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Pulsar glitches offer an insight into the dynamics of superfluids in the high density interior of a neutron star. To model these phenomena, however, one needs to have an understanding of the dynamics of a turbulent array of superfluid…

High Energy Astrophysical Phenomena · Physics 2020-09-09 Brynmor Haskell , Danai Antonopoulou , Carlo Barenghi

The rapidly growing base of observational data for supernova explosions of massive stars demands theoretical explanations. Central of these is a self-consistent model for the physical mechanism that provides the energy to start and drive…

Astrophysics · Physics 2009-11-07 H. -Th. Janka , R. Buras , K. Kifonidis , T. Plewa , M. Rampp

It is believed that millisecond pulsars attain their fast spins by accreting matter and angular momentum from companion stars. Theoretical modelling of the accretion process suggests a spin-up line in the period-period derivative…

High Energy Astrophysical Phenomena · Physics 2022-08-03 Xiao-Jin Liu , Zhi-Qiang You , Xing-Jiang Zhu

A nascent neutron star resulting from stellar collapse is a prodigious source of neutrinos of all flavors. While the most basic features of this neutrino emission can be estimated from simple considerations, the detailed simulation of the…

Astrophysics · Physics 2008-11-26 Christian Y. Cardall

A systematic X-ray survey of the most energetic rotation-powered pulsars known, based on spin-down energy loss rate, $\dot E$ = $I\omega\dot\omega$, shows that all energetic pulsars with $\dot E > \dot E_{c} \approx 3.4 \times\ 10^{36}$ erg…

Astrophysics · Physics 2007-05-23 E. V. Gotthelf

The neutrino chirality-flip process under the conditions of the supernova core is investigated in detail with the plasma polarization effects in the photon propagator taken into account in a more complete form than in earlier publications.…

High Energy Physics - Phenomenology · Physics 2007-08-22 A. V. Kuznetsov , N. V. Mikheev

We study implications for the apparent alignment of the spin axes, proper-motions, and polarization vectors of the Crab and Vela pulsars. The spin axes are deduced from recent Chandra X-ray Observatory images that reveal jets and nebular…

Astrophysics · Physics 2009-10-31 Dong Lai , David F. Chernoff , James M. Cordes

Since the day of its explosion, SN 1987A (SN87A) was closely monitored with the aim to study its evolution and to detect its central compact relic. The detection of neutrinos from the supernova strongly supports the formation of a neutron…

High Energy Astrophysical Phenomena · Physics 2021-03-03 Emanuele Greco , Marco Miceli , Salvatore Orlando , Barbara Olmi , Fabrizio Bocchino , Shigehiro Nagataki , Masaomi Ono , Akira Dohi , Giovanni Peres

We study the synchrotron radiation as the observed non-thermal X-ray emission from old pulsars ($\gtrsim1-10$Myr) to investigate the particle acceleration in their magnetospheres. We assume that the power-law component of the observed X-ray…

High Energy Astrophysical Phenomena · Physics 2015-06-22 Shota Kisaka , Shuta J. Tanaka

The speeds of young isolated pulsars are generally inferred from their observed 2-d velocities on the plane of the sky under the assumption that the unobserved radial velocity is not special, i.e., that the measured 2-d velocity is an…

High Energy Astrophysical Phenomena · Physics 2023-03-06 Ilya Mandel , Andrei P. Igoshev

Massive stars (M> 10Msun) end their lives with spectacular explosions due to gravitational collapse. The collapse turns the stars into compact objects such as neutron stars and black holes with the ejection of cosmic rays and heavy…

High Energy Astrophysical Phenomena · Physics 2015-06-12 K. Sumiyoshi

We discuss the spin evolution of pulsars in the case where a superfluid component of the star is coupled to the observable crust on long, spindown timescales. The momentum transfer from the superfluid interior results in an apparent decay…

Astrophysics · Physics 2011-02-11 Armen Sedrakian , James M. Cordes

A pedagogical introduction to color superconductivity in the weak coupling limit is given. The focus is on the basic tools of thermal field theory necessary to compute observables of color superconductivity. The rich symmetry structure and…

Nuclear Theory · Physics 2010-09-01 Qun Wang

Context: The standard cooling models of neutron stars predict temperatures $T<10^{4}$ K for ages $t>10^{7}$ yr. However, the likely thermal emission detected from the millisecond pulsar J0437-4715, of spin-down age $t_s \sim 7\times10^9$…

High Energy Astrophysical Phenomena · Physics 2015-05-19 Denis Gonzalez , Andreas Reisenegger

Rapidly rotating and strongly magnetized protoneutron stars (PNSs) created in core-collapse supernovae can drive relativistic magnetized winds. Ions and neutrons can be co-accelerated while they remain coupled through elastic collisions. We…

High Energy Astrophysical Phenomena · Physics 2024-10-11 Jose Alonso Carpio , Nick Ekanger , Mukul Bhattacharya , Kohta Murase , Shunsaku Horiuchi

The linear response of a neutron spin-triplet superfluid onto external weak axial-vector field is studied for the case of $^{3}P_{2}$ pairing with a projection of the total angular momentum $m_{j}=0$. The problem is considered in the BCS…

Solar and Stellar Astrophysics · Physics 2014-11-20 L. B. Leinson

Observations of Type I X-ray bursts have long been taken as evidence that the sources are neutron stars. Black body models approximate the spectral data and imply a suddenly heated neutron star cooling over characteristic times of seconds…

Astrophysics · Physics 2009-10-31 Jean H. Swank

The interaction of neutrinos with ultralight scalar and vector dark matter backgrounds induce a modification of the neutrino dispersion relation. The effects of this modification are reviewed in the framework of asymmetric emission of…

High Energy Physics - Phenomenology · Physics 2024-01-11 Gaetano Lambiase , Tanmay Kumar Poddar

The supernova (SN) neutronization phase produces mainly electron ($\nu_e$) neutrinos, the oscillations of which must take place within a few mean-free-paths of their resonance surface located nearby their neutrinosphere. The…

Astrophysics · Physics 2009-11-13 Herman J. Mosquera Cuesta , Gaetano Lambiase

Shear-driven turbulence in the superfluid interior of a neutron star exerts a fluctuating torque on the rigid crust, causing the rotational phase to walk randomly. The phase fluctuation spectrum is calculated analytically for incompressible…

High Energy Astrophysical Phenomena · Physics 2015-06-17 Andrew Melatos , Bennett Link