2015A&A...574A..63B


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.26CET03:30:01

2015A&A...574A..63B - Astronomy and Astrophysics, volume 574A, 63-63 (2015/2-1)

IGR J17480-2446: a new class of accreting binaries?

BONANNO A. and URPIN V.

Abstract (from CDS):

The recent discovery of long-period, low magnetic field pulsars in low-mass X-ray binaries (LMXBs) represents a challenge for the standard evolutionary scenario. These pulsars have a magnetic field strength comparable to that of millisecond pulsars (∼108-109G), but their period is at least an order of magnitude longer. We discuss the origin of this new class of pulsars within the standard picture of LMXBs formation and apply our results to the case of IGR J17480-2446. The magnetothermal evolution of the binary system is studied numerically by taking into account the effect of different accretion rates during the Roche-lobe overflow in the framework of the minimal cooling scenario. We show that, in addition to standard millisecond pulsars, long-period low magnetic field pulsars should also be expected as a possible outcome of the binary evolution, depending on the strength of the accretion rate during the Roche-lobe overflow. In particular, we argue that IGR J17480-2446 belongs to this new class of objects.

Abstract Copyright:

Journal keyword(s): stars: magnetic field - pulsars: individual: IGR J17480-2446 - X-rays: binaries - accretion, accretion disks - stars: neutron

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* HZ Her LXB 16 57 49.8110797681 +35 20 32.487435684 11.90 14.89 13.63 13.88   B3/6ep 1905 0
2 2EG J1746-2852 LXB 17 44 33.09 -28 44 27.0           ~ 479 0
3 IGR J17480-2446 LXB 17 48 04.831 -24 46 48.87           ~ 147 0
4 V* V691 CrA LXB 18 25 46.8186056396 -37 06 18.529015318 14.30 15.20 15.1     ~ 398 0

    Equat.    Gal    SGal    Ecl

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2020.02.26-03:30:01

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