The Emission Physics of Millisecond Pulsars. (arXiv:2101.05751v1 [astro-ph.HE])

The Emission Physics of Millisecond Pulsars. (arXiv:2101.05751v1 [astro-ph.HE]) <a href="http://arxiv.org/find/astro-ph/1/au:+Harding_A/0/1/0/all/0/1">Alice K. Harding</a> Understanding the physics of rotation-powered millisecond pulsars (MSPs) presents a number of challenges compared to that of the non-recycled pulsar population. Even though their fast rotation rates can produce high spin-down power and accelerating electric fields, their relatively low surface magnetic fields make […]

James Webb Unfolds Sunshield

James Webb Unfolds Sunshield It’s almost time. Soon the James Webb Space Telescope will be on its way to the Sun/Earth L2 Lagrange point and will begin its at least 5-year science mission. Really, it’s going to happen. Despite several delays since the program began in 1996 and a budget that has exceeded the original […]

X-rays surrounding ‘Magnificent 7’ may be traces of sought-after particle

X-rays surrounding ‘Magnificent 7’ may be traces of sought-after particle A new study, led by a theoretical physicist at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab), suggests that never-before-observed particles called axions may be the source of unexplained, high-energy X-ray emissions surrounding a group of neutron stars. phys.org Go to Source

Ultra-slow-roll inflation with quantum diffusion. (arXiv:2101.05741v1 [astro-ph.CO])

Ultra-slow-roll inflation with quantum diffusion. (arXiv:2101.05741v1 [astro-ph.CO]) <a href="http://arxiv.org/find/astro-ph/1/au:+Pattison_C/0/1/0/all/0/1">Chris Pattison</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Vennin_V/0/1/0/all/0/1">Vincent Vennin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wands_D/0/1/0/all/0/1">David Wands</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Assadullahi_H/0/1/0/all/0/1">Hooshyar Assadullahi</a> We consider the effect of quantum diffusion on the dynamics of the inflaton during a period of ultra-slow-roll inflation. We extend the stochastic-$deltamathcal{N}$ formalism to the ultra-slow-roll regime and show how this system can be solved […]

Emergent Dark Energy, neutrinos and cosmological tensions. (arXiv:2007.02927v2 [astro-ph.CO] UPDATED)

Emergent Dark Energy, neutrinos and cosmological tensions. (arXiv:2007.02927v2 [astro-ph.CO] UPDATED) <a href="http://arxiv.org/find/astro-ph/1/au:+Yang_W/0/1/0/all/0/1">Weiqiang Yang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Valentino_E/0/1/0/all/0/1">Eleonora Di Valentino</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pan_S/0/1/0/all/0/1">Supriya Pan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mena_O/0/1/0/all/0/1">Olga Mena</a> The Phenomenologically Emergent Dark Energy model, a dark energy model with the same number of free parameters as the flat $Lambda$CDM, has been proposed as a working example of a minimal model […]

Radiative Mixing Layers: Insights from Turbulent Combustion. (arXiv:2008.12302v2 [astro-ph.GA] UPDATED)

Radiative Mixing Layers: Insights from Turbulent Combustion. (arXiv:2008.12302v2 [astro-ph.GA] UPDATED) <a href="http://arxiv.org/find/astro-ph/1/au:+Tan_B/0/1/0/all/0/1">Brent Tan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Oh_S/0/1/0/all/0/1">S. Peng Oh</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Gronke_M/0/1/0/all/0/1">Max Gronke</a> Radiative mixing layers arise wherever multiphase gas, shear, and radiative cooling are present. Simulations show that in steady state, thermal advection from the hot phase balances radiative cooling. However, many features are puzzling. For instance, […]

Dark Matter production from relativistic bubble walls. (arXiv:2101.05721v1 [hep-ph])

Dark Matter production from relativistic bubble walls. (arXiv:2101.05721v1 [hep-ph]) <a href="http://arxiv.org/find/hep-ph/1/au:+Azatov_A/0/1/0/all/0/1">Aleksandr Azatov</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Vanvlasselaer_M/0/1/0/all/0/1">Miguel Vanvlasselaer</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Yin_W/0/1/0/all/0/1">Wen Yin</a> In this paper we present a novel mechanism for producing the observed Dark Matter(DM) relic abundance during the First Order Phase Transition (FOPT) in the early universe. We show that the bubble expansion with ultra-relativistic velocities can […]

FORS-Up: Making the most versatile instrument in Paranal ready for 15 more years of operations. (arXiv:2012.09227v2 [astro-ph.IM] UPDATED)

FORS-Up: Making the most versatile instrument in Paranal ready for 15 more years of operations. (arXiv:2012.09227v2 [astro-ph.IM] UPDATED) <a href="http://arxiv.org/find/astro-ph/1/au:+Boffin_H/0/1/0/all/0/1">H. M. J. Boffin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Derie_F/0/1/0/all/0/1">F. Derie</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Manescau_A/0/1/0/all/0/1">A. Manescau</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Siebenmorgen_R/0/1/0/all/0/1">R. Siebenmorgen</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Baldini_V/0/1/0/all/0/1">V. Baldini</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Calderone_G/0/1/0/all/0/1">G. Calderone</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Cirami_R/0/1/0/all/0/1">R. Cirami</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Coretti_I/0/1/0/all/0/1">I. Coretti</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Marcantonio_P/0/1/0/all/0/1">P. Di Marcantonio</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kolsmanski_J/0/1/0/all/0/1">J. Kolsmanski</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lilley_P/0/1/0/all/0/1">P. Lilley</a>, <a […]

Large-scale peculiar velocity fields: Newtonian vs relativistic treatment. (arXiv:2003.01186v2 [gr-qc] CROSS LISTED)

Large-scale peculiar velocity fields: Newtonian vs relativistic treatment. (arXiv:2003.01186v2 [gr-qc] CROSS LISTED) <a href="http://arxiv.org/find/gr-qc/1/au:+Filippou_K/0/1/0/all/0/1">Konstantinos Filippou</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Tsagas_C/0/1/0/all/0/1">Christos G. Tsagas</a> We employ a perturbative analysis to study the evolution of large-scale peculiar velocity fields within the framework of Newtonian gravity and then compare our results to those of the corresponding relativistic treatment. In so doing, we […]

Detection of the atomic hydrogen (HI) absorption line and continuum emission from comet C/2020 F3 (NEOWISE) using GMRT. (arXiv:2101.05267v2 [astro-ph.EP] UPDATED)

Detection of the atomic hydrogen (HI) absorption line and continuum emission from comet C/2020 F3 (NEOWISE) using GMRT. (arXiv:2101.05267v2 [astro-ph.EP] UPDATED) <a href="http://arxiv.org/find/astro-ph/1/au:+Pal_S/0/1/0/all/0/1">Sabyasachi Pal</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Manna_A/0/1/0/all/0/1">Arijit Manna</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kale_R/0/1/0/all/0/1">Ruta Kale</a> Comets are the most primordial objects in our solar system which are made of icy bodies. Comets used to release gas and dust when it […]

Identification of a Local Sample of Gamma-Ray Bursts Consistent with a Magnetar Giant Flare Origin. (arXiv:2101.05144v2 [astro-ph.HE] UPDATED)

Identification of a Local Sample of Gamma-Ray Bursts Consistent with a Magnetar Giant Flare Origin. (arXiv:2101.05144v2 [astro-ph.HE] UPDATED) <a href="http://arxiv.org/find/astro-ph/1/au:+Burns_E/0/1/0/all/0/1">E. Burns</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Svinkin_D/0/1/0/all/0/1">D. Svinkin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hurley_K/0/1/0/all/0/1">K. Hurley</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wadiasingh_Z/0/1/0/all/0/1">Z. Wadiasingh</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Negro_M/0/1/0/all/0/1">M. Negro</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Younes_G/0/1/0/all/0/1">G. Younes</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hamburg_R/0/1/0/all/0/1">R. Hamburg</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ridnaia_A/0/1/0/all/0/1">A. Ridnaia</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Cook_D/0/1/0/all/0/1">D. Cook</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Cenko_S/0/1/0/all/0/1">S. B. Cenko</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Aloisi_R/0/1/0/all/0/1">R. Aloisi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ashton_G/0/1/0/all/0/1">G. Ashton</a>, […]

Determining the viewing angle of neutron star merger jets with VLBI radio images. (arXiv:2101.05138v2 [astro-ph.HE] UPDATED)

Determining the viewing angle of neutron star merger jets with VLBI radio images. (arXiv:2101.05138v2 [astro-ph.HE] UPDATED) <a href="http://arxiv.org/find/astro-ph/1/au:+Fernandez_J/0/1/0/all/0/1">Joseph John Fern&#xe1;ndez</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kobayashi_S/0/1/0/all/0/1">Shiho Kobayashi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lamb_G/0/1/0/all/0/1">Gavin P. Lamb</a> Very long base interferometry (VLBI) radio images recently proved to be essential in breaking the degeneracy in the ejecta model for the neutron star merger event GW170817. We […]

HESS J1858+020: A GeV-TeV source possibly powered by CRs from SNR G35.6-0.4. (arXiv:2101.04851v2 [astro-ph.HE] UPDATED)

HESS J1858+020: A GeV-TeV source possibly powered by CRs from SNR G35.6-0.4. (arXiv:2101.04851v2 [astro-ph.HE] UPDATED) <a href="http://arxiv.org/find/astro-ph/1/au:+Cui_Y/0/1/0/all/0/1">Y. Cui</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Xin_Y/0/1/0/all/0/1">Y. Xin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Liu_S/0/1/0/all/0/1">S. Liu</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Tam_P/0/1/0/all/0/1">P.H.T. Tam</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Puehlhofer_G/0/1/0/all/0/1">G. Puehlhofer</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zhu_H/0/1/0/all/0/1">H. Zhu</a> Context: The supernova remnant (SNR) G35.6-0.4 shows a non-thermal radio shell, however, no {gamma}-ray or X-ray counterparts have been found for it […]

Slaving and disabling actuators with voice-coil adaptive mirrors. (arXiv:2101.04801v2 [astro-ph.IM] UPDATED)

Slaving and disabling actuators with voice-coil adaptive mirrors. (arXiv:2101.04801v2 [astro-ph.IM] UPDATED) <a href="http://arxiv.org/find/astro-ph/1/au:+Riccardi_A/0/1/0/all/0/1">Armando Riccardi</a> Adaptive mirrors based on voice-coil technology have force actuators with an internal metrology to close a local loop for controlling its shape in position. When actuators are requested to be disabled or slaved, control matrices have to be re-computed. The report […]

Stromlo Stellar Tracks: non-solar scaled abundances for massive stars. (arXiv:2101.01197v2 [astro-ph.GA] UPDATED)

Stromlo Stellar Tracks: non-solar scaled abundances for massive stars. (arXiv:2101.01197v2 [astro-ph.GA] UPDATED) <a href="http://arxiv.org/find/astro-ph/1/au:+Grasha_K/0/1/0/all/0/1">K. Grasha</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kewley_L/0/1/0/all/0/1">L.J. Kewley</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Roy_A/0/1/0/all/0/1">A. Roy</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Sutherland_R/0/1/0/all/0/1">R.S. Sutherland</a> We present the Stromlo Stellar Tracks, a set of stellar evolutionary tracks, computed by modifying the Modules for Experiments in Stellar Astrophysics (MESA) 1D stellar evolution package, to fit the Galactic […]

Quantum string cosmology. (arXiv:2101.01070v2 [gr-qc] UPDATED)

Quantum string cosmology. (arXiv:2101.01070v2 [gr-qc] UPDATED) <a href="http://arxiv.org/find/gr-qc/1/au:+Gasperini_M/0/1/0/all/0/1">M. Gasperini</a> We present a short review of possible applications of the Wheeler-De Witt equation to cosmological models based on the low-energy string effective action, and characterised by an initial regime of asymptotically flat, low energy, weak coupling evolution. Considering in particular a class of duality-related (but classically […]

A tale of two mergers: constraints on kilonova detection in two short GRBs at z$sim$0.5. (arXiv:2012.00026v2 [astro-ph.HE] UPDATED)

A tale of two mergers: constraints on kilonova detection in two short GRBs at z$sim$0.5. (arXiv:2012.00026v2 [astro-ph.HE] UPDATED) <a href="http://arxiv.org/find/astro-ph/1/au:+OConnor_B/0/1/0/all/0/1">B. O&#x27;Connor</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Troja_E/0/1/0/all/0/1">E. Troja</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dichiara_S/0/1/0/all/0/1">S. Dichiara</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Chase_E/0/1/0/all/0/1">E. A. Chase</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ryan_G/0/1/0/all/0/1">G. Ryan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Cenko_S/0/1/0/all/0/1">S. B. Cenko</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fryer_C/0/1/0/all/0/1">C. L. Fryer</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ricci_R/0/1/0/all/0/1">R. Ricci</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Marshall_F/0/1/0/all/0/1">F. Marshall</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kouveliotou_C/0/1/0/all/0/1">C. Kouveliotou</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wollaeger_R/0/1/0/all/0/1">R. T. Wollaeger</a>, […]

Bursts before Burst: A Comparative Study on FRB 200428-associated and FRB-absent X-ray Bursts from SGR J1935+2154. (arXiv:2009.10342v2 [astro-ph.HE] UPDATED)

Bursts before Burst: A Comparative Study on FRB 200428-associated and FRB-absent X-ray Bursts from SGR J1935+2154. (arXiv:2009.10342v2 [astro-ph.HE] UPDATED) <a href="http://arxiv.org/find/astro-ph/1/au:+Yang_Y/0/1/0/all/0/1">Yu-Han Yang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zhang_B/0/1/0/all/0/1">Bin-Bin Zhang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lin_L/0/1/0/all/0/1">Lin Lin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zhang_B/0/1/0/all/0/1">Bing Zhang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zhang_G/0/1/0/all/0/1">Guo-Qiang Zhang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Yang_Y/0/1/0/all/0/1">Yi-Si Yang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Tu_Z/0/1/0/all/0/1">Zuo-Lin Tu</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zou_J/0/1/0/all/0/1">Jin-Hang Zou</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ye_H/0/1/0/all/0/1">Hao-Yang Ye</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wang_F/0/1/0/all/0/1">Fa-Yin Wang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dai_Z/0/1/0/all/0/1">Zi-Gao Dai</a> Accompanied by an […]