GRAPPA Colloquia are usually held on second and fourth Mondays of each month, but occasionally some talks do not follow this rule.

• Time: 11:00−12:00 (unless otherwise noted)
• Venue: C4.174 (unless otherwise noted)

See the calendar for all GRAPPA-related events.

See also the schedules for the Nikhef Theory Seminars, Nikhef Colloquia, and API Colloquia.

Summer/Fall term 2019

DATE	SPEAKER	TITLE	NOTE
9 Jul	Antonella Garzilli (Niels Borh Institute)	Constraining the nature of dark matter with the Lyman-alpha forest	C4.174
19 Jul	Bernardita Ried (Universidad de Chile)	Introduction to the Zig-Zag Process	D1.113
13 Sep	Doug Finkbeiner (Harvard University)	Towards more robust and explainable neural nets: Beyond the black box	C4.174
16 Sep	Luca Visinelli (GRAPPA/UvA)	Probing the Early Universe with Axion Physics	C4.174
23 Sep	Manuela Vecchi (KVI-University of Groningen)	Spectral features in galactic cosmic rays	C4.174
25 Sep	Katy Clough (Oxford)	Searching for light particles in strong gravity environments	C4.174 (15:30-16.30)
30 Sep	Christopher Tully (Princeton)	How to be a lensmaker for the PTOLEMY cosmic neutrino telescope?	C4.174
14 Oct	Kenny Ng (GRAPPA)	High-energy Gamma Rays and Neutrinos from the Sun	C4.174
25 Oct	Doug Lin (UCSC)	Stellar rejuvenation and gravitational waves in AGN disks: Analog of planetary systems around massive black holes	C4.174
28 Oct	Gordon Baym (Illinois)	Neutron stars and the properties of matter under extreme conditions	C4.174
5 Nov	Adam Pound (U. of Southampton)	Accurately modelling extreme-mass-ratio inspirals: beyond the geodesic approximation	C4.278 (14:00-15:00)
11 Nov	Subodh Patil (NBI)	Primordial black holes, inflation, and scale invariance	C4.174
19 Nov	Gilles Louppe (University of Liege)	Neural likelihood-free inference	C1.112 (10:00-11:00)
25 Nov	Dan Scolnic (Duke)	New Excitement In Measurements of Dark Energy and The Hubble Constant	C4.174
9 Dec	Enrico Morgante (DESY)		C4.174

Winter/spring term 2019

DATE	SPEAKER	TITLE	NOTE
9 Jan	Karelle Siellez (UCSC)	Gravitational waves, kilonovae & nearby low-luminous short gamma-ray bursts	C1.174
14 Jan	Katharine Kelley (ICRAR)	Axion Dark Matter: Opportunities and Challenges with the SKA	D1.112
21 Jan	Simona Vegetti (MPA Garching)	Strong gravitational lensing as a clean observational probe of dark matter	C1.112
28 Jan	Alex Geringer-Sameth (Imperial College London)	Astrophysical vs. dark matter interpretations of gamma-ray observations in dwarf galaxies	C4.174
31 Jan	Patricia Schmidt (Birmingham University)	GWTC-1: Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs	C4.174
13th Feb	Brad Cenko (NASA Goddard)	Recent Observational Puzzles from Tidal Disruption Flares: Towards Viable Probes in the LSST Era	C4.174
25 Feb	Tetyana Galatyuk (TU Darmstadt)	Exploring baryon rich QCD matter with HADES	C4.174
11 Mar	Francois Foucart (University of New Hampshire)	Modeling Neutron Star Mergers: A numerical perspective	C4.174
14 Mar	Martin Hewitson (Max-Planck-Institut Hannover)	LISA: Space-based Gravitational Wave Astronomy	C4.174
25 Mar	Anastasia Fialkov (Sussex University)	Evaluating Cosmic Dawn	G3.02
1 Apr	Elisabeth Krause (University of Arizona)	Cosmology with the Dark Energy Survey, and Beyond	C4.174
8 Apr	Mairi Sakellariadou (King’s College, UK)	Stochastic gravitational waves background and its anisotropies	C4.124
2nd May	Valarie Domcke (DESY, Hamburg)	Particle production in the early Universe	C4.174 (10:30 – 11:30)
14 May	Eugene Lim (King’s College, UK)	What I talk about when I talk about Inflation	C4.124
21 May	Thomas Helfer (King’s College, UK)	Gravitational waves from exotic compact objects	C4.124
27 May	Matthew Baring (Rice University)	Magnetars as Neutron Star Speelplaatsen for Exotic Physics	C4.174
29 May	Michael Coughlin (Caltech)	Before and after merger: Multi-messenger searches for compact binaries	C4.124
4 Jun	Sarah Gossan (Caltech)	Wave heating from proto-neutron star convection and the core-collapse supernova explosion mechanism	C0.110
24 Jun	Mark Vogelsberger (MIT)	Simulating Galaxy Formation: Illustris, IllustrisTNG and beyond	C4.174

Summer/Fall term 2018

DATE	SPEAKER	TITLE	NOTE
21 Jun	Barbara Patricelli (SNS Pisa)	Searching for Gamma-Ray counterparts to Gravitational Waves from merging binary neutron stars with the Cherenkov Telescope Array	C4.174
27 Jun	Jennifer Barnes (Columbia University)	Nuclear Physics with Multi-Messenger Astronomy	C4.174
30 July	Fiona Panther (Australian National University)	Antimatter in the Milky Way: a theoretical perspective	C4.174
10 Sept	Felicia Krauss (Grappa/API)	TXS 0506+056, IC 170922A, and multimessenger observations of blazers	C4.174
12 Sep	Gregg Hallinan (Caltech)	Imaging All the Sky All the Time in Search of Radio Exoplanets	C4.174
17 Sept	Kenta Hotokezaka (Princeton)	GW170817: Kilonova and r-process origin	C4.174
18 Sept	JJ Eldridge (University of Aukland)	Discussion on Gender diversity in Science and the inclusion of LGBTIQ students	C4.176
18 Sept	JJ Eldridge (University of Aukland)	New BPASS results on Gravitational Wave events, X-ray binaries and Supernovae	C4.176
8 Oct	Daniel Mortlock (Imperial College)	Unbiased estimation of the Hubble constant from binary neutron star mergers	C4.174
22 Oct	Sebastian Baum (Stockholm University)	Paleo Detectors	C4.174
6 Nov	Andrea Bertoldi (IOA)	MIGA and Atom Interferometry for low frequency Gravitational Wave detection	GRAPPA/Nikhef special seminar 14:00-15:00 C4.174
12 Nov	Jane Dai (Niels Bohr Institute, Copenhagen)	Lessons on Super-Eddington Accretion Learnt from Tidal Disruption Events	12:00-13:00 C4.174
26 Nov	David Kaplan (University of Wisconsin)		C4.174
6 Dec	Claire Guepin (IAP)		GRAPPA special seminar 10:30-11:30 C4.174
10 Dec	Ernazar Abdikamalov (Nazarbayev University)	Core-Collapse Supernovae and Gravitational Waves	C4.174
13 Dec	Sarah Gossan (Caltech)	Core-collapse supernova physics in the multi-messenger era	C4.174

Summer term 2018

DATE	SPEAKER	TITLE	NOTE
14 May	Mauricio Bustamante (Niels Bohr Institute, University of Copenhagen)	Distilling fundamental high-energy neutrino physics from the sky	C4.174
28 May	Dima Maliyshev (Friedrich-Alexander-Universität Erlangen-Nürnberg)		C4.174
11 June	Dario Grasso (Pisa INFN and Pisa University)	Cosmic rays shining in the Galactic center	C4.174
26 June	Igor Irastorza (University of Saragoza)	Search for axions with the International Axion Observatory	C4.174

Winter/spring term 2017

DATE	SPEAKER	TITLE	NOTE
23rd Jan	Manuel Meyer (Oskar Klein Centre)	Astrophysical searches for axions and axionlike particles at gamma-ray energies	C4.278
13 Feb	Noam Libeskind (AIP Postdam)	Satellite Galaxies, Local Groups and the Cosmic Web
27 Feb	Aart Heijboer (Nikhef)	KM3NeT: The next generation neutrino telescope
13 Mar	Jesus Zavala (Reykjavik University)	Towards an Effective THeory Of Structure formation (ETHOS)
27 Mar	Mauro Valli (SISSA)	Hints for New Physics from b to s transitions
10th April	Stephen West (Royal Holloway University of London)	Nuclear Dark Matter
19th April	Alexander Tchekhovskoy (UC Berkeley)	Simulations of Black Holes the Astrophysical Laboratories	API/GRAPPA – 11:00am
24th April	Felix Kahlhoefer (DESY)	Phenomenology of self-interacting WIMPs
8 May	Andrew Pontzen (UCL)	Towards robust predictions of dark matter distributions around galaxies
22nd May	Tanguy Pierog (Karlsruhe Institute for Technology)	LHC and Cosmic Rays: The chicken or the egg?
29th May	Jonathan Cornell (McGill University)
7th July	Tracy Slayter (MIT)	When Do Dark Bound States Matter?	Special Seminar: C4.278 (11:00)

Summer/fall term 2016

DATE	SPEAKER	TITLE	NOTE
5 Sept	Ranjan Laha (Kavli/SLAC/Stanford)	Two new avenues in dark matter indirect detection	11.00-12.00
9 Sept	Wei Xue (MIT)	Explore QCD splitting function with CMS open data	Special Seminar A1.10
26 Sept	Alfredo Urbano (CERN)	The last gasp of dark matter effective field theory	C4.278
10 Oct	Bradley Kavanagh (Paris VI)	Dark Matter Particle Astronomy	C4.278
24 Oct	Matthew Malek (University of Sheffield)	Are Neutrinos Responsible for our Matter-Dominated Universe?	C4.278
14 Nov	Matteo Biagetti (UvA)	The peaks approach to halo clustering: theory and applications	C4.278
28 Nov	Valerie Domcke (APC, Paris Diderot)		C4.278
12 Dec	Paul McMillan (Lund University)	Mass modelling the Milky Way with the parallaxes of 10^2 or 10^9 objects	C4.278

Winter/spring term 2016

DATE	SPEAKER	TITLE	NOTE
11 Jan	Yudai Suwa (MPA/Kyoto)	Neutrino acceleration: analogy with Fermi acceleration and Comptonization
25 Jan	Alistar Currie (Imperial London)	Updated results from the 2013 LUX dataset
8 Feb	Valentina Vacca (Cagliari Observatory)	Revealing the gamma-ray sky with the D3PO algorithm
22 Feb	Fiorenza Donato (Turin University)	Dark matter in the cosmic radiation: weak signals, great opportunities
14 Mar	Franco Vazza (Hamburg Observatory)	Constraining non-thermal energy in galaxy clusters
25 Apr	Joerg Jaeckel (Heidelberg University)	WISPy Dark Matter
2 May	Elena Pian (Scuola Normale Superiore di Pisa)	Relativistic jets: an overview of recent progress	Special time: 15:00-16:00
9 May	Brian Reville (Queen’s University Belfast)	Shocks, particle acceleration and magnetic fields
23 May	Alessandra Silvestri (Leiden)	Unveiling dark energy from the large scale structure: challenges and progress
13 Jun	Alberto Dominguez (Madrid)	All the Light There Ever Was
27 Jun	Jacobo Lopez Pavo	Cosmological constraints on the seesaw scale

Summer/fall term 2015

DATE	SPEAKER	TITLE	NOTE
14 Sep	Chanda Prescod-Weinstein (MIT)	Bose-Einstein Condensates in Space!
28 Sep	Massimo Viola (Leiden)	The Kilo Degree Survey: early lensing results
12 Oct	Emma Storm (GRAPPA)	Predictions for Dark Matter in Galaxy Clusters from Future Radio Surveys
26 Oct	Daisuke Kawata (UCL)	Spiral Arm Paradigm in Disk Galaxies	Special time: 11:00-12:00
9 Nov	Erik Verlinde (ITFA)	Emergent Gravity and the Dark Universe	Special time: 13:30-14:30
23 Nov	Sergio Palomares Ruiz (Valencia)	On the flavor composition of the IceCube neutrinos
14 Dec	Stephan Zimmer (OKC)	Observations of nearby Galaxy Clusters with the Fermi Large Area Telescope – Towards the first Gamma Rays from Galaxy Clusters

Winter/spring term 2015

DATE	SPEAKER	TITLE	NOTE
12 Jan	Alvise Raccanelli (JHU)	Testing cosmological models with future galaxy surveys
26 Jan	Francesca Vidotto (Nijmegen)	Planck Stars
9 Feb	Andrew Taylor-Castillo (DIAS)	Cosmic Rays, Galactic Outflow, and Non-Thermal Emission
23 Feb	Christopher McCabe (GRAPPA)	Are WIMPs in trouble?
9 Mar	Daniele Gaggero (SISSA)	Connections between cosmic-ray physics, gamma-ray data analysis and Dark Matter detection
23 Mar	Alexander Westphal (DESY)	Large-field inflation – strings & pheno
13 Apr	Kaustuv Basu (AIfA)	A new look on diffuse radio emissions in galaxy clusters
11 May	Torsten Bringmann (Oslo)	Dark Matter with Long-Range Interactions: From cosmological opportunities to model-building considerations

Summer/fall term 2014

DATE	SPEAKER	TITLE	NOTE
22 Sep	Mustafa Amin (Cambridge)	After Inflation
13 Oct	Thomas Schwetz (Stockholm)	On the neutrino mass spectrum
27 Oct	Enrico Pajer (Utrecht)	The Effective Field Theory of Large Scale Structures
10 Nov	Alessandro Mirizzi (DESY)	What Next on Axion-like Particles: Current Bounds and Discovery Opportunities
24 Nov	Nassim Bozorgnia (GRAPPA)	Probability that Dark Matter have been observed in direct detection experiments
8 Dec	Nicolao Fornengo (Turin)	Particle dark matter searches in the anisotropic sky

Winter/spring term 2014

Date	Speaker	Title	Note
13 Jan	Roberto Franceschini (Maryland)	Post-LHC R-Parity Violating Supersymmetry
27 Jan	Alexandre Marcowith (LUPM)	Young supernova remnants as galactic PeVatrons:prospect for the Cerenkov Telescope Array
10 Feb	Emilio Bellini (Heidelberg)	Non-linearities in cosmology: the Dark Matter bispectrum
24 Feb	Anders Pinzke (Stockholm)	Cosmic rays in galaxy clusters and their non-thermal emission
10 Mar	Irene Tamborra (GRAPPA)	Neutrinos and supernova hydrodynamics
24 Mar	Basudeb Dasgupta (ICTP)	Neutrinos, Dark Matter, and New Interactions
14 Apr	David Marsh (Oxford)	On the cosmology of string theory axions, and their observational signatures
28 Apr	Fabian Schmidt (MPA)	Probing the Primordial Universe with Galaxy Clustering and Shapes
12 May	Aaron Vincent (Valencia)	Dark matter in the Sun: beyond standard models

Summer/fall term 2013

Date	Speaker	Title	Note
26 Jun	Germani Nardini	MSSM, Strong Phase Transition and Baryogenesis versus LHC Constraints	D1.112
8 Jul	Toshifumi Futamase (Tohoku U)	Subaru weak-lensing survey of dark matter subhalos in Coma cluster	D1.112
12 Aug	Takeshi Kobayashi (CITA)	Large Tensor-to-Scalar Ratio in Small-Field Inflation
23 Sep	Christoph Pfrommer (HITS)	The Physics and Cosmology of TeV Blazars	C4.278
30 Sep	Justin Read (Surrey U)	The Local Dark Matter Density
7 Oct	Kohta Murase (IAS, Princeton)	Unveiling the Origin of High-Energy Neutrinos Observed by IceCube	C4.278
21 Oct	Miguel Pato (Munich)	The way forward in dark matter searches	C4.278
25 Oct	Surjeet Rajendran (Stanford)	CASPEr: the Cosmic Axion Spin Precession Experiment	Friday 10:00–11:00, C4.278
28 Oct	Enrico Borrielo (DESY)	Probing Lorentz Invariance Violation with high-energy astrophysical neutrinos
11 Nov	Till Eifert (SLAC)	Searches for the supersymmetric partner of the top quark with the ATLAS Detector
18 Nov	Ted Jacobson (Maryland)	Spacetime approach to force-free magnetospheres	C4.278
25 Nov	Wessel Valkenburg (Leiden)	A Cosmic Skeleton from Fluid Dynamics
9 Dec	Mark E. Dieckmann (Linkoeping University)	Electrostatic shocks in the laboratory, in particle-in-cell simulations and in astrophysics	C4.278
13 Dec	Jacques Delabrouille (APC)	CMB observations from space: Planck and beyond	Friday 15:00–16:00

Winter/spring term 2013

Date	Speaker	Title	Note
14 Jan	Gary Shiu (UW, Madison)	Primordial Fluctuations as a Probe of Fundamental Physics	Special venue: A1.10
28 Jan	Kumiko Kotera (IAP, Paris)	Ultrahigh energy cosmic rays, pulsars, and supernovae	Special venue: B0.207
4 Feb	Toyokazu Sekiguchi (Nagoya U)	Non-Gaussianity in isocurvature perturbations	Special venue: A1.14
11 Feb	Enzo Branchini (Rome)	Galaxy Redshift Surveys: How Distortions Can Yield a Sharper View of the Universe	Special venue: A1.14
18 Feb	Raphael Bousso (LBL)	The Cosmological Constant Problem and the Multiverse: Implications for Dark Energy and Dark Matter	Special time & venue: 15:30-16:30 in A1.04
25 Feb	Matthew Kleban (NYU)	Testing the Multiverse with Observational Cosmology	Special venue: A1.14
4 Mar	Mark Lovell (Durham)	A study of warm dark matter
11 Mar	Matia Fornasa (Nottingham)	What can we learn from gamma-ray anisotropies?	Special venue: A1.14
13 Mar	Javier Redondo (MPP, Munich)	Axion (and WISPy) cold dark matter
8 Apr	Daisuke Nagai (Yale U)	Cosmology with CMB vs. Galaxy Clusters in the Planck Era	Special venue: A1.06
12 Apr	David G. Cerdeño (Madrid)	Target complementarity for direct dark matter detection	Special venue: A1.04
15 Apr	Douglas Spolyar (IAP)	Super cool Inflation-TeV scales	Special venue: A1.14
22 Apr	Michel Tytgat (Université Libre de Bruxelles)	On Dark Matter creation through a Portal	Special venue: A1.06
8 May	Nana Cabo Bizet	Heterotic mini-landscape in blow-up	Special venue: D1.110
21 May	Daan Meerburg (Princeton)	In search of hints of resonance in the CMB power spectrum	Special venue: D1.112

Summer/fall term 2012

Date	Speaker	Title
10 Sep	Donghui Jeong (Johns Hopkins)	Probing initial conditions with the large scale structure of the Universe
24 Sep	Aaron Manalaysay (Zurich)	Beyond the WIMP: the first direct detection limits on sub-GeV dark matter
8 Oct	I-Sheng Yang (UvA)	Stochastic Gravitational Wave Background and Binary Motion
22 Oct	Donnino Anderhalden (Zurich)	Can CDM survive without WDM?
29 Oct	Sofia Sivertsson (KTH)	WIMP diffusion in the Solar System and the neutrino signal from the Sun and the Earth
5 Nov	Sara Rydbeck (DESY)	Long-lived higgsinos as probes of gravitino dark matter at the LHC
12 Nov	Cristiano Galbiati (Princeton)	A Walk on the Dark Side
26 Nov	Alejandro Ibarra (TUM, Munich)	Higher order effects in dark matter annihilations
10 Dec	Carsten Rott (Ohio State)	Low-energy neutrinos as a novel signal for Dark Matter captured in the Sun