108 citations · 662 across the 34 of their papers we have counts for
34 papers · 1 filter
Weakly supervised machine learning for model-agnostic searches of new phenomena in the -ray sky
Michael Krämer, Silvia Manconi, Kathrin Nippel
The -ray sky, as observed by the Fermi Large Area Telescope, contains a significant number of unassociated sources that may point to new astrophysical populations or more exotic…
Search for TeV emission from spider millisecond pulsars with HAWC
R. Alfaro, E. Anita-Rangel, M. Araya +90
Millisecond pulsars (MSPs) are observed to emit multi-wavelength radiation, from radio to GeV. Spider MSPs, which interact with their low-mass companion in close orbit (orbital per…
A wide-field X-ray search for the Geminga pulsar halo with SRG/ART-XC
Roman Krivonos, Silvia Manconi, Vadim Arefiev +8
Searches for the putative large-scale X-ray halo around the Geminga pulsar have been extensively performed using various narrow field-of-view X-ray telescopes. In this paper, we pr…
Multiwavelength observation of a candidate pulsar halo LHAASO J0621+3755 and the first X-ray detection of PSR J0622+3749
C. B. Adams, A. Archer, P. Bangale +71
Pulsar halos are regions around middle-aged pulsars extending out to tens of parsecs. The large extent of the halos and well-defined central cosmic-ray accelerators make this new c…
No evidence for gamma-ray emission from the Sagittarius dwarf spheroidal galaxy
Christopher Eckner, Silvia Manconi, Francesca Calore
More than a decade ago, the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope unveiled the existence of two gigantic gamma-ray lobes known as the Fermi bubbles. While…
Disclosing the catalog pulsars dominating the Galactic positron flux
Luca Orusa, Silvia Manconi, Fiorenza Donato +1
The cosmic-ray flux of positrons is measured with high precision by the space-borne particle spectrometer AMS-02. The hypothesis that pulsars and their nebulae can significantly co…
Geminga's pulsar halo: an X-ray view
Silvia Manconi, Jooyun Woo, Ruo-Yu Shang +6
Geminga is the first pulsar around which a remarkable TeV gamma-ray halo extending over a few degrees was discovered by MILAGRO, HAWC and later by H.E.S.S., and by Fermi-LAT in the…
The Galactic center excess at the highest energies: morphology and photon-count statistics
Silvia Manconi, Francesca Calore, Fiorenza Donato
The nature of the GeV gamma-ray Galactic center excess (GCE) in the data of Fermi-Large Area Telescope (LAT) is still to be unveiled. We present a new analysis of the inner Galaxy…
The High Energy X-ray Probe (HEX-P): Supernova remnants, pulsar wind nebulae, and nuclear astrophysics
Stephen Reynolds, Hongjun An, Moaz Abdelmaguid +29
HEX-P is a probe-class mission concept that will combine high spatial resolution X-ray imaging ( full width at half maximum) and broad spectral coverage (0.2--80 keV) with an…
The High Energy X-ray Probe (HEX-P): Galactic PeVatrons, star clusters, superbubbles, microquasar jets, and gamma-ray binaries
Kaya Mori, Stephen Reynolds, Hongjun An +32
HEX-P is a probe-class mission concept that will combine high spatial resolution X-ray imaging (<10" FWHM) and broad spectral coverage (0.2-80 keV) with an effective area far super…
Searching for dark matter subhalos in the Fermi-LAT catalog with Bayesian neural networks
Anja Butter, Michael Krämer, Silvia Manconi +1
About a third of the -ray sources detected by the Fermi Large Area Telescope (Fermi-LAT) remain unidentified, and some of these could be exotic objects such as dark matter subha…
A novel prediction for secondary positrons and electrons in the Galaxy
Mattia Di Mauro, Fiorenza Donato, Michael Korsmeier +2
The Galactic flux of cosmic-ray (CR) positrons in the GeV to TeV energy range is very likely due to different Galactic components. One of these is the inelastic scattering of CR nu…
Constraints on the positron emission from pulsar populations with AMS-02 data
Silvia Manconi
Electron and positron fluxes in cosmic rays are currently measured with unprecedented precision by AMS-02 up to TeV energies, and represent unique probes for the local properties o…
Dark Matter constraints from Planck observations of the Galactic polarized synchrotron emission
Silvia Manconi, Alessandro Cuoco, Julien Lesgourgues
Dark Matter (DM) annihilation in our Galaxy may produce a linearly polarized synchrotron signal. We use, for the first time, synchrotron polarization to constrain the DM annihilati…
Classification of Fermi-LAT blazars with Bayesian neural networks
Anja Butter, Thorben Finke, Felicitas Keil +2
The use of Bayesian neural networks is a novel approach for the classification of gamma-ray sources. We focus on the classification of Fermi-LAT blazar candidates, which can be div…
EuCAPT White Paper: Opportunities and Challenges for Theoretical Astroparticle Physics in the Next Decade
R. Alves Batista, M. A. Amin, G. Barenboim +134
Astroparticle physics is undergoing a profound transformation, due to a series of extraordinary new results, such as the discovery of high-energy cosmic neutrinos with IceCube, the…
Constraining dark matter annihilation with cosmic ray antiprotons using neural networks
Felix Kahlhoefer, Michael Korsmeier, Michael Krämer +2
The interpretation of data from indirect detection experiments searching for dark matter annihilations requires computationally expensive simulations of cosmic-ray propagation. In…
Constraining positron emission from pulsar populations with AMS-02 data
Luca Orusa, Silvia Manconi, Fiorenza Donato +1
The cosmic-ray flux of positrons is measured with high precision by the space-borne particle spectrometer AMS-02. The hypothesis that pulsar wind nebulae (PWNe) can significantly c…
Does the Geminga, Monogem and PSR J0622+3749 -ray halos imply slow diffusion around pulsars?
Sarah Recchia, Mattia Di Mauro, Felix A. Aharonian +4
The HAWC Collaboration has reported the detection of an extended -ray emission around the Geminga and Monogem pulsars of a few degree extension. Very recently, the LHAASO Collab…
Dissecting the inner Galaxy with -ray pixel count statistics
Francesca Calore, Fiorenza Donato, Silvia Manconi
We combine adaptive template fitting and pixel count statistics in order to assess the nature of the Galactic center excess in Fermi-LAT data. We reconstruct the flux distribution…
Investigating -ray halos around three HAWC bright sources in Fermi-LAT data
Mattia Di Mauro, Silvia Manconi, Michela Negro +1
Numerous extended sources around Galactic pulsars have shown significant -ray emission from GeV to TeV energies, revealing hundreds of TeV energy electrons scattering off of the…
Classification of Fermi-LAT sources with deep learning using energy and time spectra
Thorben Finke, Michael Krämer, Silvia Manconi
Despite the growing number of gamma-ray sources detected by Fermi-LAT, about one third of the sources in each survey remains of uncertain type. We present a new deep neural network…
Novel interpretation of the latest AMS-02 cosmic-ray electron spectrum
Mattia Di Mauro, Fiorenza Donato, Silvia Manconi
The latest AMS-02 data on cosmic ray electrons show a break in the energy spectrum around 40 GeV, with a change in the slope of about 0.1. We perform a combined fit to the newest A…
Contribution of pulsars to cosmic-ray positrons in light of recent observation of inverse-Compton halos
Silvia Manconi, Mattia Di Mauro, Fiorenza Donato
The hypothesis that pulsar wind nebulae (PWNe) can significantly contribute to the excess of the positron () cosmic-ray flux has been consolidated after the observation of a $…