Newly Born Extragalactic Millisecond Pulsars as Efficient Emitters of PeV Neutrinos

Dey, Riya; Basak, Animesh; Ray, Sabyasachi; Sarkar, Tamal

doi:10.1007/s13538-021-00958-9

Cited by 4 publications

(4 citation statements)

References 56 publications

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“…Thus, a constant plasma density is a model of great interest, where photons behave as if they have an effective inertial mass. In fact, it has been suggested in the literature [81,82] that neutrinos from magnetosphere caps in the PeV regime could be detected by various neutrino detectors such as the Ice-Cube. Their dynamics can then be equivalently studied from the study of photons in a homogeneous plasma.…”

Section: Resultsmentioning

confidence: 99%

Analytical expressions for pulse profile of neutron stars in plasma environments

Briozzo

Gallo

2023

Eur. Phys. J. C

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We present an analytical study of light curves of slowly rotating radio pulsars with emphasis on the chromatic effects derived from the presence of a plasma environment; analyzing the effects of the compactness, the metric model, and the electronic plasma density profile. After doing a numerical integration of the trajectories and luminosity curves of pulsars for different spherically symmetric metrics representing the exterior region of the pulsar, we generalize the approximate Beloborodov formula in order to include plasma corrections, obtaining simple analytical expressions for the trajectories and the observed flux and significantly simplifying the calculation of the pulse profiles by a drastic reduction of their computational cost. We study the errors committed by our approximation, comparing the numerical and analytical procedures. We also show how to use the new formalism to model the flux coming from different emission caps, not necessarily circular or antipodal and including the case of ring-shaped hot spots. Finally, we extend the classification introduced by Beloborodov to the case of two distinguishable, non-antipodal, finite size emission caps, showing the respective classification maps and some of the characteristic pulse profiles.

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Section: Resultsmentioning

confidence: 99%

Analytical expressions for pulse profile of neutron stars in plasma environments

Briozzo

Gallo

2023

Eur. Phys. J. C

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“…Thus, a constant plasma density is a model of great interest, where photons behave as if they have an effective inertial mass. In fact, it has been suggested in the literature Dey et al (2016Dey et al ( , 2021 that neutrinos from magnetosphere caps in the PeV regime could be detected by various neutrino detectors such as the IceCube. Their dynamics can then be equivalently studied from the study of photons in a homogeneous plasma.…”

Section: Resultsmentioning

confidence: 99%

Analytical expressions for pulse profile of neutron stars in plasma environments

Briozzo¹,

Gallo²

2022

Preprint

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We present an analytical study of light curves of slowly rotating pulsars with emphasis on the chromatic effects derived from the presence of a plasma environment; analyzing the effects of the compactness and charge of the star, the metric model, and the electronic plasma density profile. After doing a numerical integration of the trajectories and luminosity curves of pulsars for different spherically symmetric metrics representing the exterior region of the pulsar, we generalize the approximate Beloborodov formula in order to include plasma corrections, obtaining simple analytical expressions for the trajectories and the observed flux and significantly simplifying the calculation of the pulse profiles by a drastic reduction of their computational cost. We study the errors committed by our approximation, comparing the numerical and analytical procedures. We also show how to use the new formalism to model the flux coming from different emission caps, not necessarily circular or antipodal and including the case of ring-shaped hot spots. Finally, we extend the classification introduced by Beloborodov to the case of two distinguishable, non-antipodal, finite size emission caps, showing the respective classification maps and some of the characteristic pulse profiles.

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“…One such source includes pulsars, which are rapidly rotating neutron stars which emit pulsed radio emission [21]. Pulsars have large magnetic (∼ 10 14 G) and induced electric fields, and because of their large rotational kinetic energy have long been considered as promising sources of TeV (and higher energy) neutrinos, which could be detected in IceCube and other km 2 detectors [22][23][24][25][26]. We briefly recap some of the literature on this.…”

Section: Introductionmentioning

confidence: 99%

“…However, it was pointed out that if one takes into account the polar cap geometry in the model proposed in [23], the event rates are much more pessimistic [31]. Models for neutrino emission at PeV energies from young millisecond pulsars from lepton-lepton and lepton-hadron interactions have also been proposed [26]. Similarly, there are also models for neutrino emission from fast-spinning newly born extra-galactic pulsars in the 0.1-1 EeV energy range [32].…”

Section: Introductionmentioning

confidence: 99%

A stacked search for spatial coincidences between IceCube neutrinos and radio pulsars

Pasumarti,

Desai

2024

J. Cosmol. Astropart. Phys.

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We carry out a stacked search for spatial coincidences between all the known radio pulsars and TeV neutrinos from the IceCube 10 year (2008–2018) muon track data, as a followup to our previous work on searching for spatial coincidences with individual pulsars. We consider three different weighting schemes to stack the contributions from each pulsar. We do not find a statistically significant excess using this method. We report the 95% c.l. neutrino flux upper limit as a function of the neutrino energy. We have also made our analysis codes publicly available.

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Newly Born Extragalactic Millisecond Pulsars as Efficient Emitters of PeV Neutrinos

Cited by 4 publications

References 56 publications

Analytical expressions for pulse profile of neutron stars in plasma environments

Analytical expressions for pulse profile of neutron stars in plasma environments

Analytical expressions for pulse profile of neutron stars in plasma environments

A stacked search for spatial coincidences between IceCube neutrinos and radio pulsars

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