Julien Lavalle

66
Documents
Affiliation actuelle
  • Laboratoire Univers et Particules de Montpellier (LUPM)

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Publications

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Analytical models of dark matter subhalos for indirect dark matter searches

Julien Lavalle
18th International Conference on Topics in Astroparticle and Underground Physics, Aug 2023, Vienne, Austria. pp.045, ⟨10.22323/1.441.0045⟩
Communication dans un congrès hal-04528811 v1
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AMS-02 antiprotons are consistent with a secondary astrophysical origin

Mathieu Boudaud , Yoann Génolini , Laurent Derome , Julien Lavalle , David Maurin et al.
36th International Cosmic Ray Conference, Jul 2019, Madison, United States. pp.038, ⟨10.22323/1.358.0038⟩
Communication dans un congrès hal-02973170 v1
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New cosmic ray MIN-MED-MAX benchmark models for dark matter indirect signatures

Pierre Salati , Mathieu Boudaud , Marco Cirelli , Laurent Derome , Yoann Génolini et al.
ICRC 2021 - 37th International Cosmic Ray Conference - Dark Matter, Jul 2021, Berlin, Germany. pp.572, ⟨10.22323/1.395.0572⟩
Communication dans un congrès hal-03359022 v1
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Classification of targets for gamma-ray dark matter searches with velocity-dependent annihilation and substructure boost

Thomas Lacroix , Gaétan Facchinetti , Judit Pérez-Romero , Martin Stref , Julien Lavalle et al.
37th International Cosmic Ray Conference, Jul 2021, Berlin, Germany. pp.571, ⟨10.22323/1.395.0571⟩
Communication dans un congrès hal-03373327 v1

Dynamically constrained model of galactic subhalos and impact on dark matter searches

M. Stref , Julien Lavalle
15th International Conference on Topics in Astroparticle and Underground Physics, Jul 2017, Sudbury, Canada. pp.012079, ⟨10.1088/1742-6596/1342/1/012079⟩
Communication dans un congrès hal-02458775 v1

What do Galactic electrons and positrons tell us about dark matter?

Mathieu Boudaud , Sami Caroff , Antje Putze , Yoann Genolini , Julien Lavalle et al.
35th International Cosmic Ray Conference, Jul 2017, Busan, South Korea. pp.915, ⟨10.22323/1.301.0915⟩
Communication dans un congrès hal-01891377 v1

Dynamically constrained model of galactic subhalos and impact on dark on dark matter searches

M. Stref , Julien Lavalle
52nd Rencontres de Moriond on Very High Energy Phenomena in the Universe, Mar 2017, La Thuile, Italy. pp.239-246
Communication dans un congrès hal-01758060 v1
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GeV-TeV Galactic cosmic rays

Julien Lavalle
16th Lomonosov Conference on Elementary Particle Physics, Aug 2013, Moscow, Russia
Communication dans un congrès hal-00993487 v1

DM subhalos in the Galaxy & Cosmic rays: Semi-analytic model using results/uncertainties from N-body experiments

J. Lavalle
5th Workshop on Science with the New Generation of High Energy Gamma-ray Experiments (SciNeGHE07), Jun 2007, Frascati, Italy
Communication dans un congrès in2p3-00232591 v1

Indirect Detection of Dark Matter with Antimatter: Demystifying the Clumpiness Boost Factors

J. Lavalle
5th Workshop on Science with the New Generation of High Energy Gamma-ray Experiments (SciNeGHE07), Jun 2007, Frascati, Italy. pp.1-9
Communication dans un congrès in2p3-00193289 v1

Anti-proton and positron Cosmic Rays from Dark Matter annihilation around Intermediate Mass Black Holes

J. Lavalle
RICAP'07 - Roma International Conference on Astroparticle Physics, Jun 2007, Rome, Italy. pp.247-249, ⟨10.1016/j.nima.2008.01.047⟩
Communication dans un congrès in2p3-00194329 v1

Indirect search for dark matter in M31 with the CELESTE experiment

J. Lavalle
6th UCLA Symposium on Sources and Detection of Dark Matter and Dark Energy in the Universe, Feb 2005, Marina del Rey, California, United States. pp.169-173, ⟨10.1016/j.newar.2005.01.026⟩
Communication dans un congrès istex in2p3-00024348 v1

Detecting supersymmetric dark matter in M31 with CELESTE ?

E. Nuss , G. Moultaka , Alain Falvard , E. Giraud , A. Jacholkowska et al.
The SN factory Consortium - SF2A-2002 - Semaine de l'Astrophysique Française, Jun 2002, Paris, France
Communication dans un congrès in2p3-00087404 v1

Analytical insight into dark matter subhalo boost factors for Sommerfeld-enhanced $s$- and $p$-wave $\gamma$-ray signals

Gaétan Facchinetti , Martin Stref , Thomas Lacroix , Julien Lavalle , Judit Pérez-Romero et al.
Journal of Cosmology and Astroparticle Physics, 2023, 2023 (02), pp.004. ⟨10.1088/1475-7516/2023/02/004⟩
Article dans une revue hal-03625359 v1
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Statistics for dark matter subhalo searches in gamma rays from a kinematically constrained population model: Fermi-LAT-like telescopes

Gaétan Facchinetti , Julien Lavalle , Martin Stref
Physical Review D, 2022, 106 (8), pp.083023. ⟨10.1103/PhysRevD.106.083023⟩
Article dans une revue hal-02903255 v1
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Classification of gamma-ray targets for velocity-dependent and subhalo-boosted dark-matter annihilation

Thomas Lacroix , Gaétan Facchinetti , Judit Pérez-Romero , Martin Stref , Julien Lavalle et al.
Journal of Cosmology and Astroparticle Physics, 2022, 10, pp.021. ⟨10.1088/1475-7516/2022/10/021⟩
Article dans une revue hal-03625365 v1

Implication of the $S_8$ tension for decaying dark matter with warm decay products

Guillermo Abellán , Riccardo Murgia , Vivian Poulin , Julien Lavalle
Physical Review D, 2022, 105 (6), pp.063525. ⟨10.1103/PhysRevD.105.063525⟩
Article dans une revue hal-03880317 v1

Microlensing constraints on clustered primordial black holes

Mihael Petač , Julien Lavalle , Karsten Jedamzik
Physical Review D, 2022, 105 (8), pp.083520. ⟨10.1103/PhysRevD.105.083520⟩
Article dans une revue hal-03536639 v1
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New minimal, median, and maximal propagation models for dark matter searches with Galactic cosmic rays

Yoann Génolini , Mathieu Boudaud , Marco Cirelli , Laurent Derome , Julien Lavalle et al.
Physical Review D, 2021, 104 (8), pp.083005. ⟨10.1103/PhysRevD.104.083005⟩
Article dans une revue hal-03178521 v1

In-depth analysis of the clustering of dark matter particles around primordial black holes. Part I. Density profiles

Mathieu Boudaud , Thomas Lacroix , Martin Stref , Julien Lavalle , Pierre Salati
Journal of Cosmology and Astroparticle Physics, 2021, 08, pp.053. ⟨10.1088/1475-7516/2021/08/053⟩
Article dans une revue hal-03269821 v1
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Testing the predictions of axisymmetric distribution functions of galactic dark matter with hydrodynamical simulations

Mihael Petač , Julien Lavalle , Arturo Núñez-Castiñeyra , Emmanuel Nezri
Journal of Cosmology and Astroparticle Physics, 2021, 08, pp.031. ⟨10.1088/1475-7516/2021/08/031⟩
Article dans une revue hal-03262627 v1
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Predicting the dark matter velocity distribution in galactic structures: tests against hydrodynamic cosmological simulations

Thomas Lacroix , Arturo Núñez-Castiñeyra , Martin Stref , Julien Lavalle , Emmanuel Nezri
Journal of Cosmology and Astroparticle Physics, 2020, 10, pp.031. ⟨10.1088/1475-7516/2020/10/031⟩
Article dans une revue hal-02628073 v1
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Galactic halo size in the light of recent AMS-02 data

N. Weinrich , M. Boudaud , L. Derome , Y. Génolini , Julien Lavalle et al.
Astronomy & Astrophysics - A&A, 2020, 639, pp.A74. ⟨10.1051/0004-6361/202038064⟩
Article dans une revue hal-02895623 v1
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AMS-02 antiprotons are consistent with a secondary astrophysical origin

Mathieu Boudaud , Yoann Génolini , Laurent Derome , Julien Lavalle , David Maurin et al.
Physical Review Research, 2020, 2 (2), pp.023022. ⟨10.1103/PhysRevResearch.2.023022⟩
Article dans une revue hal-02157654 v1
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$\gamma$-ray and $\nu$ searches for dark matter subhalos in the Milky Way with a baryonic potential

Moritz Hütten , Martin Stref , Céline Combet , Julien Lavalle , David Maurin
Galaxies, 2019, 7 (2), pp.60. ⟨10.3390/galaxies7020060⟩
Article dans une revue hal-02122465 v1
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Remnants of Galactic Subhalos and Their Impact on Indirect Dark-Matter Searches

Martin Stref , Thomas Lacroix , Julien Lavalle
Galaxies, 2019, 7 (2), pp.65. ⟨10.3390/galaxies7020065⟩
Article dans une revue hal-02123884 v1
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Robust cosmic-ray constraints on p-wave annihilating MeV dark matter

Mathieu Boudaud , Thomas Lacroix , Martin Stref , Julien Lavalle
Physical Review D, 2019, 99 (6), pp.061302. ⟨10.1103/PhysRevD.99.061302⟩
Article dans une revue hal-01885830 v1
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Cosmic-ray transport from AMS-02 boron to carbon ratio data: Benchmark models and interpretation

Yoann Genolini , Mathieu Boudaud , P. I. Batista , S Caroff , Laurent Derome et al.
Physical Review D, 2019, 99, pp.123028. ⟨10.1103/PhysRevD.99.123028⟩
Article dans une revue hal-02101560 v1
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Anatomy of Eddington-like inversion methods in the context of dark matter searches

Thomas Lacroix , Martin Stref , Julien Lavalle
Journal of Cosmology and Astroparticle Physics, 2018, 09, pp.040. ⟨10.1088/1475-7516/2018/09/040⟩
Article dans une revue hal-01797132 v1
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Modeling dark matter subhalos in a constrained galaxy: Global mass and boosted annihilation profiles

Martin Stref , Julien Lavalle
Physical Review D, 2017, 95 (6), pp.063003. ⟨10.1103/PhysRevD.95.063003⟩
Article dans une revue hal-01377666 v1
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Novel cosmic-ray electron and positron constraints on MeV dark matter particles

Mathieu Boudaud , Julien Lavalle , Pierre Salati
Physical Review Letters, 2017, ⟨10.1103/PhysRevLett.119.021103⟩
Article dans une revue hal-01421563 v1
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Indications for a high-rigidity break in the cosmic-ray diffusion coefficient

Y. Génolini , P. D. Serpico , M. Boudaud , S Caroff , V. Poulin et al.
Physical Review Letters, 2017, 119, pp.241101. ⟨10.1103/PhysRevLett.119.241101⟩
Article dans une revue hal-01551685 v1
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Making sense of the local Galactic escape speed estimates in direct dark matter searches

Julien Lavalle , Stefano Magni
Physical Review D, 2015, 91 (2), pp.023510. ⟨10.1103/PhysRevD.91.023510⟩
Article dans une revue hal-02017061 v2
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Direct constraints on diffusion models from cosmic-ray positron data: Excluding the MIN model for dark matter searches

Julien Lavalle , David Maurin , Antje Putze
Physical Review D, 2014, 90, pp.081301. ⟨10.1103/PhysRevD.90.081301⟩
Article dans une revue hal-01021892 v1

Cosmic-ray antiproton constraints on light singlino-like dark matter candidates

David G. Cerdeño , Timur Delahaye , Julien Lavalle
Nuclear Physics B, 2012, 854, pp.738-779. ⟨10.1016/J.NUCLPHYSB.2011.09.020⟩
Article dans une revue hal-00640514 v1

Diffuse gamma-ray constraints on dark matter revisited. I: the impact of subhalos

Steve Blanchet , Julien Lavalle
Journal of Cosmology and Astroparticle Physics, 2012, pp.021. ⟨10.1088/1475-7516/2012/11/021⟩
Article dans une revue hal-00777563 v1
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Indirect dark matter searches: towards a consistent top-bottom approach for studying the gamma-ray signals and associated backgrounds

Emmanuel Nezri , Julien Lavalle , Romain Teyssier
Physical Review D, 2012, 86, pp.063524. ⟨10.1103/PhysRevD.86.063524⟩
Article dans une revue hal-00777655 v1

Dark Matter Indirect Signatures

Julien Lavalle , Pierre Salati
Comptes Rendus. Physique, 2012, 13 (6-7), pp.740-782. ⟨10.1016/j.crhy.2012.05.001⟩
Article dans une revue hal-00777643 v1

Impact of the spectral hardening of TeV cosmic rays on the prediction of the secondary positron flux

J. Lavalle
Monthly Notices of the Royal Astronomical Society, 2011, 414, pp.985-991. ⟨10.1111/J.1365-2966.2011.18294.X⟩
Article dans une revue hal-00628257 v1

Implications of high-resolution simulations on indirect dark matter searches

Lidia Pieri , Julien Lavalle , Gianfranco Bertone , Enzo Branchini
Physical Review D, 2011, 83, pp.23518. ⟨10.1103/PHYSREVD.83.023518⟩
Article dans une revue hal-00628256 v1

ANTARES: the first undersea neutrino telescope

M. Ageron , J.A. Aguilar , Imen Al Samarai , A. Albert , F. Ameli et al.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2011, 656, pp.11-38. ⟨10.1016/j.nima.2011.06.103⟩
Article dans une revue in2p3-00593848 v1

Galactic electrons and positrons at the Earth:new estimate of the primary and secondary fluxes

T. Delahaye , J. Lavalle , R. Lineros , F. Donato , N. Fornengo
Astronomy & Astrophysics - A&A, 2010, 524 (A51), pp.31. ⟨10.1051/0004-6361/201014225⟩
Article dans une revue hal-00611920 v1

Sunyaev-Zel'dovich effects from annihilating dark matter in the Milky Way: Smooth halo, subhalos, and intermediate-mass black holes

Julien Lavalle
Physical Review D, 2010, 82, pp.83521. ⟨10.1103/PHYSREVD.82.083521⟩
Article dans une revue hal-00628751 v1

Galactic electrons and positrons at the Earth: new estimate of the primary and secondary fluxes

T. Delahaye , J. Lavalle , R. Lineros , F. Donato , N. Fornengo
Astronomy & Astrophysics - A&A, 2010, 524, pp.51. ⟨10.1051/0004-6361/201014225⟩
Article dans une revue hal-00628255 v1

On the Sunyaev-Zel'dovich effect from dark matter annihilation or decay in galaxy clusters

Julien Lavalle , Céline Bœhm , Julien Barthès
Journal of Cosmology and Astroparticle Physics, 2010, 02, pp.005. ⟨10.1088/1475-7516/2010/02/005⟩
Article dans une revue hal-00628252 v1

10 GeV dark matter candidates and cosmic-ray antiprotons

Julien Lavalle
Physical Review D, 2010, 82, pp.81302. ⟨10.1103/PHYSREVD.82.081302⟩
Article dans une revue hal-00628253 v1

Intermediate Mass Black Holes and Nearby Dark Matter Point Sources: A Critical Reassessment

Torsten Bringmann , Julien Lavalle , Pierre Salati
Physical Review Letters, 2009, 103, pp.161301. ⟨10.1103/PHYSREVLETT.103.161301⟩
Article dans une revue hal-00628251 v1
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Performance of the First ANTARES Detector Line

M. Ageron , J.A. Aguilar , A. Albert , F. Ameli , M. Anghinolfi et al.
Astroparticle Physics, 2009, 31, pp.277-283. ⟨10.1016/j.astropartphys.2009.02.008⟩
Article dans une revue in2p3-00365372 v1

Search for diffuse gamma rays from the Galactic anticentre region above 100 GeV with CELESTE

R.J. Britto , A. Jacholkowska , F. Piron , E. Brion , J.B. Gordo et al.
Astronomy & Astrophysics - A&A, 2009, 498, pp.L25-L28. ⟨10.1051/0004-6361/200811476⟩
Article dans une revue in2p3-00391867 v1

Clarifying the covariant formalism for the Sunyaev-Zel'dovich effect due to relativistic nonthermal electrons

Céline Bœhm , Julien Lavalle
Physical Review D, 2009, 79, pp.83505. ⟨10.1103/PHYSREVD.79.083505⟩
Article dans une revue hal-00628244 v1

Galactic secondary positron flux at the Earth

T. Delahaye , J. Lavalle , R. Lineros , F. Donato , N. Fornengo et al.
Astronomy & Astrophysics - A&A, 2009, 501 (3), pp.821-833. ⟨10.1051/0004-6361/200811130⟩
Article dans une revue hal-00628249 v1

Full calculation of clumpiness boost factors for antimatter cosmic rays in the light of ΛCDM N-body simulation results. Abandoning hope in clumpiness enhancement?

J. Lavalle , Q. Yuan , D. Maurin , X.-J. Bi
Astronomy & Astrophysics - A&A, 2008, 479, pp.427-452. ⟨10.1051/0004-6361:20078723⟩
Article dans une revue hal-00628234 v1

Antimatter cosmic rays from dark matter annihilation: First results from an N-body experiment

J. Lavalle , E. Nezri , E. Athanassoula , F.-S. Ling , R. Teyssier
Physical Review D, 2008, 78, pp.103526. ⟨10.1103/PHYSREVD.78.103526⟩
Article dans une revue hal-00628243 v1

Studies of a full scale mechanical prototype line for the ANTARES neutrino telescope and tests of a prototype instrument for deep-sea acoustic measurements

M. Ageron , J.A. Aguilar , A. Albert , F. Ameli , M. Anghinolfi et al.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2007, 581, pp.695-708. ⟨10.1016/j.nima.2007.08.148⟩
Article dans une revue in2p3-00172465 v1

Clumpiness of dark matter and the positron annihilation signal

J. Lavalle , J. Pochon , P. Salati , Richard Taillet
Astronomy & Astrophysics - A&A, 2007, 462, pp.827-840. ⟨10.1051/0004-6361:20065312⟩
Article dans une revue hal-00628224 v1

The ANTARES Optical Beacon System

M. Ageron , J.A. Aguilar , A. Albert , F. Ameli , M. Anghinolfi et al.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2007, 578, pp.498-509. ⟨10.1016/j.nima.2007.05.325⟩
Article dans une revue in2p3-00136988 v1
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Antiproton and positron signal enhancement in dark matter minispikes scenarios

Pierre Brun , Gianfranco Bertone , Julien Lavalle , Pierre Salati , Richard Taillet
Physical Review D, 2007, 76 (8), pp.83506. ⟨10.1103/PHYSREVD.76.083506⟩
Article dans une revue hal-00628226 v1

Mrk 421, Mrk 501, and 1ES 1426+428 at 100 GeV with the CELESTE Cherenkov Telescope

D.A. Smith , E. Brion , R. Britto , Pascal Bruel , J. Bussons Gordo et al.
Astronomy & Astrophysics - A&A, 2006, 459, pp.453-464. ⟨10.1051/0004-6361:20065884⟩
Article dans une revue in2p3-00113422 v1

Indirect detection of dark matter

J. Carr , G. Lamanna , J. Lavalle
Reports on Progress in Physics, 2006, 69, pp.2475-2512. ⟨10.1088/0034-4885/69/8/R05⟩
Article dans une revue istex in2p3-00138772 v1

Indirect search for dark matter in M 31 with the CELESTE experiment

J. Lavalle , H. Manseri , A. Jacholkowska , E. Brion , R. Britto et al.
Astronomy & Astrophysics - A&A, 2006, 450, pp.1-8. ⟨10.1051/0004-6361:20054340⟩
Article dans une revue hal-00628187 v1
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Modèle effectif de matière noire fermionique - Recherche de matière noire supersymétrique avec le télescope gamma CELESTE

Julien Lavalle
Cosmologie et astrophysique extra-galactique [astro-ph.CO]. Université Blaise Pascal - Clermont-Ferrand II, 2004. Français. ⟨NNT : ⟩
Thèse tel-00142472 v1

Recherche de matiere noire supersymetrique

J. Lavalle
Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]. 2001
Mémoire d'étudiant in2p3-00010091 v1