output
19922026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations

Showing 2021 · astro-ph.HEShow all

13 papers · 2 filters

astro-ph.HE2021★ 263 cited

Strong-field Gravity Tests with the Double Pulsar

M. Kramer, I. H. Stairs, R. N. Manchester +27

Continued observations of the Double Pulsar, PSR J0737-3039A/B, consisting of two radio pulsars (A and B) that orbit each other with a period of 2.45hr in a mildly eccentric (e=0.0…

astro-ph.HE2021★ 36 cited

Collimation of the relativistic jet in the quasar 3C 273

Hiroki Okino, Kazunori Akiyama, Keiichi Asada +32

The collimation of relativistic jets launched from the vicinity of supermassive black holes (SMBHs) at the centers of active galactic nuclei (AGN) is one of the key questions to un…

astro-ph.HE2021★ 282 cited

Common-red-signal analysis with 24-yr high-precision timing of the European Pulsar Timing Array: Inferences in the stochastic gravitational-wave background search

S. Chen, R. N. Caballero, Y. J. Guo +49

We present results from the search for a stochastic gravitational-wave background (GWB) as predicted by the theory of General Relativity using six radio millisecond pulsars from th…

astro-ph.HE2021★ 15 cited

Spectral analysis of the low-mass X-ray pulsar 4U 1822-371: Reflection component in a high-inclination system

A. Anitra, T. Di Salvo, R. Iaria +6

The X-ray source 4U 1822-371 is an eclipsing low-mass X-ray binary and X-ray pulsar, hosting a NS that shows periodic pulsations in the X-ray band. The inclination angle of the sys…

astro-ph.HE2021★ 8 cited

Fe K and Fe K line detection in the NuSTAR spectrum of the ultra-bright Z-source Scorpius X-1

S. M. Mazzola, R. Iaria, T. Di Salvo +8

Low-mass X-ray binaries hosting a low-magnetised neutron star, which accretes matter via Roche-lobe overflow, are generally grouped in two classes, named Atoll and Z sources after…

astro-ph.HE2021★ 61 cited

The Fast Radio Burst FRB 20201124A in a star forming region: constraints to the progenitor and multiwavelength counterparts

L. Piro, G. Bruni, E. Troja +16

We present the results of a multiwavelength campaign of FRB 20201124A, the third closest repeating fast radio burst recently localized in a nearby (z=0.0978) galaxy. Deep VLA obser…

astro-ph.HE2021★ 36 cited

An analysis of the time-frequency structure of several bursts from FRB121102 detected with MeerKAT

E. Platts, M. Caleb, B. W. Stappers +11

We present a detailed study of the complex time-frequency structure of a sample of previously reported bursts of FRB 121102 detected with the MeerKAT telescope in September 2019. T…

astro-ph.HE2021★ 5 cited

The Location of Young Pulsar PSR J08372454: Galactic Halo or Local Supernova Remnant?

Nihan Pol, Sarah Burke-Spolaor, Natasha Hurley-Walker +8

We present the discovery and timing of the young (age kyr) pulsar PSR J08372454. Based on its high latitude () and dispersion measure (DM ~p…

astro-ph.HE2021★ 24 cited

The X-ray evolution and geometry of the 2018 outburst of XTE J1810-197

A. Borghese, N. Rea, R. Turolla +17

After 15 years, in late 2018, the magnetar XTE J1810-197 underwent a second recorded X-ray outburst event and reactivated as a radio pulsar. We initiated an X-ray monitoring campai…

astro-ph.HE2021★ 8 cited

Evidence of intra-binary shock emission from the redback pulsar PSR J1048+2339

A. Miraval Zanon, P. D'Avanzo, A. Ridolfi +16

We present simultaneous multiwavelength observations of the 4.66 ms redback pulsar PSR J1048+2339. We performed phase-resolved spectroscopy with the Very Large Telescope (VLT) sear…

astro-ph.HE2021★ 38 cited

Multi-frequency observations of SGR J1935+2154

M. Bailes, C. G. Bassa, G. Bernardi +54

Magnetars are a promising candidate for the origin of Fast Radio Bursts (FRBs). The detection of an extremely luminous radio burst from the Galactic magnetar SGR J1935+2154 on 2020…

astro-ph.HE2021★ 91 cited

Eight new millisecond pulsars from the first MeerKAT globular cluster census

A. Ridolfi, T. Gautam, P. C. C. Freire +24

We have used the central 44 antennas of the new 64-dish MeerKAT radio telescope array to conduct a deep search for new pulsars in the core of nine globular clusters. This has led t…

astro-ph.HE2021★ 49 cited

The Relativistic Binary Programme on MeerKAT: Science objectives and first results

M. Kramer, I. H. Stairs, V. Venkatraman Krishnan +35

We describe the ongoing Relativistic Binary programme (RelBin), a part of the MeerTime large survey project with the MeerKAT radio telescope. RelBin is primarily focused on observa…