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 2020 · astro-ph.HEShow all

17 papers · 2 filters

astro-ph.HE2020★ 21 cited

The X-ray bursts of XTE J1739-285: a NICER sample

Peter Bult, Diego Altamirano, Zaven Arzoumanian +10

In this work we report on observations with the Neutron Star Interior Composition Explorer of the known neutron star X-ray transient XTE J1739-285. We observed the source in 2020 F…

astro-ph.HE2020★ 12 cited

Evidence of a non-conservative mass transfer in the ultra-compact X-ray source XB 1916-053

R. Iaria, A. Sanna, T. Di Salvo +5

The dipping source XB 1916-053 is a compact binary system with an orbital period of 50 min harboring a neutron star. Using ten new {\it Chandra} observations and one {\it Swift/XRT…

astro-ph.HE2020★ 15 cited

The INTEGRAL view of the pulsating hard X-ray sky: from accreting and transitional millisecond pulsars to rotation-powered pulsars and magnetars

A. Papitto, M. Falanga, W. Hermsen +30

In the last 25 years, a new generation of X-ray satellites imparted a significant leap forward in our knowledge of X-ray pulsars. The discovery of accreting and transitional millis…

astro-ph.HE2020★ 13 cited

Understanding and improving the timing of PSR J0737-3039B

Aristeidis Noutsos, G. Desvignes, M. Kramer +11

The double pulsar (PSR J0737-3039A/B) provides some of the most stringent tests of general relativity (GR) and its alternatives. The success of this system in tests of GR is largel…

astro-ph.HE2020★ 21 cited

The new magnetar SGR J1830-0645 in outburst

F. Coti Zelati, A. Borghese, G. L. Israel +13

The detection of a short hard X-ray burst and an associated bright soft X-ray source by the Swift satellite in 2020 October heralded a new magnetar in outburst, SGR J1830-0645. Pul…

astro-ph.HE2020★ 98 cited

SNEWS 2.0: A Next-Generation SuperNova Early Warning System for Multi-messenger Astronomy

S. Al Kharusi, S. Y. BenZvi, J. S. Bobowski +68

The next core-collapse supernova in the Milky Way or its satellites will represent a once-in-a-generation opportunity to obtain detailed information about the explosion of a star a…

astro-ph.HE2020★ 8 cited

Investigating the mini and giant radio flare episodes of Cygnus X-3

E. Egron, A. Pellizzoni, S. Righini +16

The microquasar Cygnus X-3 underwent a giant radio flare in April 2017, reaching a maximum flux of Jy at 8.5 GHz. We present results from a long monitoring campaign car…

astro-ph.HE2020★ 14 cited

New high-frequency radio observations of the Cygnus Loop supernova remnant with the Italian radio telescopes

S. Loru, A. Pellizzoni, E. Egron +19

Supernova remnants (SNRs) represent a powerful laboratory to study the Cosmic-Ray acceleration processes at the shocks, and their relation to the properties of the circumstellar me…

astro-ph.HE2020★ 60 cited

NICER observations reveal that the X-ray transient MAXI J1348-630 is a Black Hole X-ray binary

L. Zhang, D. Altamirano, V. A. Cuneo +16

We studied the outburst evolution and timing properties of the recently discovered X-ray transient MAXI J1348-630 as observed with NICER. We produced the fundamental diagrams commo…

astro-ph.HE2020★ 19 cited

Giant pulses from J1823-3021A observed with the MeerKAT telescope

F. Abbate, M. Bailes, S. J. Buchner +11

The millisecond pulsar J1823-3021A is a very active giant pulse emitter in the globular cluster NGC 6624. New observations with the MeerKAT radio telescope have revealed 14350 gian…

astro-ph.HE2020★ 12 cited

Testing jet geometries and disk-jet coupling in the neutron star LMXB 4U 0614+091 with the internal shocks model

A. Marino, J. Malzac, M. Del Santo +8

Multi-wavelength spectral energy distributions of Low Mass X-ray Binaries in the hard state are determined by the emission from a jet, for frequencies up to mid-infrared, and emiss…

astro-ph.HE2020★ 14 cited

The SUrvey for Pulsars and Extragalactic Radio Bursts V: Recent Discoveries and Full Timing Solutions

R. Spiewak, C. Flynn, S. Johnston +10

The SUrvey for Pulsars and Extragalactic Radio Bursts ran from 2014 April to 2019 August, covering a large fraction of the southern hemisphere at mid- to high-galactic latitudes, a…

astro-ph.HE2020★ 66 cited

Simultaneous multi-telescope observations of FRB 121102

M. Caleb, B. W. Stappers, T. D. Abbott +29

We present 11 detections of FRB 121102 in ~3 hours of observations during its 'active' period on the 10th of September 2019. The detections were made using the newly deployed MeerT…

astro-ph.HE2020★ 67 cited

A very young radio-loud magnetar

P. Esposito, N. Rea, A. Borghese +20

The magnetar Swift ,J1818.0-1607 was discovered in March 2020 when Swift detected a 9 ms hard X-ray burst and a long-lived outburst. Prompt X-ray observations revealed a spin perio…

astro-ph.HE2020★ 13 cited

Timing of the accreting millisecond pulsar IGR J17591-2342: evidence of spin-down during accretion

A. Sanna, L. Burderi, K. C. Gendreau +8

We report on the phase-coherent timing analysis of the accreting millisecond X-ray pulsar IGR J17591-2342, using Neutron Star Interior Composition Explorer (NICER) data taken durin…

astro-ph.HE2020★ 23 cited

A broadband look of the Accreting Millisecond X-ray Pulsar SAX J1748.9-2021 using AstroSat and XMM-Newton

Rahul Sharma, Aru Beri, Andrea Sanna +1

SAX J1748.9-2021 is a transient accretion powered millisecond X-ray pulsar located in the Globular cluster NGC 6440. We report on the spectral and timing analysis of SAX J1748.9-20…

astro-ph.HE2020★ 35 cited

The High Time Resolution Universe Pulsar Survey -- XVI. Discovery and timing of 40 pulsars from the southern Galactic plane

A. D. Cameron, D. J. Champion, M. Bailes +23

We present the results of processing an additional 44% of the High Time Resolution Universe South Low Latitude (HTRU-S LowLat) pulsar survey, the most sensitive blind pulsar survey…