of the XBONGS with those of narrow and broad-line AGN.	oral		Monday: 'Normal' Galaxies, Tuesday: Groups and Interactions	2
Stephan	Frank	frank@astronomy.ohio-state.edu	The Ohio State University, Department of Astronomy	The sources of the CFD-N - classification schemes, absorption estimates and broadband SEDs	We have developed a classification scheme for the sources of the CDF-N with known redshifts based upon the visual appearance of their broadband SEDs. The observed X-ray column density distribution for the complete sample of AGN shows a significant rise of the number of sources with NH > E22.5 cm-2 when we include objects fainter than f(0.5-8.0) keV = 3.0E-15 erg s-1 cm-2. We argue that the ratio of X-ray absorbed to unabsorbed AGN remains constant with redshift, but not with luminosity. The comparison of the X-ray column density estimates with NH, obtained by fits to the broadband NIR-UV SEDs, validates our classification scheme, and allows for placing constraints on unification models.	oral		Monday: Type I and II AGN, Absorption, XBONGs, Tuesday: Groups and Interactions	2
Antonis	Georgakakis	age@ic.ac.uk	Imperial College	The environment of AGN at z~1	I will present results on the environment of X-ray selected AGN at z~1 using data from the Extended Groth strip International Survey (AEGIS) which combines (among others) deep (200ks per field) wide-area (0.5deg2) Chandra observations with extensive optical spectroscopy to R~24mag. The 3-D information is exploited to quantify the local density in the vicinity of an X-ray source by measuring the projected surface density of galaxies within a radius defined by the 3rd nearest neighbour. The main result is that X-ray selected AGN at z~1 avoid underdense regions at the 99.89% confidence level. Moreover, although the overall AGN population shares the same (rich) environment with optical galaxies of similar U-B and M_B, there is also tentative evidence (96%) that AGN with blue host-galaxy colors (U-B<1) reside in denser environments compared to optical galaxies. The results above can be understood as a consequence of the whereabouts of massive galaxies, capable of hostin! g supermassive black holes at their centers, with available cold gas reservoirs, the fuel for AGN activity. At z~1 an increasing fraction of such systems are found in dense regions.	oral	AGN/host-galaxy co-evolution Link between AGN and environment differences among AGN samples selected at different wavelengths, e.g. IR, X-ray, optical	Monday: X-ray luminosity functions and evolution, Tuesday: AGN correlation functions, LSS, environments	4
Marat	Gilfanov	gilfanov@mpa-garching.mpg.de	MPA, Garching	X-ray binaries and CXB.	We discuss contribution of X-ray binaries to the Cosmic X-ray Background. We show that given the cosmic star formation history and Lx-SFR relation for high-mass X-ray binaries, their contribution to the CXB energy flux in the 2-10 keV band can be as large as ~5%. A similar estimate for low-mass X-ray binaries gives an upper limit of a few per cent.	oral		Monday: 'Normal' Galaxies, Tuesday: Cluster Formation and Evolution	1
Roberto	Gilli	roberto.gilli@bo.astro.it	INAF-Osservatorio Astronomico di Bologna	The spatial clustering of X-ray selected AGN	We discuss the 3D clustering properties of AGN selected by X-ray surveys with different area and sensitivity. The measurements performed in the 0.1 deg2 Chandra Msec Fields are compared with those obtained in the 0.4 deg2 CLASXS and 81 deg2 NEP surveys. We also present preliminary results on the spatial clustering of ~300 AGN selected in the 2 deg2 XMM-COSMOS field, where a highly significant (~8sigma) clustering signal has been detected. The issue of cosmic variance is discussed. Finally, we investigate the relation between AGN clustering amplitude vs X-ray luminosity, redshift and obscuration.	oral	I think an important issue to discuss is the XLF and evolution of obscured AGN, particularly of Compton-thick sources. These are particularly relevant to understand the CXRB and compute the relic SMBH mass function. Another important issue is explore is the relation between AGN clustering and AGN luminosity, redshift and obscuration, which would tell us how these objects form and evolve in the cosmic web.	Monday: X-ray luminosity functions and evolution, Tuesday: AGN correlation functions, LSS, environments	4
Josh	Grindlay	josh@cfa.harvard.edu	Harvard	BAT Slew Survey (BATSS): Extending GRBs and AGN Flares to EXIST	We are implementing a survey using Swift/BAT event mode data from the ~60 "target slews" per day vs. the previously available ~3 GRB slews per week. This will increase BAT coverage and sensitivity for high z GRBs as well as AGN flares. Analysis of available GRB slews shows that due to averaging of detector and sky systematics, the sum of slews are appreciably more sensitive than pointed exposures of the same total time. BATSS will search for short duration flares of AGN (~1-10h), as expected from Blazars, and test scanning coded aperture imaging as proposed for EXIST.	oral	-Need for future sensitive all-sky hard X-ray surveys such as EXIST. -Importance of measuring Type II QSO luminosity function for highest Lx -Variability surveys to establish or constrain BH mass (from PDFs)	Monday: Type I and II AGN, Absorption, XBONGs, Tuesday: AGN correlation functions, LSS, environments	9
Ryan	Hickox	rhickox@cfa.harvard.edu	Harvard-Smithsonian Center for Astrophysics	A population of mid-infrared selected, obscured AGN in the Bootes field	We analyze an infrared-selected sample of ~1500 active galactic nuclei (AGN) at redshifts 0.7	oral		Monday: Type I and II AGN, Absorption, XBONGs, Tuesday: AGN correlation functions, LSS, environments	2
Tesla	Jeltema	tesla@ociw.edu	Carnegie Observatories	The Evolution of X-ray Luminous Groups of Galaxies	We have undertaken a multiwavelength project to study the relatively unknown properties of groups and poor clusters of galaxies at intermediate redshifts. The full sample includes nine X-ray selected groups with redshifts between 0.2 and 0.6, and our follow up includes observations with XMM, HST, Gemini, and Keck. The X-ray properties of these systems are generally in good agreement with the properties of low-redshift groups. They appear to follow the scaling relations between luminosity, temperature, and velocity dispersion defined by low-redshift groups and clusters. We also find indications of excess entropy in these systems over self-similar predictions out to large radii. However, the properties of the group galaxies, in particular the central galaxies, show them to be less evolved than similar groups at low-redshift. Roughly half of our intermediate-redshift groups do not have a dominant central elliptical galaxy (BGG), and three of the four BGGs contain mult! iple luminous nuclei indicating recent merging.	oral	I would be interested in a discussion of how large-scale structure formation (for example, cluster mergers and filamentary structure) affects observable properties. What can multiwavelength observations tell about cluster/group formation as well as galaxy evolution? In particular, what are the potential biases in the types of structures and indicators of cluster mass probed by ongoing cluster surveys in X-ray, optical, and SZ, particularly at high-redshift. Second, I would be interested in a discussion of when and in what environments the most massive galaxies in clusters and groups form.	Monday: 'Normal' Galaxies, Tuesday: Cluster Formation and Evolution	5
Christine	Jones	cjones@cfa.harvard.edu	SAO/CfA	Feedback from SMBH in Galaxies and Groups based on a Chandra Survey of Early-type Galaxies	Chandra images show the presense of shocks, jets, cavities and buoyant bubbles in the hot gas in galaxies and groups as well as in rich clusters. This paper will describe the effects of outbursts and the X-ray luminosities of LLAGN from a Chandra survey of 160 early-type galaxies. We find that 80 percent of galaxies have detected X-ray emission from their nuclei and that about 30 percent have detected cavities in the X-ray gas, while in two galaxies, the outbursts have removed much of the expected gaseous halos.	oral	Discussion of Generating and sharing multi-wavelength catalogs for survey fields (possibly set-up working group on this)	Monday: Type I and II AGN, Absorption, XBONGs, Tuesday: AGN correlation functions, LSS, environments	5
Almus	Kenter	akenter@cfa.harvard.edu	SAO	Large scale structure in the Xbootes survey	We present results from the XBootes survey. This survey consists of 126 separate Chandra ACIS-~I observations each of approximately 5000 seconds in duration. The observations comprise a field of view of ~ 9 degree sq and are part of the multi-wavelength NOAO Deep Wide Field Survey (NDWFS). 3293 x-ray sources have been detected with flux~\geq 8X E-15 (0.5-7~keV). These X-ray data are combined with optical observations and the combined data set is observed with the multi-fiber spectrograph (HECTOSPEC) as part of the AGN and Galaxy Evolution Survey (AGES). We present results on large scale structure, redshift distribution, and the three dimensional 2-point correlation.	oral		Monday: X-ray luminosity functions and evolution, Tuesday: AGN correlation functions, LSS, environments	4
Anton	Koekemoer	koekemoe@stsci.edu	Space Telescope Science Institute	Probing AGN Populations beyond Redshifts 6 - 7 using Large X-ray Surveys	The advent of deep and wide multi-wavelength surveys provides unprecedented new opportunities to search for very high redshift active galactic nuclei by constructing samples of sources that are detected at X-ray wavelengths but completely undetected at optical wavelengths to very deep limits. I will describe recent work on constructing samples of candidate AGN at or beyond redshift 6 - 7, such as the `EXO's selected from deep multiband X-ray/HST/IR surveys such as GOODS, COSMOS and similar projects. The optical flux limits are combined with IR detections, together with X-ray fluxes, to model the spectral energy distributions of the sources and help discriminate intermediate-redshift interlopers from the rare number of likely high-redshift sources. The resulting constraints on the number of candidate AGN at or above redshift 7 are used to examine the evolution of the