A view from Italy on galaxy clusters in the 21st century

Naples, 2018 September 10-13

Following the previous meeting CLUSTER1 held in Torino in 2017, the whole Italian community interested and working on galaxy clusters & groups organizes its 2nd national meeting to gather together, share ideas and discuss common projects.


  • to map the current situation within the national community of the ongoing research activities on galaxy clusters & groups, deemed both as cosmological probes and astrophysical laboratories, and studied through either theoretical models, numerical simulations, or multi-band observations;
  • to share ideas on the fundamental questions that these research activities aim at solving, and we feel more urgent;
  • to get an overview on how the Italian community is involved in major international collaborations.

We expect to cover a large variety of topics, including: the physics of the intracluster medium and of the feedback processes; the importance of clusters for cosmological studies; numerical simulations; theoretical models; weak and strong lensing; Sunyaev-Zeldovich effect; and multi-wavelength observations from radio to X-ray.

The talks should be focused on the role of the Italian community involved in the study of the galaxy clusters & groups science, as part of national projects as well as international ones. Abstract aiming at presenting the current status and the latest results on "local" projects, and the state-of-art of research activity of italian groups involved in international collaboration are welcome.

The meeting format will also include a half-day open discussion on the key questions that can be addressed in the near future on galaxy clusters & groups.


Monday, September 10

14:00-14:30 INTRO - Ettori - X-ray Galaxy Clusters: from X-COP to XMM Heritage and Athena

14:30-14:50 Ghirardini - Thermodynamic properties of the intracluster medium out to R200 in the XCOP sample

14:50-15:10 Lovisari - X-ray scaling relations from a representative sample of Planck clusters

15:10-15:30 Liu - Evolution of the Iron Excess in the ICM of Relaxed Galaxy Clusters

15:30-15:50 Rossetti - Exploiting the Plank Legacy survey: Properties of SZ-Selected galaxy clusters

15:50-16:30 Coffee break

16:30-16:50 De Petris- High angular resolution SZ mapping of clusters of galaxies with NIKA2

16:50-17:10 Bourdin - Cluster imaging in the (sub)-millimetric band

17:10-17:25 Baldi - Error assessment in Sunyaev–Zel’dovich maps of galaxy clusters in the X-COP sample

17:25-17:45 Luzzi - Towards a measurement of cluster gas temperatures using the relativistic Sunyaev-Zel’dovich effect

Tuesday, September 11

9:00-9:20 Saro - The South Pole Telescope (SPT) cluster survey and its cosmological implications

9:20-9:40 Kozmanyan - Derivation of the Hubble constant using X-ray and Sunyaev-Zel'dovich galaxy clusters

9:40-10:10 INTRO - Borgani - Cosmology and astrophysics with galaxy clusters: the role of simulations

10:10-10:30 Biffi - The physics of the ICM from cosmological hydrodynamical simulations

10:30-10:45 Bassini - Correlation between SMBHs of BCG and global properties of the hosting Cluster

10:45-11:25 Coffee break

11:25-11:45 Gaspari - Raining on Clusters and Supermassive Black Holes

11:45-12:05 Valdarnini - A multifiltering study of turbulence in a large sample of simulated galaxy clusters

12:05-12:25 Donnert - Towards Exascale simulations of the ICM dynamo with Wombat

12:25-12:40 Gastaldello - A NuSTAR view on galaxy clusters: the case of A523

12:40-14:40 Lunch

14:40-15:10 INTRO - Bonafede - Particle acceleration in the ICM: news from LOFAR observations

15:10-15:30 Cassano - Current status and future prospects of statistical investigation of non-thermal phenomena in galaxy clusters

15:30-15:50 Brunetti - Turbulence and non thermal phenomena in galaxy clusters : what do we understand?

15:50-16:50+ Discussion on present/future observations/simulations/modelization of the ICM and non-thermal component (Discussion leaders: Bonafede/Borgani/Brunetti/Ettori/Mazzotta)

17:30-20:00 Guided tour of the Naples historical centre.

20:30 Social Dinner at O' Munaciello

Wednesday, September 12

9:00-9:30 INTRO - Biviano - Clusters in the optical/IR: internal structure, galaxy evolution, cosmology

9:30-9:50 Granato - BCG Mass Evolution in Cosmological Hydro-Simulations

9:50-10:10 Gjergo - Dust Evolution in Galaxy Cluster Simulations

10:10-10:30 Andreon - The cosmic epoch dependence of environmental effects on size evolution of red-sequence early-type galaxies

10:30-11:00 Coffee break

11:00-11:20 Paolillo - The Fornax cluster Deep Survey (FDS) wit VST

11:20-11:40 Moretti - The GASP survey: gas stripping in local cluster galaxies

11:40-12:00 Vulcani - Resolving the pre-processing of galaxies in groups and filaments with MUSE

12:00-12:20 Bianconi - LoCuSS: Galaxy properties in and around massive clusters at z=0.2

12:20-12:40 Haines - The Shapley Supercluster Survey

12:40-14:40 Lunch

14:40-15:00 Rodriguez - Quantifying the suppression of the (un)-obscured star formation in galaxy cluster cores at 0.2 < z < 0.9

15:00-15:15 Tortorelli - The Kormendy Relation of Galaxies in the Frontier Fields Clusters: Abell S1063 and MACSJ1149.5+2223

15:15-15:35 Olave-Rojas - Galaxy pre-processing: red and blue galaxy fractions in substructures around z~0.4 galaxy clusters

15:35-15:55 Giocoli - Future Frontiers of Lensing Simulations: MOKA and friends

15:55-16:25 Coffee break

16:25-16:45 Grillo - Probing the cores of galaxy clusters with strong gravitational lensing

16:45-17:05 Meneghetti - Strong Lensing by substructure in galaxy clusters

17:05-17:20 Bergamini - Improving galaxy cluster strong lensing models using internal dynamics of cluster members

17:20-17:40 Izzo - Introducing the PSZ2LenS cluster sample

17:40-18:40+ Discussion on present/future observations/simulations/modelization in optical +EUCLID/LSST (Discussion leaders: Biviano/DeLucia/Meneghetti/Vulcani) link

Thursday, September 13

9:00-9:20 Vazza - The non-thermal side of large-scale structures

9:20-9:40 De Gasperin - Galaxy clusters at low and ultra-low frequencies

9:40-10:00 Botteon - LOFAR observations of merging galaxy clusters

10:00-10:20 Cau - New detection and statistics of diffuse radio sources in galaxy clusters

10:20-10:40 Cuciti - Statistics of radio halos in the largest mass-selected sample of galaxy clusters

10:40-10:55 Di Gennaro - Radio-X ray observations at Galaxy Cluster shocks

10:55-11:25 Coffee break

11:25-11:40 Ignesti - Thermal/non-thermal connections in radio mini-halos

11:40-11:55 De Gregory - The Radio-CLASH/GCAV project: BCGs and diffuse emission in a sample of galaxy clusters

11:55-12:15 Loi - Simulations of the polarized radio sky

12:15-12:30 Stuardi - Magnetic field amplification by low Mach-number shocks: the case of RXCJ1314.4-2515

12:30-12:45 Locatelli - Assessing the magnetized cosmic web with radio observations around cluster Abell2744

12:45-13:05 Ricci - Stormy weather in 3C 196.1: an hybrid radio galaxy shaping the environment of the surrounding cluster ICM

13:05-15:00 Lunch

15:00-16:00+ Round table with SOC


CLUSTER2 will take place within the Complesso dei SS. Marcellino e Festo, in the very heart of old town in Naples, nearby the University main site.



Several hotels and B&B are available in the city centre. We can suggest some hotels:

- Grand Hotel Oriente

- Renaissance Naples Hotel Mediterraneo

- Hotel Mercure Napoli Centro Angioino

- Hotel Royal continental

- Napolit'Amo e Principe di Napoli

- Culture Hotel Centro Storico

- Hotel Costantinopoli 104

- Hotel Maison Degas

We recommend to book your accommodation at the earliest possible time. September is still high season in Naples.


For the registration, please fill in the registration form with the title and abstract of your contribution, if you would like to present a talk. The deadline for the submission of abstracts is June 8th, while the deadline for the registration is July 22nd. The fee is 80 Euros to be paid online by credit cards or by bank transfer (see Payment instructions section) and is 100 Euros for payments at the registration desk and it includes coffee breaks. Graduate students will not pay the fee, and there will be available some financial support for PhD students, to cover the fee. Thus, PhD students who need financial support, can request the coverage of the fee sending an e-mail to by 22 June, explaining why.


The conference dinner will cost additionally 35 Euros and must be payed cash at the registration desk the day of your arrival.


The conference fee of 80.00 Euro can be payed via credit cards, or via bank transfer, until July 22. It will be possible to pay an increased fee of 100.00 Euro at the registration desk, the day of arrival.

Bank transfer information

Account owner: Istituto Nazionale di Astrofisica

Bank address:

BNL – Banca Nazionale del Lavoro

Via Costantino Nigra, n. 15

00194 ROMA

Sportello c/o CONI


IBAN: IT69S0100503309000000218500


Reason for payment: “OACN CLUSTER2 <Name of participant>”

Please, send to a copy of the receipt of the bank transfer to allow us track the payment.


June 08: Abstract submission deadline

July 22: Registration and on-line payment deadline (registration fee 80 EUR)

We recommend to book your accommodation at the earliest possible time. The second week of September is still high season in Naples.

SOC: Bonafede (Uni-Bo), Covone (Uni-Na), De Lucia (INAF-OATs), Ettori (INAF-OASBo), Gastaldello (INAF-IASF-Mi), Girardi (Uni-Ts), Govoni (INAF-OACa), Iovino (INAF-OABrera), Massaro (Uni-To), Mazzotta (Uni-Rm), Meneghetti (INAF-OASBo), Mercurio (INAF-OACN), Poggianti (INAF-OAPd), Radovich (INAF-OAPd), Rasia (INAF-OATs), Tozzi (INAF-OAA)

LOC: Rosario Aiello (INAF-OACN), Roberto Bastone (Uni-Na) , Stefano Cavuoti (Uni-Na), Giovanni Covone (Uni-Na), Giulia De Somma (Uni-Na), Andrea Di Dato (INAF-OACN), Denise Lanzieri (Uni-Na), Amata Mercurio (INAF-OACN), Maurizio Paolillo (Uni-Na), Fabio Ragosta (Uni-Na).