output
19962026
most citedPlanck 2013 results. XVI. Cosmological parameters

6.6k citations

Showing 2022 · astro-ph.HEShow all

29 papers · 2 filters

astro-ph.HE2022★ 13 cited

Simultaneous Radio and Optical Polarimetry of GRB 191221B Afterglow

Yuji Urata, Kenji Toma, Stefano Covino +16

Gamma-ray bursts (GRBs) are the most luminous transients in the universe and are utilized as probes of early stars, gravitational wave counterparts, and collisionless shock physics…

astro-ph.HE2022★ 7 cited

Signature of Collapsars as Sources for High-energy Neutrinos and -process Nuclei

Gang Guo, Yong-Zhong Qian, Meng-Ru Wu

If collapsars are sources for both high-energy (HE) neutrinos and -process nuclei, the profuse low-energy antineutrinos from -decay of the newly-synthesized nuclei can annihi…

astro-ph.HE2022★ 10 cited

Modelling Annual Scintillation Velocity Variations of FRB 20201124A

R. A. Main, S. Bethapudi, V. R. Marthi +5

Compact radio sources exhibit scintillation, an interference pattern arising from propagation through inhomogeneous plasma, where scintillation patterns encode the relative distanc…

astro-ph.HE2022★ 10 cited

Detection of a bright burst from the repeating FRB 20201124A at 2 GHz

Sota Ikebe, Kazuhiro Takefuji, Toshio Terasawa +14

We present a detection of a bright burst from FRB 20201124A, which is one of the most active repeating FRBs, based on S-band observations with the 64-m radio telescope at the Usuda…

astro-ph.HE2022★ 17 cited

Flares in the changing look AGN Mrk 590. I: The UV response to X-ray outbursts suggests a more complex reprocessing geometry than a standard disk

Daniel Lawther, Marianne Vestergaard, Sandra Raimundo +5

Mrk 590 is a known changing-look AGN which almost turned off in 2012, and then in 2017 partially re-ignited into a repeat flaring state, unusual for an AGN. Our \emph{Swift} observ…

astro-ph.HE2022★ 21 cited

Resolving the Emission Regions of the Crab Pulsar's Giant Pulses II. Evidence for Relativistic Motion

Rebecca Lin, Marten H. van Kerkwijk, Robert Main +3

The Crab Pulsar is the prime example of an emitter of giant pulses. These short, very bright pulses are thought to originate near the light cylinder, at from…

astro-ph.HE2022★ 13 cited

Polarization Observations of AGN Jets: Past and Future

Jongho Park, Juan Carlos Algaba

The magnetic field is believed to play a critical role in the bulk acceleration and propagation of jets produced in active galactic nuclei (AGN). Polarization observations of AGN j…

astro-ph.HE2022★ 31 cited

Oxygen and iron in interstellar dust: an X-ray investigation

I. Psaradaki, E. Costantini, D. Rogantini +9

Understanding the chemistry of the interstellar medium (ISM) is fundamental for the comprehension of the Galactic and stellar evolution. X-rays provide an excellent way to study th…

astro-ph.HE2022★ 69 cited

Evolution of collisional neutrino flavor instabilities in spherically symmetric supernova models

Zewei Xiong, Meng-Ru Wu, Gabriel Martínez-Pinedo +4

We implement a multi-group and discrete-ordinate neutrino transport model in spherical symmetry which allows to simulate collective neutrino oscillations by including realistic col…

astro-ph.HE2022★ 32 cited

Multi-messenger characterization of Mrk 501 during historically low X-ray and -ray activity

MAGIC collaboration, H. Abe, S. Abe +322

We study the broadband emission of Mrk 501 using multi-wavelength observations from 2017 to 2020 performed with a multitude of instruments, involving, among others, MAGIC, Fermi-LA…

astro-ph.HE2022★ 8 cited

Two-dimensional Particle-in-Cell simulations of axisymmetric black hole magnetospheres: angular dependence of the Blandford-Znajek flux

Kouichi Hirotani, Hsien Shang, Ruben Krasnopolsky +1

We examine the temporary evolution of axisymmetric magnetospheres around rapidly rotating black holes (BHs), by applying our two-dimensional particle-in-cell simulation code. Assum…

astro-ph.HE2022★ 20 cited

Implications from the velocity profile of the M87 jet: a possibility of a slowly rotating black hole magnetosphere

Motoki Kino, Masaaki Takahashi, Tomohisa Kawashima +4

Motivated by the measured velocity profile of the M87 jet using the KVN and VERA Array (KaVA) by Park et al. indicating that the starting position of the jet acceleration is farthe…

astro-ph.HE2022★ 14 cited

An update on Fermi-LAT transients in the Galactic plane, including strong activity of Cygnus X-3 in mid-2020

Dmitry Prokhorov, Anthony Moraghan

We present a search for Galactic transient gamma-ray sources using 13 years of the Fermi Large Area Telescope data. The search is based on a recently developed variable-size slidin…

astro-ph.HE2022★ 4 cited

Resonant Production of Light Sterile Neutrinos in Compact Binary Merger Remnants

Garðar Sigurðarson, Irene Tamborra, Meng-Ru Wu

The existence of eV-mass sterile neutrinos is not ruled out because of persistent experimental anomalies. Upcoming multi-messenger detections of neutron-star merger remnants could…

astro-ph.HE2022★ 69 cited

The Photon Ring in M87*

Avery E. Broderick, Dominic W. Pesce, Paul Tiede +48

We report measurements of the gravitationally lensed secondary image -- the first in an infinite series of so-called "photon rings" -- around the supermassive black hole M87* via s…

astro-ph.HE2022★ 47 cited

Resolving the inner parsec of the blazar J1924-2914 with the Event Horizon Telescope

Sara Issaoun, Maciek Wielgus, Svetlana Jorstad +27

The blazar J1924-2914 is a primary Event Horizon Telescope (EHT) calibrator for the Galactic Center's black hole Sagittarius A*. Here we present the first total and linearly polari…

astro-ph.HE2022★ 11 cited

Plasma lensing near the eclipses of the Black Widow pulsar B1957+20

Fang Xi Lin, Robert Main, Dylan Jow +3

Recently, several eclipsing millisecond pulsars have been shown to experience strong and apparent weak lensing from the outflow of their ionized companions. Lensing can be a powerf…

astro-ph.HE2022★ 16 cited

Pulsar Double-lensing Sheds Light on the Origin of Extreme Scattering Events

Hengrui Zhu, Daniel Baker, Ue-Li Pen +2

In extreme scattering events, the brightness of a compact radio source drops significantly, as light is refracted out of the line of sight by foreground plasma lenses. Despite rece…

astro-ph.HE2022★ 112 cited

Millimeter light curves of Sagittarius A* observed during the 2017 Event Horizon Telescope campaign

Maciek Wielgus, Nicola Marchili, Ivan Marti-Vidal +28

The Event Horizon Telescope (EHT) observed the compact radio source, Sagittarius A* (Sgr A*), in the Galactic Center on 2017 April 5-11 in the 1.3 millimeter wavelength band. At th…

astro-ph.HE2022★ 19 cited

Formation of episodic jets and associated flares from black hole accretion systems

Miljenko Cemeljic, Hai Yang, Feng Yuan +1

Episodic ejections of blobs (episodic jets) are widely observed in black hole sources and usually associated with flares. In this paper, by performing and analyzing three dimension…

astro-ph.HE2022★ 64 cited

Code Comparison for Fast Flavor Instability Simulation

Sherwood Richers, Huaiyu Duan, Meng-Ru Wu +5

The fast flavor instability (FFI) is expected to be ubiquitous in core-collapse supernovae and neutron star mergers. It rapidly shuffles neutrino flavor in a way that could impact…

astro-ph.HE2022★ 29 cited

Unravelling the Innermost Jet Structure of OJ 287 with the First GMVA+ALMA Observations

Guang-Yao Zhao, Jose L. Gomez, Antonio Fuentes +33

We present the first very-long-baseline interferometric (VLBI) observations of the blazar OJ287 carried out jointly with the Global Millimeter VLBI Array (GMVA) and the phased Atac…

astro-ph.HE2022★ 26 cited

A High-Time Resolution Search for Compact Objects using Fast Radio Burst Gravitational Lens Interferometry with CHIME/FRB

Zarif Kader, Calvin Leung, Matt Dobbs +31

The gravitational field of compact objects, such as primordial black holes, can create multiple images of background sources. For transients such as fast radio bursts (FRBs), these…

astro-ph.HE2022★ 44 cited

Constraining Primordial Black Holes using Fast Radio Burst Gravitational-Lens Interferometry with CHIME/FRB

Calvin Leung, Zarif Kader, Kiyoshi W. Masui +30

Fast radio bursts (FRBs) represent an exciting frontier in the study of gravitational lensing, due to their brightness, extragalactic nature, and the compact, coherent characterist…