A Temporal Analysis Indicates a Mildly Relativistic Compact Jet in GRS 1915+105

Punsly, Brian; Rodríguez, J.

doi:10.3847/0004-637x/823/1/54

Cited by 32 publications

(3 citation statements)

References 31 publications

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“…Separating the 4-hour long radio observations into 32 s time intervals showed the radio emission fading rapidly from ∼100 mJy and ∼70 mJy down to a few mJy in 2003 April and 2004 April, respectively. The decay of the radio emission was attributed to the turning off, or rapid reduction in power, of the jet emission, creating a discontinuity propagating outwards along the jet (Punsly & Rodriguez 2016). Such a scenario could result from the particle acceleration region rapidly shifting away from the central object, effectively switching off the compact jet emission in the same way our results suggest for MAXI J1535−571.…”

Section: Adiabatic and Radiative Cooling Timescalessupporting

confidence: 51%

“…On two separate occasions radio observations of the BH XRB GRS 1915+105 have shown a similarly rapid shutting off of the compact jet emission. Punsly & Rodriguez (2016) analysed radio observations of the two events, taken ∼1-year apart with the Ryle Telescope. During both of these 15 GHz radio observations the source was in its high plateau state, which is associated with the steady, compact jet.…”

Section: Adiabatic and Radiative Cooling Timescalesmentioning

confidence: 99%

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Rapid compact jet quenching in the Galactic black hole candidate X-ray binary MAXI J1535-571

Russell,

Lucchini,

Tetarenko

et al. 2020

Preprint

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We present results from six epochs of quasi-simultaneous radio, (sub-)millimetre, infrared, optical, and X-ray observations of the black hole X-ray binary MAXI J1535−571. These observations show that as the source transitioned through the hard-intermediate X-ray state towards the soft intermediate X-ray state, the jet underwent dramatic and rapid changes. We observed the frequency of the jet spectral break, which corresponds to the most compact region in the jet where particle acceleration begins (higher frequencies indicate closer to the black hole), evolve from the IR band into the radio band (decreasing by ≈3 orders of magnitude) in less than a day. During one observational epoch, we found evidence of the jet spectral break evolving in frequency through the radio band. Estimating the magnetic field and size of the particle acceleration region shows that the rapid fading of the high-energy jet emission was not consistent with radiative cooling; instead the particle acceleration region seems to be moving away from the black hole on approximately dynamical timescales. This result suggests that the compact jet quenching is not caused by local changes to the particle acceleration, rather we are observing the acceleration region of the jet travelling away from the black hole with the jet flow. Spectral analysis of the X-ray emission show a gradual softening in the few days before the dramatic jet changes, followed by a more rapid softening ∼1-2 days after the onset of the jet quenching.

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Section: Adiabatic and Radiative Cooling Timescalessupporting

confidence: 51%

Section: Adiabatic and Radiative Cooling Timescalesmentioning

confidence: 99%

Rapid compact jet quenching in the Galactic black hole candidate X-ray binary MAXI J1535-571

Russell,

Lucchini,

Tetarenko

et al. 2020

Preprint

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“…For GRS 1915+105, we used radio data from Rodriguez et al (1995), and parameter values from Mirabel & Rodríguez (1994), Fender (2001, 2003, ), Miller-Jones et al (2005, Punsly (2011), Reid et al (2014), Zdziarski (2014), Punsly & Rodriguez (2016), and references therein. For Cyg X-3, we used radio data from Koljonen et al (2010), and parameter values from Fender et al (1997) Zdziarski et al (2012Zdziarski et al ( , 2013Zdziarski et al ( , 2016, and references therein.…”

mentioning

confidence: 99%

Scale Invariant Jets: From Blazars to Microquasars

Liodakis

Pavlidou

Papadakis

et al. 2017

ApJ

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Black holes, anywhere in the stellar-mass to supermassive range, are often associated with relativistic jets. Models suggest that jet production may be a universal process common in all black hole systems regardless of their mass. Although in many cases observations support such hypotheses for microquasars and Seyfert galaxies, little is known regarding whether boosted blazar jets also comply with such universal scaling laws. We use uniquely rich multi-wavelength radio light curves from the F-GAMMA program and the most accurate Doppler factors available to date to probe blazar jets in their emission rest frame with unprecedented accuracy. We identify for the first time a strong correlation between the blazar intrinsic broadband radio luminosity and black hole mass, which extends over ∼9 orders of magnitude down to microquasar scales. Our results reveal the presence of a universal scaling law that bridges the observing and emission rest frames in beamed sources and allows us to effectively constrain jet models. They consequently provide an independent method for estimating the Doppler factor and for predicting expected radio luminosities of boosted jets operating in systems of intermediate or tens of solar mass black holes, which are immediately applicable to cases such as those recently observed by LIGO.

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An Introduction to Radio Astronomy

Burke

Graham‐Smith

Wilkinson

2019

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The data give for the coordinates of the region from which the disturbance comes, a right ascension of 18 hours and declination of −10 • .-Karl G. Jansky 1933 Jansky's discovery of radio emission from the Milky Way is now seen as the birth of the new science of radio astronomy. Most astronomers remained unaware of this momentous event for at least the next decade, and its full significance only became apparent with the major discoveries in the 1950s and 1960s of the 21 cm hydrogen line, the evolution of distant radio sources, quasars, pulsars, and the cosmic microwave background. Radio astronomy had revealed a previously unseen Universe and is now one of the prime observational tools available to astronomers. There are several fields of application in which it is especially, sometimes uniquely, useful, as follows. The cosmic microwave background (CMB) The early Universe is observable as a black body whose ∼ 2.7 K temperature has maximum emissivity at millimetre wavelengths. High energy processes in galaxies and quasars These emit intense radio waves from charged particles, usually electrons, moving at relativistic velocities. Cosmic magnetic fields These are revealed in radio sources and in interstellar space by the polarization of radio waves. Astrochemistry Molecular constituents of clouds in the Milky Way and in distant galaxies are observable by radio spectroscopy. Star and planet formation Condensations of atoms and molecules are mapped by millimetre-wave synthesis arrays. Kinetics of galaxies Radio spectroscopy, especially of the 21 cm hydrogen line, reveals the dynamic structure of galaxies. Neutron stars The timing and structure of pulses from pulsars opens a wide field of research, from condensed matter in neutron star interiors to the gravitational interactions of binary star systems. General relativity Pulsars, the most accurate clocks in the Universe, are used to measure the geometry of space-time. 3

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A Temporal Analysis Indicates a Mildly Relativistic Compact Jet in GRS 1915+105

Cited by 32 publications

References 31 publications

Rapid compact jet quenching in the Galactic black hole candidate X-ray binary MAXI J1535-571

Rapid compact jet quenching in the Galactic black hole candidate X-ray binary MAXI J1535-571

Scale Invariant Jets: From Blazars to Microquasars

An Introduction to Radio Astronomy

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