Spectral characterization of the non-thermal X-ray emission of gamma-ray pulsars

Zelati, F. Coti; Torres, D. F.; Li, Jian; Viganò, Daniele

doi:10.1093/mnras/stz3485

Cited by 18 publications

(13 citation statements)

References 76 publications

(101 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…J0218 is part of a small but diverse population of MSPs with a well-characterized broad-band non-thermal energy distribution. Several of these MSPs have an 'inverted' spectrum in X-rays (where 𝐸 2 𝑑𝐹/𝑑𝐸 decreases with energy), quite different from that of J0218 as we have reported here, see Figure 3 of Coti Zelati et al (2020). We also note that the fitted magnetic gradient 𝑏 for J0218 and other MSPs within the synchro-curvature model (Torres 2018) is larger than for normal pulsars.…”

Section: Discussioncontrasting

confidence: 42%

Search for Very High-energy Emission from the Millisecond Pulsar PSR J0218+4232

Acciari

Ansoldi²,

Antonelli

et al. 2021

ApJ

Self Cite

View full text Add to dashboard Cite

PSR J0218+4232 is one of the most energetic millisecond pulsars known and has long been considered as one of the best candidates for very high-energy (VHE; >100 GeV) γ-ray emission. Using 11.5 yr of Fermi Large Area Telescope (LAT) data between 100 MeV and 870 GeV, and ∼90 hr of Major Atmospheric Gamma Imaging Cherenkov (MAGIC) observations in the 20 GeV to 20 TeV range, we searched for the highest energy γ-ray emission from PSR J0218+4232. Based on the analysis of the LAT data, we find evidence for pulsed emission above 25 GeV, but see no evidence for emission above 100 GeV (VHE) with MAGIC. We present the results of searches for γ-ray emission, along with theoretical modeling, to interpret the lack of VHE emission. We conclude that, based on the experimental observations and theoretical modeling, it will remain extremely challenging to detect VHE emission from PSR J0218+4232 with the current generation of Imaging Atmospheric Cherenkov Telescopes, and maybe even with future ones, such as the Cherenkov Telescope Array.

show abstract

Section: Discussioncontrasting

confidence: 42%

Search for Very High-energy Emission from the Millisecond Pulsar PSR J0218+4232

Acciari

Ansoldi²,

Antonelli

et al. 2021

ApJ

Self Cite

View full text Add to dashboard Cite

show abstract

“…In order to investigate this question, the characteristics of the 18 soft γ-ray pulsars were compared with those of the 77 non-recycled LAT-detected pulsars in the Second Fermi Pulsar Catalog . Surprisingly, it was found that the soft γ-ray pulsars are all fast rotators and on average ∼ 9.3 times younger and ∼ 43 times more energetic than the Fermi LAT sample (see also Coti Zelati et al 2020 for a recent assessment). The majority (11 sources) exhibits broad, structured single pulse profiles, and only six have double (or even multiple, Vela) pulses (see Fig.…”

Section: Psr J1846-0258 Showing Magnetar-like Behaviourmentioning

confidence: 99%

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

Papitto¹,

Falanga

Hermsen

et al. 2020

New Astronomy Reviews

View full text Add to dashboard Cite

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 millisecond pulsars proved that disk accretion can spin up a neutron star to a very high rotation speed. The detection of MeV-GeV pulsed emission from a few hundreds of rotation-powered pulsars probed particle acceleration in the outer magnetosphere, or even beyond. Also, a population of two dozens of magnetars has emerged. INTEGRAL played a central role to achieve these results by providing instruments with high temporal resolution up to the hard X-ray/soft γ-ray band and a large field of view imager with good angular resolution to spot hard X-ray transients. In this article, we review the main contributions by INTEGRAL to our understanding of the pulsating hard X-ray sky, such as the discovery and characterization of several accreting and transitional millisecond pulsars, the generation of the first catalog of hard X-ray/soft γ-ray rotation-powered pulsars, the detection of polarization in the hard X-ray emission from the Crab pulsar, and the discovery of persistent hard X-ray emission from several magnetars.

show abstract

“…Characterizing the non-thermal multi-wavelength spectrum of a large sample of MSPs (as done, for example, in [46,47] mostly for pulsars) would set population studies of MSP emission mechanisms on more solid grounds and improve our understanding of the γ-X connection. Dedicated analyses of archived X-ray observations and existing source catalogs is another path to refine the spectral selection of MSP candidates, distinguishing them from extragalactic objects and other Galactic sources as cataclysmic variables and intermediate polars.…”

Section: Introduction a Mysterious Excess Discovered Atmentioning

confidence: 99%

The Galactic bulge millisecond pulsars shining in X rays: A gamma-ray perspective

Berteaud,

Calore,

Clavel

et al. 2020

Preprint

View full text Add to dashboard Cite

Spectral characterization of the non-thermal X-ray emission of gamma-ray pulsars

Cited by 18 publications

References 76 publications

Search for Very High-energy Emission from the Millisecond Pulsar PSR J0218+4232

Search for Very High-energy Emission from the Millisecond Pulsar PSR J0218+4232

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

The Galactic bulge millisecond pulsars shining in X rays: A gamma-ray perspective

Contact Info

Product

Resources

About